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Kubota M105S Workshop Manual

Kubota M105S Workshop Manual

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Operator's manual (124 pages)

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WORKSHOP MANUAL

TRACTOR

M105S

KiSC issued 03, 2007 A

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Jim Hall

April 26, 2025

no brakes. work when i fill with oil but loose oil from brake reservoir in about a month

0

1 comments:

Mr. Anderson

May 14, 2025

Brake failure on a Kubota M105S after losing oil from the brake reservoir could be caused by the following:

1. Low Brake Oil Level: When the brake oil drops below the required level, the warning lamp turns on. If not corrected, this can lead to brake malfunction.
2. Oil Leak: A leak in the brake system can lead to a loss of brake oil, reducing hydraulic pressure and causing brake failure.
3. Incorrect Brake Oil: Using the wrong type of brake oil (e.g., automobile brake fluid instead of specified mineral oil) can damage rubber components like cylinder cups and seals, leading to malfunction.
4. Moisture Contamination: Moisture entering the brake system lowers the boiling point of the oil, increasing the risk of vapor lock and brake failure.

Always use the specified mineral oil and check for leaks or contamination to prevent brake failure.

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0

Blake Biswell

April 11, 2025

How much refrigerant do I need in my 105s

0

1 comments:

Mr. Anderson

April 11, 2025

The Kubota M105S requires 0.95 to 1.05 kg (2.09 to 2.31 lbs) of R134a refrigerant.

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JeanNoel Beaudry

March 9, 2025

how to get accest to the hydraulic pump on a m105s kubota

0

1 comments:

Mr. Anderson

March 9, 2025

To access the hydraulic pump on a Kubota M105S, follow these steps:

1. Remove the floor mat and the inspection plate under the mat.
2. Remove the seat and the floor cover.
3. Disconnect the delivery pipes.

These steps will allow access to the hydraulic pump for maintenance or replacement.

This answer is automatically generated

-1

JeanNoel Beaudry

March 8, 2025

how to get to the hydraulic pump

0

1 comments:

Mr. Anderson

March 8, 2025

To access the hydraulic pump on a Kubota M105S, follow these steps:

1. Remove the floor mat and the inspection plate under the mat.
2. Remove the seat and the floor cover.
3. Disconnect the delivery pipe 1 and delivery pipe 2.

These steps will provide access to the hydraulic pump for power steering and the three-point hitch.

This answer is automatically generated

0

Carlo Jr. Sciara

April 9, 2025

Remove valve cover on M105S kubota tractor

0

Carlo

April 9, 2025

What is the page number where valve cover gasket is removed

0

Summary of Contents for Kubota M105S

Page 1 WORKSHOP MANUAL TRACTOR M105S KiSC issued 03, 2007 A...
Page 2 TO THE READER This Workshop Manual has been prepared to provide servicing personnel with information on the mechanism, service and maintenance of M105S. It is divided into three parts, “General", “Mechanism” and “Servicing”. General Information on the tractor identification, the general precautions, maintenance check list, check and maintenance and special tools are described.
Page 3 M105S, WSM SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS SAFETY FIRST This symbol, the industry’s “Safety Alert Symbol”, is used throughout this manual and on labels on the machine itself to warn of the possibility of personal injury. Read these instructions carefully. It is essential that you read the instructions and safety regulations before you attempt to repair or use this unit.
Page 4 M105S, WSM SAFETY INSTRUCTIONS SAFETY STARTING • Do not start the engine by shorting across starter terminals or bypassing the safety start switch. • Do not alter or remove any part of machine safety system. • Before starting the engine, make sure that all shift levers are in neutral positions or in disengaged positions.
Page 5 M105S, WSM SAFETY INSTRUCTIONS VENTILATE WORK AREA • If the engine must be running to do some work, make sure the area is well ventilated. Never run the engine in a closed area. The exhaust gas contains poisonous carbon monoxide.
Page 6: Safety Decals
M105S, WSM SAFETY INSTRUCTIONS SAFETY DECALS The following safety decals are installed on the machine. If a decal becomes damaged, illegible or is not on the machine, replace it. The decal part number is listed in the parts list. KiSC issued 03, 2007 A...
Page 7 M105S, WSM SAFETY INSTRUCTIONS KiSC issued 03, 2007 A...
Page 8 M105S, WSM SAFETY INSTRUCTIONS KiSC issued 03, 2007 A...
Page 9 M105S, WSM SAFETY INSTRUCTIONS KiSC issued 03, 2007 A...
Page 10: Specifications
M105S, WSM SPECIFICATIONS SPECIFICATIONS M105S Model Model V3800-DI-TI Type Vertical, water-cooled, 4-cycle diesel engine No. of cylinder Total displacement 3769 cm (230.0 cu.in.) 100 × 120 mm (3.9 x 4.7 in.) Bore and stroke −1 Net power 78.3 kW (105 HP)* / 2600 min...
Page 11: Traveling Speeds
M105S, WSM TRAVELING SPEEDS TRAVELING SPEEDS (At rated engine rpm) Model M105S Tire size (Rear) 460 / 85R34 (18.4R34) Dual Speed : Hi Dual Speed : Lo Shuttle shift Range gear shift Main gear shift lever lever lever km/h (mph) km/h (mph) 0.36 (0.22)
Page 12 M105S, WSM TRAVELING SPEEDS (At rated engine rpm) Model M105S Tire size (Rear) 460 / 85R34 (18.4R34) Dual Speed : Hi Dual Speed : Lo Shuttle shift Range gear shift Main gear shift lever lever lever km/h (mph) km/h (mph) 0.36 (0.22)
Page 13 M105S, WSM DIMENSIONS DIMENSIONS KiSC issued 03, 2007 A...
Page 14 GENERAL KiSC issued 03, 2007 A...
Page 15: Table Of Contents
GENERAL CONTENTS 1. TRACTOR IDENTIFICATION ................. G-1 2. GENERAL PRECAUTIONS ................G-2 3. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING .. G-3 [1] WIRING...................... G-3 [2] BATTERY....................G-5 [3] FUSE......................G-5 [4] CONNECTOR .................... G-6 [5] HANDLING OF CIRCUIT TESTER............G-7 4.
Page 16: Tractor Identification
M105S, WSM G GENERAL 1. TRACTOR IDENTIFICATION When contacting your local KUBOTA distributor, always specify engine serial number, tractor serial number and hour meter reading. (1) Tractor Identification Plate (3) CABIN Identification Plate (2) Tractor Serial Number (CABIN Serial Number)
Page 17: General Precautions
Screws, bolts and nuts should be installed in their original position to prevent reassembly errors. • When special tools are required, use KUBOTA genuine special tools. Special tools which are not frequently used should be made according to the drawings provided.
Page 18: Handling Precautions For Electrical Parts And Wiring
M105S, WSM G GENERAL 3. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING To ensure safety and prevent damage to the machine and surrounding equipment, heed the following precautions in handling electrical parts and wiring. IMPORTANT • Check electrical wiring damage loosened connection every year.
Page 19 M105S, WSM G GENERAL • Securely insert grommet. (1) Grommet (A) Correct (B) Incorrect W1011388 • Securely clamp, being careful not to damage wiring. (1) Clamp (3) Clamp • Wind Clamp Spirally (4) Welding Dent (2) Wire Harness W1011458 • Clamp wiring so that there is no twist, unnecessary sag, or excessive tension, except for movable part, where sag be required.
Page 20: Battery
M105S, WSM G GENERAL • After installing wiring, check protection of terminals and clamped condition of wiring, only connect battery. (1) Cover • Securely Install Cover W1011735 [2] BATTERY • Take care not to confuse positive and negative terminal posts.
Page 21: Connector
M105S, WSM G GENERAL [4] CONNECTOR • For connector with lock, push lock to separate. (A) Push W1012211 • In separating connectors, do not pull wire harnesses. • Hold connector bodies to separate. (A) Correct (B) Incorrect W1012272 • Use sandpaper to remove rust from terminals.
Page 22: Handling Of Circuit Tester
M105S, WSM G GENERAL • Make certain plastic cover is large enough to cover whole connector. (1) Cover (A) Correct (B) Incorrect W1012519 [5] HANDLING OF CIRCUIT TESTER • Use tester correctly following manual provided with tester. • Check for polarity and range.
Page 23: Lubricants, Fuel And Coolant
UDT fluid or SAE80, 90 gear oil 3.5 L Front axle gear case oil 3.7 U.S.qts 3.1 lmp.qts KUBOTA UDT or SUPER UDT fluid* or Turbine oil 32 (see below) [regular type, multipurpose straight 0.3 L mineral oil Brake system 0.32 U.S.qts...
Page 24 • Transmission Oil : The oil used to lubricate the transmission is also used as hydraulic fluid. To insure proper operation of the hydraulic system and complete lubrication of the transmission, it is important that a multi-grade transmission fluid be used in this system. We recommend the use of KUBOTA SUPER UDT fluid for optimum protection and performance.
Page 25: Tightening Torques
M105S, WSM G GENERAL 5. TIGHTENING TORQUES [1] GENERAL USE SCREWS, BOLT AND NUTS Screws, bolt and nuts whose tightening torque are not specified in this Workshop Manual should be tightened according to the table below. Indication on top of...
Page 26: Hydraulic Fittings
M105S, WSM G GENERAL [3] HYDRAULIC FITTINGS Hydraulic Hose Fittings Tightening torque Hose size Thread size N·m kgf·m ft-lbs 13.7 to 15.7 1.4 to 1.6 10.1 to 11.6 22.6 to 27.5 2.3 to 2.8 16.6 to 20.3 45.1 to 53.0 4.6 to 5.4...
Page 27: Maintenance
M105S, WSM G GENERAL 6. MAINTENANCE Period Indication on hour meter Refer- Since then Impor ence every -tant 100 150 200 250 300 350 400 450 500 550 600 Item page Check G-18 Engine start system 50 hrs Wheel bolt torque...
Page 28 M105S, WSM G GENERAL Period Indication on hour meter Refer- Since then Impor ence every -tant 100 150 200 250 300 350 400 450 500 550 600 Item page 30 Master cylinder kit Replace 2 years 5-S11 Replace 31 Equalizer kit...
Page 29: Check And Maintenance
M105S, WSM G GENERAL 7. CHECK AND MAINTENANCE CAUTION • Be sure to check and service the tractor on a flat place with engine shut off, the parking brake on and chock the wheels. [1] DAILY CHECK To prevent trouble from occurring, it is important to know the condition of the tractor. Check the following items before starting.
Page 30: Check Point Of Initial 50 Hours
M105S, WSM G GENERAL [2] CHECK POINTS OF INITIAL 50 HOURS Changing Engine Oil CAUTION • Before changing oil, be sure to stop the engine. • Allow engine to cool down sufficiently, oil can be hot and can burn. 1. To drain the used oil, remove the drain plugs (1) at the bottom of the engine and drain the oil completely into the oil pan.
Page 31 2. After draining reinstall the drain plug. 3. Fill with the new KUBOTA SUPER UDT fluid up to the upper notch on the dipstick (2). Refer to “LUBRICANTS, FUEL AND COOLANT”. (See page G-8.)
Page 32 Top up if necessary. IMPORTANT • To prevent serious damage to the hydraulic system, use only a KUBOTA genuine filter. (1) Hydraulic Oil Filter (A) Oil level is acceptable within the (2) Magnetic Filter range.
Page 33: Check Points Of Every 50 Hours
M105S, WSM G GENERAL Changing Front Axle Gear Case Oil 1. To drain the used oil, remove the right and left drain plugs (2) and filling plugs (1) at the front axle gear case and drain the oil completely into the oil pan.
Page 34: Check Points Of Every 100 Hours
M105S, WSM G GENERAL Checking Wheel Mounting Nuts Tightening Torque CAUTION • Never operate tractor with a loose rim, wheel, or axle. • Any time bolts and nuts are loosened, retighten to specified torque. • Check all bolts and nuts frequently and keep them tight.
Page 35 M105S, WSM G GENERAL Directions for Storage CAUTION • When connecting the battery, do not reverse the polarities. Connection with reverse polarities will cause spark and troubles to the battery and electrical system in the tractor. • When disconnecting the cable from the battery, start with the negative terminal first.
Page 36 M105S, WSM G GENERAL Checking Fuel Line 1. Check to see that all lines and hose clamps are tight and not damaged. 2. If hoses and clamps are found worn or damaged, replace or repair them at once. NOTE • If the fuel line is removed, be sure to properly bleed the fuel system.
Page 37 M105S, WSM G GENERAL 2) Brake Pedal Stroke and Difference between Right and Left Pedal Strokes CAUTION • When checking, park the tractor on flat ground, and stop the engine. 1. Disengage the brake pedal lock. 2. Step on either side brake pedal and measure the level difference (pedal stroke) between right and left pedals.
Page 38 M105S, WSM G GENERAL Adjusting Parking Brake Lever Free Play 1. Release the parking brake lever. 2. Pull the parking brake lever with a force of 30 kg (66.2 lbs) for checking the free play and check the number of notches (A).
Page 39 M105S, WSM G GENERAL Lubricating Grease Fittings 1. Apply a small amount of multipurpose grease to following points: 2. If you operated the machine in extremely wet and muddy condition, lubricate grease fittings more often. (1) Grease Fitting (Front Axle Support)
Page 40: Check Points Of Every 200 Hours
M105S, WSM G GENERAL [5] CHECK POINTS OF EVERY 200 HOURS Changing Hydraulic Oil Filter 1. See page G-17. W1046442 Checking Radiator Hose and Hose Clamp Check to see if radiator hoses are properly fixed every 200 hours of operation or six months, whichever comes first.
Page 41 M105S, WSM G GENERAL Draining Fuel Tank Water 1. Remove the drain cover (2) at the bottom of right side fuel tank (1) to left sediments, impurities and water out of the tank. 2. Finally attach the drain cover (2) on the fuel tank (1).
Page 42 M105S, WSM G GENERAL Cleaning Inner Air Filter 1. Remove the inner air filter, and blow air the direction opposite to the filter's normal air flow. Pressure of compressed air must be under 205 kPa (2.1 kgf/cm , 30 psi).
Page 43 M105S, WSM G GENERAL Cleaning Fresh Air Filter 1. Remove the knob bolts (3) and pull out filter (1). NOTE • Do not hit the filter. If the filter becomes deformed, dust may enter into the air-conditioner, which may cause damage and malfunction.
Page 44: Check Points Of Every 300 Hours
M105S, WSM G GENERAL Sliding Air Conditioner Condenser CAUTION • The condenser and receiver become hot while the air conditioner is running. Before checking or cleaning them, wait long enough until they cool down. 1. Release the air conditioner hoses off the hook.
Page 45: Check Points Of Every 400 Hours
M105S, WSM G GENERAL [7] CHECK POINTS OF EVERY 400 HOURS Cleaning Water Separator 1. Close the fuel cock (1). 2. Unscrew the retainer ring (2) and remove the cup (3), and rinse the inside with kerosene. 3. Take out the element and dip it in the kerosene to rinse.
Page 46 M105S, WSM G GENERAL Changing Brake Oil CAUTION • Be sure to check and service the tractor on a flat place with engine shut off and applying the parking brake on. IMPORTANT • Be sure to use the recommended brake oil. (See page G-8.) •...
Page 47 M105S, WSM G GENERAL Adjusting King-pin Pivot 1. Jack up the tractor, then loosen the lock nut (2). 2. Measure the adjusting screw tightening torque. 3. If tightening torque is not within the factory specifications, adjust the adjusting screw (1).
Page 48: Check Points Of Every 800 Hours
M105S, WSM G GENERAL [9] CHECK POINT OF EVERY 800 HOURS Adjusting Engine Valve Clearance 1. See page 1-S13. W1052150 [10] CHECK POINT OF EVERY 1 YEAR Replacing Air Cleaner Primary and Secondary Element 1. Refer to "Cleaning Air Cleaner Element"...
Page 49: Check Points Of Every 2 Years
M105S, WSM G GENERAL [11] CHECK POINTS OF EVERY 2 YEARS Flush Cooling System and Changing Coolant CAUTION • Do not remove the radiator cap when the engine is hot. Then loosen cap slightly to the stop to relieve any excess pressure before removing cap completely.
Page 50 M105S, WSM G GENERAL Flush Cooling System and Changing Coolant (Continued) Anti-Freeze CAUTION • When using antifreeze, put on some protection such as rubber gloves (Antifreeze contains position). • If should drink antifreeze, throw up at once and take medical attention.
Page 51 The LLC contains anticorrosive agent. If mixed with the cleaning agent, sludge may build up, adversely affecting the engine parts. 7. Kubota's genuine long-life coolant has a service life of 2 years. Be sure to change the coolant every 2 years. NOTE •...
Page 52 M105S, WSM G GENERAL Replacing Brake Hose 1. Replace the brake hoses (1). 2. After replacing the hoses, bleed an air from brake system. (See page G-39.) (1) Brake Hose W1054709 Replacing Parking Brake Cable 1. Replace the parking brake cable (3).
Page 53: Others
M105S, WSM G GENERAL [12] OTHERS Bleeding Fuel System Air must be removed: 1. When the fuel filter or lines are removed. 2. When water is drained from water separator. 3. When tank is completely empty. 4. After the tractor has not been used for a long period of time.
Page 54 M105S, WSM G GENERAL Bleeding Brake System NOTE • While bleeding, make sure to keep enough brake oil in the brake oil reservoir. 1. Disconnect the brake pipes (1) from the master cylinder. 2. Move the brake pedal up and down by hand. At this time, when raising the pedal, close the master cylinder outlet by a finger, and when lowering, release the finger.
Page 55 M105S, WSM G GENERAL Lubricating Points Cabin 1. Apply oil to the door hinges (1) and the rear window hinges (2). (1) Door Hinge (2) Rear Window Hinge W1056309 Adding Washer Liquid 1. Add a proper amount of automobile washer liquid when it is necessary.
Page 56 M105S, WSM G GENERAL Replacing Fuse 1. The tractor electrical system is protected from potential damage by fuses. A blown fuse indicates that there is an overload or short somewhere in the electrical system. 2. If any of the fuses should blow, replace with a new one of the same capacity.
Page 57 M105S, WSM G GENERAL Checking the Amount of Refrigerant (Gas) 1. A shortage of refrigerant impairs the air conditioner performance. Check the following points. If it is indicated that the amount of refrigerant is extremely low. Do to inspect and charge.
Page 58: Special Tools
M105S, WSM G GENERAL 8. SPECIAL TOOLS [1] SPECIAL TOOLS FOR ENGINE Special Use Puller Set Code No.: 07916-09032 Application: Use exclusively for pulling out bearing, gears and other parts with ease. W10240500 Piston Ring Compressor Code No.: 07909-32111 Application: Use exclusively for pushing in the piston with piston rings into the cylinder.
Page 59 M105S, WSM G GENERAL Oil Pressure Tester Code No.: 07916-32032 Application: Use to measure lubricating oil pressure. (1) Gauge (5) Adaptor 2 (2) Cable (6) Adaptor 3 (3) Threaded Joint (7) Adaptor 4 (4) Adaptor 1 (8) Adaptor 5 W10243180 Adaptor 7 Code No.:...
Page 60 M105S, WSM G GENERAL Nozzle Tester Code No.: 07909-31361 Application: Use to check the fuel injection pressure and spray pattern of nozzle. Measuring : 0 to 50 MPa range (0 to 500 kgf/cm , 0 to 7000 psi) W10246530 Plastigage Code No.:...
Page 61 M105S, WSM G GENERAL NOTE • The following special tools are not provided, so make them referring to the figure. Small End Bushing Replacing Tool Application: Use to press out and to press fit the small end bushing. [Press out] 157 mm (6.1811 in.)
Page 62 M105S, WSM G GENERAL Idle Gear Bushing Replacing Tool Application: Use to press out and to press fit the bushing. 1. For idle gear bushing 196 mm (7.7165 in.) 37.5 mm (1.476 in.) 150 mm (5.9055 in.) 44.95 mm dia. (1.7697 in. dia.) 48.075 to 48.100 mm dia.
Page 63 M105S, WSM G GENERAL Valve Guide Replacing Tool Application: Use to press out and press fit the valve guide. 20 mm dia. (0.79 in. dia.) 11.7 to 11.9 mm dia. (0.460 to 0.468 in. dia.) 6.5 to 6.6 mm dia. (0.256 to 0.259 in. dia.) 225 mm (8.86 in.)
Page 64 M105S, WSM G GENERAL Balancer Bushing Replacing Tool 1 Assembly Application: Use to press fit the bushing. name of Part Q'ty Remarks Shaft – Piece 1 – Piece 2 – M6 × P1.0 Bolt W1035596 Balancer Bushing Replacing Tool 1 Components Parts 1) Shaft 498 mm (19.61 in.)
Page 65 M105S, WSM G GENERAL 2) Piece 1 Chamfer 0.1 mm (0.004 in.) 1 mm (0.04 in.) Chamfer 1 mm (0.04 in.) 53.8 to 53.9 mm dia. (2.1181 to 2.1220 in. dia.) 20.02 to 20.041 mm dia. (0.7882 to 0.7890 in. dia.) 48 mm dia.
Page 66 M105S, WSM G GENERAL Balancer Bushing Replacing Tool 2 Application: Use to press fit the bushing. 35 mm (1.38 in.) 33 mm (1.30 in.) Chamfer 0.5 mm (0.02 in.) 1 mm (0.04 in.) Chamfer 1 mm (0.04 in.) 40 mm dia. (1.57 in. dia.) 50.921 to 50.94 mm dia.
Page 67 M105S, WSM G GENERAL Balancer Bushing Replacing Tools 3, 4, 5 Application: Use to press fit the bushing. Name of Part Q'ty Bracket Flange Nut Washer Shaft Piece 1 Clevis Washer Cotter Pin Joint 1 Piece 2 Joint 2 Piece 3...
Page 68 M105S, WSM G GENERAL 2) Shaft 44 mm dia. (1.73 in. dia.) 12 mm (0.47 in.) Chamfer 1 mm (0.04 in.) 3 mm (0.12 in.) 3 mm (0.12 in.) 30 mm (1.18 in.) 38 mm (1.38 in.) 35 mm (1.38 in.) M12 ×...
Page 69 M105S, WSM G GENERAL 4) Joint 1 M12 × P1.25 Chamfer 1 mm (0.04 in.) 30 mm dia. (1.18 in. dia.) 13 mm dia. (0.51 in. dia.) Chamfer 3 mm (0.12 in.) 3 mm (0.12 in.) 45 mm (1.77 in.) 75 mm (2.95 in.)
Page 70 M105S, WSM G GENERAL 6) Joint 2 M12 × P1.25 Chamfer 1 mm (0.04 in.) 30 mm dia. (1.18 in. dia.) 13 mm dia. (0.51 in. dia.) Chamfer 3 mm (0.12 in.) 3 mm (0.12 in.) 45 mm (1.77 in.) 75 mm (2.95 in.)
Page 71 M105S, WSM G GENERAL Engine Stand Application: Use to support engine. 480 mm (18.90 in.) 50 mm (1.97 in.) 108.5 mm (4.272 in.) 263 mm (10.35 in.) 12.5 mm (0.492 in.) 237.5 mm (9.350 in.) 142.5 mm (5.610 in.) 95 mm (3.74 in.) 4.14 mm dia.
Page 72 M105S, WSM G GENERAL Nozzle Adaptor for Measuring Cylinder Compression Pressure Application: Use for measuring diesel engine compression pressure. 5 mm (0.1969 in.) 3 mm dia., 44.5 to 45 mm depth (0.1181 in. dia., 1.7520 to 1.7717 in. depth) 115.9 to 116.1 mm (4.5630 to 4.5709 in.) 105 mm (4.1339 in.)
Page 73 M105S, WSM G GENERAL Jig for Governor Connecting Rod Application: Use for connecting the governor connecting rod to the rack pin of the fuel injection pump assembly. 1 mm (0.0394 in.) C0.2 mm (0.0079 in.) C2 mm (0.0787 in.) 35 mm dia. (1.3780 in. dia.) C1 mm (0.0394 in.)
Page 74 M105S, WSM G GENERAL Injection Pump Gear Puller Application : Use for removing the injection pump gear from injection pump shaft. 50 mm (1.97 in.) 30 mm (1.18 in.) 20 mm (0.079 in.) 22 mm dia. (0.87 in. dia.) 19 mm (0.75 in.) M22 ×...
Page 75: Special Tools For Tractor
M105S, WSM G GENERAL [2] SPECIAL TOOLS FOR TRACTOR Tie-rod End Lifter Code No. : 07909-39051 Application : Use for removing the tie-rod end with ease. W10264720 Steering Wheel Puller Code No. : 07916-51090 Application : Use for removing the steering wheel without damaging the steering shaft.
Page 76 M105S, WSM G GENERAL Adaptor Set for Flow Meter Code No. : 07916-54031 Application : Use for testing the hydraulic system. (1) Adaptor 52 (8) Adaptor 65 (2) Adaptor 53 (9) Adaptor 66 (3) Adaptor 54 (10) Adaptor 67 (4) Adaptor 61...
Page 77 M105S, WSM G GENERAL Relief Valve Setting Pressure Adaptor G Code No. : 07916-52751 Application : This offers easy measurement of relief valve setting pressure from the hydraulic coupler. This is available with the relief valve setting pressure tester. W10623960 Shuttle Clutch Compression Tool Code No.
Page 78 M105S, WSM G GENERAL Pressure Gauge 50 Code No. : 07916-52961 Application : This pressure gauge is used to measure the low oil pressure. W10518650 Pinion Locking Tool Code No. : 07916-52311 Application : Use for preventing the shaft from turning when removing the staking nut from the counter shaft and spiral bevel pinion shaft.
Page 79 M105S, WSM G GENERAL Rear Axle Nut Wrench 98 Code No. : 07916-52521 Application : Use for removing and installing a rear axle nut. W1031880 Power Steering Adaptor Code No. : 07916-54021 Application : Use for measuring the relief valve setting pressure for power steering.
Page 80 M105S, WSM G GENERAL NOTE • Special tools for R134a refrigerant air conditioning system introduced below are available from DENSO CO.LTD.. Air Conditioner Service Tool Code No. : DENSO.CO. 95048-00061 Application : Use for charging, testing or discharging the air conditioning system.
Page 81 M105S, WSM G GENERAL Adaptor (for R134a) Code No. : DENSO.CO. 95048-10190 (AC220V) 95048-10200 (AC240V) Application : Use for evacuating the air conditioning system. W1013888 NOTE • The following special tools are not provided, so make them referring to the figure.
Page 82 M105S, WSM G GENERAL Hydraulic Arm Shaft Bushing Press-Fitting Tool Application : Use for replacing the hydraulic arm shaft bushings in the hydraulic cylinder body. Right Left 64.75 to 64.95 mm 69.75 to 69.95 mm (2.5492 to 2.5571 in.) (2.7461 to 2.7539 in.) 17.5 to 18.5 mm...
Page 83 M105S, WSM G GENERAL Cylinder Safety Valve Setting Pressure Adaptor Application : Use for setting the safety valve to the nozzle tester to measure cracking pressure and check oil tightness of the safety valves. 45 mm (1.77 in.) 10 mm dia. (0.39 in. dia.) 40 mm (1.58 in.)
Page 84 M105S, WSM G GENERAL Stopper Magnet Clutch (For A/C Compressor) Application: Use to loosen and tighten the magnet clutch mounting nut. (Use radius M) 125 mm (4.92 in.) 4.52 rad (120 °) 40 mm dia. (1.57 in. dia.) Radius 27 mm (Radius 1.06 in.) Radius 33 mm (Radius 1.30 in.)
Page 85 M105S, WSM G GENERAL Stopper Bolt (for A/C Compressor) Application: Use with the stopper magnet clutch. 12 mm (0.47 in.) 5.5 mm dia. (0.22 in. dia.) 35 mm (1.38 in.) 6.5 mm dia. (0.26 in. dia.) 7 mm (0.28 in.) 0.52 rad (30 °)
Page 86 M105S, WSM G GENERAL Hydraulic Cylinder Block Tool Application : Use for separating a hydraulic cylinder block. NOTE • The sealing surface of the connecting parts must be welded. 75 mm (2.95 in.) 12 mm dia. (0.47 in. dia.) 24 mm (0.94 in.) Radius 31 mm (1.22 in.
Page 87 M105S, WSM G GENERAL Front Axle Rocking Restrictor 120 mm (4.72 in.) 12 mm (0.72 in.) M10 × P1.25 30 mm (1.18 in.) M16 × P1.5 10 mm (0.39 in.) 20 mm (0.79 in.) 36 mm (1.42 in.) 64 mm (2.52 in.) 45 mm (1.77 in.)
Page 88 M105S, WSM G GENERAL Clutch Compression Tool Application : Use exclusively for pushing the thrust collar to remove the external snap ring. 60 mm (2.36 in.) 120 mm (4.72 in.) M18 × P1.5 screw 45 mm (1.77 in.) 115 mm (4.53 in.) 12 mm (0.47 in.)
Page 89: Tires
M105S, WSM G GENERAL 9. TIRES [1] TYPE OF TIRES IMPORTANT • Do not use tires larger than specified Type of Tire Front Rear Farm Tire 340 / 85R24 (13.6R24) 460 / 85R34 (18.4R34) W1019656 [2] TREAD ADJUSTMENT CAUTION • When working on slopes or when working with trailer, set the wheel tread as wide as practical for maximum stability.
Page 90 M105S, WSM G GENERAL Tractor Tire sizes 340/85R24 1565 mm 1675 mm M105S (13.6R24) (61.6 in.) (66.9 in.) A : Tread NOTE • Need to limit turning angle deponded on the tire size. Refer to the chart provided for additional instructions.
Page 91: Rear Wheel
M105S, WSM G GENERAL (2) Rear Wheel Adjusting Rear Tread Rear tread width can be adjusted as shown with the standard equipped tires. To change the tread width. 1. Remove the wheel rim and / or disk mounting bolts. 2. Change the position of the rim and / or disk (right and left) to the desired position, and tighten the bolts.
Page 92: Wheel Hub
M105S, WSM G GENERAL [3] WHEEL HUB Front wheel hub Rear wheel hub Screw circle diameter 203.2 mm (8 in.) 203.2 mm (8 in.) Number of screws Screws M16 x P1.5 M16 x P1.5 Hub pilot diameter (B) 152.4 mm (6 in.) 152.4 mm (6 in.)
Page 93: Tire Liquid Injection
M105S, WSM G GENERAL [5] TIRE LIQUID INJECTION Auxiliary weights can be used to increase traction force for plowing in fields or clayey grounds. Another way is to inject water or another liquid, such as a calcium chloride solution in the tires. Water must not be used in winter since it freezes at 0 °C (32 °F).
Page 94 M105S, WSM G GENERAL Attaching Injector 1. Lift the rear tires off the ground. 2. Turn the tire so that the air valve is at the top. 3. Remove the air valve, and attach the injector (Code No. 07916- 52501).
Page 95 M105S, WSM G GENERAL Injection CAUTION • When a calcium chloride solution is used, cool it before pouring it into the tire. • Do not fill tires with water or solution more than 75 % of full capacity (to the valve stem level).
Page 96 M105S, WSM G GENERAL Draining Water or Solution 1. Lift the rear tires off the ground. 2. Turn the tire so that the air valve is at the bottom. 3. Remove the air valve, and drain liquid (liquid can only be drained to the level of the valve and liquid under that level remains inside).
Page 97: Implement Limitations
KUBOTA. Use with implements which are not sold or approved by KUBOTA and which exceed the maximum specifications listed below, or which are otherwise unfit for use with the KUBOTA Tractor may result in malfunctions or failures of the tractor, damage to other property and injury to the operator or others. [Any malfunctions or failures of the tractor resulting from use with improper implements are not covered by the warranty.]...
Page 98 M105S, WSM G GENERAL Implement Remarks M105S Max. Tank Capacity 5000 L (1321 U.S.gals, 1100 Imp.gals) Slurry Tank Max. Load Capacity 6000 kg (13200 lbs) Max. Load Capacity 7000 kg (15400 lbs) Trailer Max. Drawbar Load 1500 kg (3300 lbs) Max.
Page 99 M105S, WSM G GENERAL Implement Remarks M105S Max. Cutting Width 2600 mm (102 in.) Front Blade *1, *2 Max. Oil Pressure 19.6 MPa (200 kgf/cm , 2842 psi) Max. Cutting Width 2600 mm (102 in.) Rear Blade Max. Oil Pressure 19.6 MPa (200 kgf/cm...
Page 100 ENGINE KiSC issued 03, 2007 A...
Page 101 MECHANISM CONTENTS 1. FEATURE ...................... 1-M1 2. ENGINE BODY ..................... 1-M2 [1] CYLINDER BLOCK................. 1-M2 [2] HALF-FLOATING HEAD COVER ............1-M2 [3] CYLINDER HEAD ................... 1-M3 [4] CENTER DIRECT INJECTION SYSTEM (E-CDIS)......1-M3 [5] PISTON....................1-M4 [6] BUILT-IN DYNAMIC BALANCER ............1-M4 3.
Page 102: Feature
E-CDIS. Thus, this engine achieves high combustion efficiency and complies with various regulations of exhaust gas. Based upon the conventional model, Kubota developed a unique governor system and various new mechanisms which reduces exhaust emission, noise and vibration and realize durability and high torque.
Page 103: Engine Body
M105S, WSM ENGINE 2. ENGINE BODY [1] CYLINDER BLOCK This engine employs separate type crankcases - the crankcase 1 (1) with combustion part and the crankcase 2 (2) which supports the crankcase 1 (1) and reduces noise. Since it is a hanger type, you can easily assemble / disassemble it.
Page 104: Cylinder Head
M105S, WSM ENGINE [3] CYLINDER HEAD This engine employs four valve system, the cylinder head is provided with double intake passenge in order to ensure appropriate air suction and give an optimum swirl. (1) Intake (2) Exhaust W1012934 [4] CENTER DIRECT INJECTION SYSTEM (E-CDIS)
Page 105: Piston
M105S, WSM ENGINE V3 series DI engine has two intake valves and two exhaust valves per each cylinder. The rocker arm (1) contacts a bridge arm (2) instead of the valves stem tip. The bridge arm then contacts both intake valves or bath exhaust valves and causes two valves to open simultaneously.
Page 106: Lubricating System
M105S, WSM ENGINE 3. LUBRICATING SYSTEM [1] OIL COOLER V3 series engine has a water-cooled oil cooler that not only cools hot oil, but also warms the cool engine oil shortly after start up. As shown in the figure, the oil flows inside the...
Page 107: Cooling System
M105S, WSM ENGINE 4. COOLING SYSTEM [1] THERMOSTAT Conventional thermostatically-controlled valves (outlet water temperature control type) open against the flow of coolant. In this design, the pressure (steam pressure + water pump's discharge pressure) affects the open/close performance of such valve. In other words,...
Page 108: Bottom Bypass System
M105S, WSM ENGINE [2] BOTTOM BYPASS SYSTEM Bottom bypass system is introduced in V3 Series for improving the cooling performance of the radiator. While the temperature of coolant in the engine is low, the thermostat is held closed and the coolant is allowed to flow through the bypass pipe and to circulate in the engine.
Page 109: Fuel System
ENGINE 5. FUEL SYSTEM [1] GOVERNOR The engine employs the separated fuel injection pump in combination with Kubota's own small multi- function mechanical governor, which enables more dependability. It also employs the torque limiting mechanism to control the maximum peak torque so that it complies with the regulations of exhaust gas.
Page 110 M105S, WSM ENGINE At Idling Turn the speed control lever (3) clockwise to idle the engine. It tensions the governor spring (4) to pull the fork lever 2 (5). When the fork lever 2 is pulled, it moves the torque spring pin (6) and the fork lever 1 (7) in the direction of the arrow A to restrain the weight.
Page 111 M105S, WSM ENGINE To stop engine When the stop solenoid is turned off, the spring tension of the solenoid is released, the rod extrudes and the stop lever moves the control rack in the direction of the arrow B which stops the engine.
Page 112: 2-Stage Di Nozzle
M105S, WSM ENGINE [2] 2-STAGE DI NOZZLE Exhaust and noise regulations are becoming increasingly strict, particularly in regard to the reduction of NOx (nitrogen oxides) and particulates. The two-spring nozzle holder has been developed to reduce NOx (nitrogen oxides) and particulates from direct injection diesel engine exhaust.
Page 113: Injection Pump With F.s.p
M105S, WSM ENGINE A-B : First Spring's Set Force B-C-D : Combined Force of First and Second Springs P1 : First Opening Pressure P2 : Second Opening Pressure L : Full Needle Valve Lift I : Needle Valve Pre-lift X1 : Cam Angle (°) Y1 : Injection Rate (mm3/°)
Page 114: Automatic Timer
M105S, WSM ENGINE [4] AUTOMATIC TIMER The fuel camshaft is equipped with an automatic timer (Bosch SCDM type), which is designed to adjust the injection timing according to the engine speed and to obtain the best combustion efficiency. (Never disassemble the timer.)
Page 115: Intake System
M105S, WSM ENGINE 6. INTAKE SYSTEM [1] INTAKE AIR HEATER The intake air heater is introduced in order to further improve the starting performance and to reduce the white smoke at cold starting. The intake air heater is mounted on the intake manifold.
Page 116: Turbocharger System
M105S, WSM ENGINE 7. TURBOCHARGER SYSTEM [1] BOOST COMPENSATOR The boost compensator is controlled by the boost pressure of the turbocharger, which reduces transient smoke caused by oversupply of fuel when the engine starts and accelerates. When the boost pressure is lower than working pressure of the boost actuator (1), it prevents oversupply of fuel to reduce transient smoke.
Page 117 SERVICING CONTENTS 1. TROUBLESHOOTING ..................1-S1 2. SERVICING SPECIFICATIONS ..............1-S5 3. TIGHTENING TORQUES ................1-S11 4. CHECKING, DISASSEMBLING AND SERVICING........1-S12 [1] CHECKING AND ADJUSTING .............1-S12 (1) Engine Body..................1-S12 (2) Lubricating System ................1-S14 (3) Cooling System.................1-S15 (4) Fuel System ..................1-S17 [2] DISASSEMBLING AND ASSEMBLING..........1-S19 (1) Separating Front Axle Support as a Unit ..........1-S19 (2) Separating Engine from Clutch Housing...........1-S23 (3) Removing External Components ............1-S25...
Page 118: Troubleshooting
M105S, WSM ENGINE 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Engine Does Not Start No fuel Replenish fuel Air in the fuel system Vent air G-38 Water in the fuel system Change fuel and G-8, 26 repair or replace fuel...
Page 119 M105S, WSM ENGINE Reference Symptom Probable Cause Solution Page Engine Revolution Is Fuel filter clogged or dirty Replace G-30 Not Smooth Air cleaner clogged Clean or replace G-20 Fuel leak due to loose injection pipe retaining nut Tighten retaining nut...
Page 120 M105S, WSM ENGINE Reference Symptom Probable Cause Solution Page Deficient Output Incorrect injection timing Adjust 1-S17 Engine's moving parts seem to be seizing Repair or replace – Injection pump malfunctioning Repair or replace 1-S17, 33 to Deficient nozzle injection Repair or replace...
Page 121 M105S, WSM ENGINE Reference Symptom Probable Cause Solution Page High Oil Pressure Different type of oil Use specified type of Relief valve defective Replace 1-S46 Engine Overheated Engine oil insufficient Replenish G-8, 15 Fan belt broken or elongated Replace or adjust...
Page 122: Servicing Specifications
M105S, WSM ENGINE 2. SERVICING SPECIFICATIONS ENGINE BODY Item Factory Specification Allowable Limit Cylinder Head Surface Flatness – 0.05 mm 0.0020 in. Top Clearance 0.72 to 0.90 mm – 0.0283 to 0.0354 in. Compression Pressure 3.47 MPa / 2.56 MPa / −...
Page 123 M105S, WSM ENGINE Item Factory Specification Allowable Limit Intake Valve Timing Open 0.24 rad (14 °) – before T.D.C. Close 0.61 rad (36 °) – after B.D.C. Exhaust Valve Timing Open 0.785 rad (45 °) – before B.D.C. Close 0.29 rad (17 °) –...
Page 124 M105S, WSM ENGINE Item Factory Specification Allowable Limit Cam Height Intake 37.63 mm 37.13 mm 1.4815 in. 1.4618 in. Exhaust 38.96 mm 38.46 mm 1.5338 in. 1.5141 in. Camshaft Oil Clearance 0.050 to 0.091 mm 0.15 mm 0.00197 to 0.00358 in.
Page 125 M105S, WSM ENGINE Item Factory Specification Allowable Limit Balancer Shaft Oil Clearance 0.070 to 0.159 mm 0.2 mm 0.0028 to 0.0063 in. 0.0079 in. Balancer Shaft 50.92 to 50.94 mm – Journal 2.0047 to 2.0055 in. (O.D.) Balancer Bearing 51.01 to 51.08 mm –...
Page 126 M105S, WSM ENGINE LUBRICATING SYSTEM Item Factory Specification Allowable Limit Engine Oil Pressure At Idle Speed – 49 kPa 0.5 kgf/cm 7 psi At Rated Speed 196 to 392 kPa 147.1 kPa 2.0 to 4.0 kgf/cm 1.5 kgf/cm 28 to 57 psi 21.3 psi...
Page 127 M105S, WSM ENGINE FUEL SYSTEM Item Factory Specification Allowable Limit Injection Timing 0.12 to 0.16 rad – (7 to 9 °) before T.D.C. Fuel Injection Nozzle Injection Pressure 18.63 to 19.61 MPa – (1st stage) 190 to 200 kgf/cm 2702 to 2845 psi Injection Pressure 23.54 to 24.52 MPa...
Page 128: Tightening Torques
M105S, WSM ENGINE 3. TIGHTENING TORQUES Tightening torque of screws, bolts and nuts on the table below are especially specified. (For general screws, bolts and nuts : See page G-10.) Item N·m kgf·m ft-lbs Cylinder head cover screw 6.9 to 11.3 0.7 to 1.15...
Page 129: Checking, Disassembling And Servicing
M105S, WSM ENGINE 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING (1) Engine Body Compression Pressure 1. After warming up the engine, stop it and remove the air cleaner, the muffler, high pressure pipes, cylinder head cover, overflow pipe, all nozzle holders and all nozzle gaskets.
Page 130 M105S, WSM ENGINE Checking Valve Clearance IMPORTANT • Valve clearance must be checked and adjusted when engine is cold. 1. Remove the high pressure pipes and the head cover. 2. Align the 1TC mark of flywheel and the convex of flywheel housing timing windows so that the first piston (gear case side) comes to the compression top dead center.
Page 131: Lubricating System
M105S, WSM ENGINE (2) Lubricating System Engine Oil Pressure 1. Remove the oil switch and set a pressure tester (Code No. 07916-32031). 2. Start the engine. After warming up, measure the oil pressure of both idling and rated speeds. 3. If the oil pressure is less than the allowable limit, check the following.
Page 132: Cooling System
M105S, WSM ENGINE (3) Cooling System Fan Belt Tension 1. Press the fan belt between alternator and crank pulley at force of 98 N (10 kgf, 22 lbs). Check if the fan belt deflection is 10 to 12 mm (0.394 to 0.472 in.).
Page 133 M105S, WSM ENGINE Radiator Water Leakage 1. Pour a specified amount of water into the radiator. 2. Set a radiator tester. Increase water pressure to the specified pressure of 137 kPa (1.4 kgf/cm , 20 psi). 3. Check the radiator for water leaks.
Page 134: Fuel System
M105S, WSM ENGINE (4) Fuel System Injection Timing 1. Make sure of matching the injection timing align mark (1) of the injection pump unit and the plate (gearcase), as shown in the illustration. 2. Remove the injection pipes. 3. Remove the stop solenoid.
Page 135 M105S, WSM ENGINE Fuel Injection Timer Test 1. Remove the injection pump unit. (Refer to “Injection Pump Unit”. (See page 1-S33 to 36.) 2. Check the fuel injection timer on the test bench in Bosch service shop. W1029657 CAUTION • Check the nozzle injection pressure and condition after confirming that there is nobody standing in the direction the spray goes.
Page 136: Disassembling And Assembling
M105S, WSM ENGINE [2] DISASSEMBLING AND ASSEMBLING (1) Separating Front Axle Support as a Unit Draining Coolant CAUTION • Never remove the radiator cap until coolant temperature is well below its boiling point. Then loosen cap slightly to the stop to relieve any excess pressure before removing cap completely.
Page 137 M105S, WSM ENGINE Muffler and Bonnet 1. Open the bonnet (1) and disconnect the battery (2) negative terminal and head light 4P connector (7). 2. Remove the bonnet dampers (3) and close the bonnet (1). 3. Remove the bonnet hinge mounting screws (4) through the holes (5) in the upper part of the bonnet.
Page 138 M105S, WSM ENGINE Propeller Shaft 1. Slide the propeller shaft cover (3) after removing the screw (5). 2. Tap out the spring pins (2) and then slide the coupling (1) to the rear. (When reassembling) • Apply grease to the splines of the propeller shaft (6) and the pinion shaft.
Page 139 M105S, WSM ENGINE Air Condenser and Compressor Without discharging the refrigerant from system 1. Remove the air condenser slide stopper (1) and slide out the air condenser (2). 2. Remove the compressor (3) with hoses. (When reassembling) • Take care not to damage the air condenser fin.
Page 140: Separating Engine From Clutch Housing
M105S, WSM ENGINE (2) Separating Engine from Clutch Housing Fuel Pipe, Accelerator Cable, Heater Hose and Wire Harness 1. Disconnect the fuel pipe (1) from injection pump. 2. Disconnect the overflow hose (2). 3. Disconnect the accelerator cable (3) from injection pump.
Page 141 M105S, WSM ENGINE Separating Engine from Clutch Housing 1. Remove the floor mat (1) and panel cover (2). 2. Hoist the engine by hoist and chain. 3. Remove the engine mounting screws and nuts, and separate the engine from the clutch housing.
Page 142: Removing External Components
M105S, WSM ENGINE (3) Removing External Components External Components 1. Remove the damper disc (1). 2. Remove the all radiator hoses (2). 3. Remove the muffler (3). 4. Remove the steering controller (4). 5. Remove the fan (5) and fan belt (6).
Page 143: Turbocharger
M105S, WSM ENGINE (4) Turbocharger CAUTION • While the engine is running and or just after it stops, the turbocharger is hot, be careful not to touch the turbocharger. NOTE • When detaching and attaching the turbocharger assembly, be very careful not to allow dust, dirt and other foreign matter in the oil pipes.
Page 144 M105S, WSM ENGINE Turbocharger 1. Remove the screw (1) and bolt (2). 2. Take off the turbocharger assembly (3). (When reassembling) • Replace the gasket with new one. (1) Screw (3) Turbocharger Assembly (2) Bolt W1036884 KiSC issued 03, 2007 A...
Page 145: Cylinder Head And Valves
M105S, WSM ENGINE (5) Cylinder Head and Valves Cylinder Head Cover and Nozzle Holder 1. Remove the injection pipes (1). 2. Remove the cylinder head cover (2). 3. Remove the overflow pipe (3). 4. Remove the nozzle holder clamps (4), nozzle holder assembly (5) and nozzle gaskets.
Page 146 M105S, WSM ENGINE Rocker Arm and Push Rod 1. Remove the rocker arm (1) as a unit. 2. Remove the push rods (2). 3. Detach the bridge arm (4). (When reassembling) • When putting the push rods onto the tappets, check to see if their ends are properly engaged with the grooves.
Page 147 M105S, WSM ENGINE Cylinder Head and Tappet 1. Loosen the pipe band, and remove the water return pipe (1). 2. Disconnect the fuel pipe (3) first and then the fuel filter (2). 3. Remove the IN. / EX. Manifold. 4. Remove the cylinder head screw in the order of (18) to (1), and remove the cylinder head.
Page 148 M105S, WSM ENGINE Selecting Cylinder Head Gasket Replacing the Cylinder Head Gasket 1. Make sure to note the notch (a), (b) or (c) of cylinder head gasket (1) in advance. 2. Replace the same notch (a), (b) or (c) as the original cylinder head gasket (1).
Page 149: Thermostat
M105S, WSM ENGINE (6) Thermostat Thermostat Assembly 1. Remove the thermostat cover mounting screws, and remove the thermostat cover (1). 2. Remove the thermostat assembly (3). (When reassembling) • Apply a liquid gasket (Three Bond 1215 or equivalent) only at the thermostat cover side of the gasket (2).
Page 150: Injection Pump Unit
M105S, WSM ENGINE (7) Injection Pump Unit Injection Pump Unit (Removing the fuel injection pump unit) 1. Remove the lubricating oil pipe (1) for the automatic timer. 2. Detach the gear cover (2) for the fuel injection pump gear from the gear case.
Page 151 M105S, WSM ENGINE Injection Pump Unit (Continued) (Removing the fuel injection pump unit) 1. Remove the injection pump gear mounting nut (9) and washer (10). 2. Set the injection pump gear puller (11) (see page G-59) for the injection pump gear (12).
Page 152 M105S, WSM ENGINE Injection Pump Unit (Continued) (Reassembling the fuel injection pump unit) 1. Place the piston of the 4th cylinder at the top dead center in the compression stroke. Fix the flywheel with the flywheel stopper. 2. Place the injection pump gear with the automatic timer (1) back into the gear case position.
Page 153 M105S, WSM ENGINE Injection Pump Unit (Continued) (Reassembling the fuel injection pump unit) 1. Reconnect the governor lubricating oil pipe retaining nut (9). 2. Attach the gear cover (10). 3. Reconnect the lubricating pipe for the automatic timer (11). 4. Fix the injection pump unit support (12).
Page 154 M105S, WSM ENGINE Governor Housing Assembly 1. Remove the injection pump unit from the engine. (See the “Injection Pump Unit”.) 2. Remove the governor lubricating pipe (1). 3. Remove the stop solenoid (2). 4. Detach the sight cover (3) from the injection pump unit.
Page 155 M105S, WSM ENGINE Governor Fork Lever Assembly 1. Pull off the governor fork lever shaft (1) with the extra screw (Dia.: 4 mm, Pitch : 0.7 mm, Length : more than 25 mm) (2). 2. Unhook the governor spring (3) at the governor fork lever (4) side.
Page 156 M105S, WSM ENGINE Governor Lever 1. Remove the speed control lever (1) and the return spring (2). 2. Remove the governor lever assembly (3) from the governor housing. 3. Remove the start spring (4) and the stop spring (5). (1) Speed Control Lever...
Page 157 M105S, WSM ENGINE Fuel Camshaft and Governor Weight 1. Separate the governor housing assembly from the injection pump unit. (See the “Injection Pump Unit”.) 2. Remove the governor sleeve (1). 3. Remove the injection pump assembly (2). 4. Remove the fuel camshaft lock screws.
Page 158 M105S, WSM ENGINE Fuel Camshaft and Governor Weight (Continued) (When reassembling) • Fix the fuel camshaft with lock bolts as the key way of fuel camshaft (9) is upward. • Install the injection pump assembly to the injection pump housing.
Page 159 M105S, WSM ENGINE Replacing Injection Pump Assembly (If necessary) • The injection pump can be replaced with the crankshaft in whatever position. 1. Disconnect all injection pipes (1). 2. Disconnect the fuel pipe (2) and fuel overflow pipe (10). 3. Disconnect the connector (3) from the stop solenoid.
Page 160 M105S, WSM ENGINE Installing Procedure of Injection Pump Assembly 1. Install the injection pump assembly (1) in the unit (2), and tighten the mounting screws and nuts like the figure, which the injection pump assembly (1) keeps tilted. 2. Hook the governor connecting rod (4) to the rack pin of the injection pump assembly (1).
Page 161 M105S, WSM ENGINE Installing Procedure (Continued) 1. Move the stop lever (1) and visually check to see if the fuel injection pump control rack comes smoothly back to the start position by the counter force of the start spring. 2. If the control rack fails to move back smoothly, remove the start spring and the anti-rotation nut, take the above steps from 2 of the former page again.
Page 162: Water Pump And Oil Cooler
M105S, WSM ENGINE (8) Water Pump and Oil Cooler Water Pump 1. Remove the pipe band and the water pipe (1). 2. Remove the water pump (2). (When reassembling) • When mounting the water pump, take care not to forget mounting the O-ring and not to let it out of position.
Page 163: Gear Case
M105S, WSM ENGINE (9) Gear Case Gear Case Cover 1. Remove the gear case cover. (When reassembling) • Confirm that the liquid gasket coating surface is free of water, dust and oil in order to maintain sealing effect. • Carefully apply the adhesive evenly. (Refer to the figure on the...
Page 164 M105S, WSM ENGINE Camshaft and Balancer Shaft 1. Remove the camshaft set screws and draw out the camshaft (1). 2. Remove the balancer shaft 1 set screws and draw out the balancer shaft 1 (2). 3. Remove the balancer shaft 2 set screws and draw out the balancer shaft 2 (6).
Page 165: Piston And Connecting Rod
M105S, WSM ENGINE (10) Piston and Connecting Rod Oil Pan and Oil Strainer 1. Unscrew the oil pan mounting screws and remove the oil pan (1). 2. Unscrew the oil strainer mounting screw, and remove the oil strainer (2). (When reassembling) •...
Page 166 M105S, WSM ENGINE Connecting Rod Cap 1. Remove the connecting rod screws (1) from connecting rod cap. 2. Remove the connecting rod caps. (When reassembling) • Align the marks (a) with each other. (Face the marks toward the injection pump.) •...
Page 167 M105S, WSM ENGINE Piston 1. Completely clean carbon in the cylinders. 2. Turn the flywheel and set a piston to the top dead center. 3. Pull out the piston upward by lightly tapping it from the bottom of the crankcase with the grip of a hammer.
Page 168 M105S, WSM ENGINE Piston Ring and Connecting Rod 1. Remove the piston rings using a piston ring tool. 2. Remove the piston pin (1), and separate the connecting rod (7) from the piston (2). (When reassembling) • Be sure to fix the crankpin bearing and the connecting rod are same I.D.
Page 169: Flywheel And Crankshaft
M105S, WSM ENGINE (11) Flywheel and Crankshaft Flywheel 1. Install the stopper to the flywheel so that the flywheel does not turn. NOTE • Do not use an impact wench. Serious damage will occur. 2. Detach the flywheel screws. 3. Remove the flywheel.
Page 170 M105S, WSM ENGINE Crankcase 1 and Crankcase 2 1. Remove the crankcase 2 (2) from the crankcase 1. (When reassembling) IMPORTANT • Make sure the crankcase 1 and 2 are clean. • Confirm that the liquid gasket coating surface is free of water, dust and oil in order to maintain sealing effect.
Page 171 M105S, WSM ENGINE Crankshaft 1. Remove the main bearing case. 2. Remove the crankshaft. (When reassembling) • Reassemble the main bearing case having the same number as the one engraved on the crankcase, and set the casting mark “F / W SIDE” on the main bearing case facing towards the flywheel side.
Page 172: Servicing
M105S, WSM ENGINE [3] SERVICING (1) Cylinder Head Cylinder Head Surface Flatness 1. Clean the cylinder head surface. 2. Place a straightedge on the cylinder head's four sides (A), (B), (C) and (D) and two diagonal (E) and (F) as shown in the figure.
Page 173 M105S, WSM ENGINE Valve Recessing 1. Clean the cylinder head, the valve face and seat. 2. Insert the valve into the valve guide. 3. Measure the valve recessing with a depth gauge. 4. If the measurement exceeds the allowable limit, replace the valve.
Page 174 M105S, WSM ENGINE Clearance between Valve Stem and Valve Guide 1. Remove carbon from the valve guide section. 2. Measure the valve stem O.D. with an outside micrometer. 3. Measure the valve guide I.D. of the cylinder head at the most wear part as shown in the figure below with a small hole gauge.
Page 175 M105S, WSM ENGINE Correcting Valve and Valve Seat NOTE • Before correcting the valve and seat, check the valve stem and the I.D. of valve guide section, and repair them if necessary. • After correcting the valve seat, be sure to check the valve recessing.
Page 176 M105S, WSM ENGINE Valve Spring Setting Load 1. Place the valve spring on a tester and compress it to the same length it is actually compressed in the engine. 2. Read the compression load on the gauge. 3. If the measurement is less than the allowable limit, replace it.
Page 177 M105S, WSM ENGINE Oil Clearance between Tappet and Tappet Guide Bore 1. Measure the tappet O.D. with an outside micrometer. 2. Measure the I.D. of the tappet guide bore with a cylinder gauge, and calculate the oil clearance. 3. If the oil clearance exceeds the allowable limit or the tappet is damaged, replace the tappet.
Page 178: Idle Gear And Camshaft
M105S, WSM ENGINE (2) Idle Gear and Camshaft Timing Gear Backlash 1. Set a dial indicator (lever type) with its tip on the gear tooth. 2. Move the gear to measure the backlash, holding its mating gear. 3. If the backlash exceeds the allowable limit, check the oil clearance of the shafts and the gear.
Page 179 M105S, WSM ENGINE Camshaft Side Clearance 1. Set a dial indicator with its tip on the camshaft. 2. Measure the side clearance by moving the cam gear to the front and rear. 3. If the measurement exceeds the allowable limit, replace the camshaft stopper.
Page 180 M105S, WSM ENGINE Oil Clearance of Camshaft Journal 1. Measure the camshaft journal O.D. with an outside micrometer. 2. Measure the cylinder block bore I.D. for camshaft with an inside micrometer. 3. If the oil clearance exceeds the allowable limit, replace the camshaft.
Page 181 M105S, WSM ENGINE Replacing Idle Gear Bushing (When removing) 1. Using an idle gear bushing replacing tool, press out the used bushing. (When installing) 1. Clean a new idle gear bushing and idle gear bore, and apply engine oil to them.
Page 182: Piston And Connecting Rod
M105S, WSM ENGINE Oil Clearance of Balancer-shaft Journal 1. Measure the balancer shaft journal O.D. with an outside micrometer. 2. Measure the cylinder block bore I.D. (A), (B) for balancer shaft with an inside micrometer. 3. If the clearance exceeds the allowable limit, replace the balancer shaft.
Page 183 M105S, WSM ENGINE Clearance between Piston Ring and Groove 1. Remove carbon from the ring grooves. 2. Measure the clearance between the ring and the groove with a feeler gauge or depth gauge. 3. If the clearance exceeds allowable limit, replace the ring since compression leak and oil shortage result.
Page 184 M105S, WSM ENGINE Oil Clearance between Piston Pin and Small End Bushing 1. Measure the O.D. of the piston pin where it contacts the bushing with an outside micrometer. 2. Measure the I.D. of the piston pin bushing at the connecting rod small end with a cylinder gauge.
Page 185: Crankshaft
M105S, WSM ENGINE Connecting Rod Alignment NOTE • Since the I.D. of the connecting rod small end bushing is the basis of this check, check the bushing for wear beforehand. 1. Remove the piston pin in the connecting rod. 2. Install the piston pin in the connecting rod.
Page 186 M105S, WSM ENGINE Crankshaft Alignment 1. Support the crankshaft with V block on the surface plate and set a dial indicator with its tip on the intermediate journal at right angle. 2. Rotate the crankshaft on the V block and get the misalignment (half of the measurement).
Page 187 M105S, WSM ENGINE Oil Clearance between Crankpin and Crankpin Bearing (Continued) IMPORTANT • STD size crankpin bearing. To replace it with a specific STD service part, make sure the crankpin bearing has the same ID color as the connecting rod.
Page 188 M105S, WSM ENGINE Oil Clearance between Crankshaft Journal and Crankshaft Bearing 1. Clean the crankshaft journal and crankshaft bearing. 2. Put a strip of press gauge (Code No.: 07909-30241) on the center of the journal. IMPORTANT • Never insert the press gauge into the oil hole of the journal.
Page 189: Cylinder
M105S, WSM ENGINE (5) Cylinder Cylinder Wear 1. Measure the I.D. of the cylinder at the six positions (see figure) with a cylinder gauge to find the maximum and minimum I.D.’s. 2. Get the difference (Maximum wear) between the maximum and the minimum I.D.’s.
Page 190: Oil Pump
M105S, WSM ENGINE (6) Oil Pump Rotor Lobe Clearance 1. Measure the clearance between lobes of the inner rotor and the outer rotor with a feeler gauge. 2. If the clearance exceeds the allowable limit, replace the oil pump rotor assembly.
Page 191 CLUTCH KiSC issued 03, 2007 A...
Page 192 MECHANISM CONTENTS 1. TRAVELING CLUTCH .................. 2-M1 [1] STRUCTURE ................... 2-M1 [2] OIL FLOW ....................2-M2 2. PTO CLUTCH ....................2-M3 [1] STRUCTURE ................... 2-M3 [2] OIL FLOW ....................2-M4 KiSC issued 03, 2007 A...
Page 193: Traveling Clutch
M105S, WSM CLUTCH 1. TRAVELING CLUTCH [1] STRUCTURE (1) Clutch Pedal (3) Hydraulic Shuttle Valve (5) Reverse Side Clutch (7) Damper Disc (2) Clutch Cable (4) Return Spring (6) Forward Side Clutch The damper disc (7) helps ease the shock load when engaging the shuttle clutch.
Page 194: Oil Flow
M105S, WSM CLUTCH [2] OIL FLOW (1) Shuttle Valve (2) Regulator Valve (3) Shuttle Lever (4) Clutch Pedal (5) Forward Clutch (6) Reverse Clutch (7) Spool (A) From Pump (B) To PTO Clutch (C) To Power Steering W1012813 The oil from regulator valve (2) flows into the shuttle valve (1).
Page 195: Pto Clutch
M105S, WSM CLUTCH 2. PTO CLUTCH [1] STRUCTURE The PTO shift lever (1) and the PTO clutch valve (3) are connected by the PTO shift cable (2) as shown in the figure. When the PTO shift lever (1) is moved to the B side, the PTO clutch valve (3) is set at “Engaged”...
Page 196: Oil Flow
M105S, WSM CLUTCH [2] OIL FLOW The oil from the regulator valve (5) flows to the PTO valve built into the pump base (6). When the PTO lever (7) is at the “Disengaged” position, the oil flows is stopped by the PTO clutch valve (1), When the PTO lever (7) is at the “Engaged”...
Page 197 SERVICING CONTENTS 1. TROUBLESHOOTING ..................2-S1 2. SERVICING SPECIFICATION ...............2-S2 3. TIGHTENING TORQUES ................2-S3 4. CHECKING, DISASSEMBLING AND SERVICING........2-S4 [1] CHECKING AND ADJUSTING ...............2-S4 (1) Traveling Clutch ..................2-S4 (2) PTO Clutch ..................2-S6 [2] DISASSEMBLING AND ASSEMBLING..........2-S7 (1) Removing Damper Disc ..............2-S7 (2) Removing Shuttle Clutch Valve ............2-S13 (3) Removing PTO Clutch Valve ............2-S14 (4) PTO Clutch Pack ................2-S16...
Page 198: Troubleshooting
M105S, WSM CLUTCH 1. TROUBLESHOOTING TRAVELING CLUTCH Reference Symptom Probable Cause Solution Page Shuttle Clutch Slip Operating pressure is low Adjust 8-S11 Shuttle clutch valve malfunctioning Replace 2-S13 Clutch disc or steel plate excessively worn Replace 3-S38 Deformation of piston or steel plate...
Page 199: Servicing Specification
M105S, WSM CLUTCH 2. SERVICING SPECIFICATION TRAVELING CLUTCH Item Factory Specification Allowable Limit Clutch Pedal Free Travel Below 15 mm – 0.59 in. Total Stroke 150 to 155 mm – 5.9 to 6.1 in. Damper Disc Boss to Gear Shaft Backlash –...
Page 200: Tightening Torques
M105S, WSM CLUTCH 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts : See page G-10) Item N·m kgf·m ft-lbs High pressure hose retaining nut 11.8 to 14.7...
Page 201: Checking, Disassembling And Servicing
M105S, WSM CLUTCH 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING (1) Traveling Clutch Clutch Pedal Stroke 1. Stop the engine and remove the key. 2. Screw the lock nuts (1), (2) to the threaded end of cable as shown in figure.
Page 202 M105S, WSM CLUTCH Clutch Pedal Free Travel NOTE • Before checking the clutch pedal free travel A, be sure to adjust the pedal stroke. 1. Measure the clutch pedal free travel. 2. If adjustment is needed, loosen the lock nuts (1) and adjust the cable length within acceptable limits.
Page 203: Pto Clutch
M105S, WSM CLUTCH (2) PTO Clutch PTO Clutch Lever Movement 1. Stop the engine and remove the key. 2. Check the PTO clutch lever (1) on the “Engage” and “Disengage” position of PTO clutch lever guide. 3. If the adjustment is needed, loosen the lock nuts (3) and adjust the clutch control cable (2) length.
Page 204: Disassembling And Assembling
M105S, WSM CLUTCH [2] DISASSEMBLING AND ASSEMBLING (1) Removing Damper Disc Draining Coolant CAUTION • Never remove the radiator cap until coolant temperature is well below its boiling point. Then loosen cap slightly to the stop to relieve any excess pressure before removing cap completely.
Page 205 M105S, WSM CLUTCH Propeller Shaft 1. Remove the clutch housing under cover (1). 2. Tap out the spring pin (2) and then slide the coupling (3) to the front. (When reassembling) • Apply grease to the splines of coupling (3).
Page 206 M105S, WSM CLUTCH Air Cleaner Hoses and Cooler Pipes 1. Remove the side panel LH (1) and side panel RH (2). 2. Remove the shield weather strip (3) and radiator plate (4). 3. Remove the air cleaner hoses (5). 4. Disconnect the oil cooler pipe (6) and hose (7).
Page 207 M105S, WSM CLUTCH Air Condenser and Compressor Without discharging the refrigerant from system 1. Remove the air condenser slide stopper (1) and slide out the air condenser (2). 2. Remove the compressor (3) with hoses. (When reassembling) • Take care not to damage the air condenser fin.
Page 208 M105S, WSM CLUTCH Brake Oil Tank 1. Remove the brake oil tank (1) from the bonnet support (3). 2. Remove the stay (2). 3. Disconnect the tank air bleeder hoses (5). 4. Remove the muffler pipe support (4) and bonnet support (3).
Page 209 M105S, WSM CLUTCH Separating Engine from Clutch Housing 1. Check the engine and clutch housing case are securely mounted on the disassembling stands. 2. Install the front axle rocking restrictor (1) (See page G-72) to the front axle bracket. 3. Remove the floor mat (2) and panel cover (3).
Page 210: Removing Shuttle Clutch Valve
M105S, WSM CLUTCH Damper Disc 1. Remove the damper disc (1). (When reassembling) • Confirm that the bearing (2) is surely assembled to the flywheel. • Direct the shorter end of the damper disc boss toward the flywheel. • Apply molybdenum disulphide (Three Bond 1901 or equivalent) to the shaft A.
Page 211: Removing Pto Clutch Valve
M105S, WSM CLUTCH (3) Removing PTO Clutch Valve Gear Pump and Pump Base Assembly 1. Remove the seat (1) and floor cover (2). 2. Remove the floor mat (3) and inspection plate under the floor mat. 3. Remove the delivery pipe 1 (4) and delivery pipe 2 (5).
Page 212 M105S, WSM CLUTCH PTO Valve 1. Remove the both hydraulic pumps (1). 2. Remove the cap (2) and internal snap ring (3). 3. Remove the spring pin (4) and then tap out the pin (5). 4. Remove the all gears.
Page 213: Pto Clutch Pack
IMPORTANT • Use only KUBOTA SUPER UDT fluid. Use of other fluids may damage the transmission or hydraulic system. • Refer to “LUBRICANTS, FUEL AND COOLANT” (See page G-8.)
Page 214 M105S, WSM CLUTCH Fuel Tank and Auxiliary Step 1. Remove the auxiliary steps (1), (2). 2. Disconnect the 2P connector fuel tank unit (3). 3. Disconnect the fuel tank connector hose between left and right side fuel tanks. 4. Remove the fuel tank bands (4).
Page 215 M105S, WSM CLUTCH Separating Transmission Case 1. Remove the dual speed HI clutch pipe (4) and LO clutch pipe (5). 2. Remove the resonator pipe (9). 3. Remove the parking brake cable stay (6). 4. Remove the delivery pipe (8).
Page 216 M105S, WSM CLUTCH Rear Axle Case and Parking Brake Case 1. Remove the rear axle case mounting screws and nuts. 2. Support the rear axle case with nylon lift strap and hoist. 3. Separate the rear axle case from transmission case.
Page 217 M105S, WSM CLUTCH PTO Clutch Assembly 1. Remove the bearing retainer (1). 2. Remove the coupling (2) with bearing. 3. Remove the internal snap ring (3). 4. Tap out the PTO clutch shaft (4) to the front and remove the PTO clutch assembly (5).
Page 218 M105S, WSM CLUTCH Clutch Hub and Clutch Discs 1. Remove the internal snap ring (3) with the clutch compression tool (12). 2. Take out the plate assembly (4), clutch disc (5), drive plate (7), return plate (8), return spring (2), piston (6) and brake (1).
Page 219: Servicing
M105S, WSM CLUTCH [3] SERVICING (1) Damper Disc Backlash between Damper Disc Boss and Shaft 1. Mount the damper disc to the input shaft. 2. Hold the shaft so that it does not turn. 3. Rotate disc lightly and measure the displacement around the disc edge.
Page 220 M105S, WSM CLUTCH Flatness of PTO Piston, Return Plate and Plate Assembly 1. Plate the PTO piston (1), return plate (2) and plate assembly (3) on a surface plate. 2. Insert a thickness gauge (allowable limit size) underneath it at least four points.
Page 221 TRANSMISSION KiSC issued 03, 2007 A...
Page 222 MECHANISM CONTENTS 1. STRUCTURE ....................3-M1 2. GEAR SHIFT MECHANISM................. 3-M2 [1] SELECTING THE TRAVELING SPEED ..........3-M2 [2] MAIN GEAR SHIFT LEVER..............3-M3 [3] SWING SHIFT..................3-M5 [4] DUAL SPEED ..................3-M8 3. POWER TRAIN FOR TRAVELING GEAR..........3-M9 [1] SHUTTLE SHIFT SECTION ..............
Page 223: Structure
M105S, WSM TRANSMISSION 1. STRUCTURE 3TMACAK3P001A (1) Shuttle Shift Section (3) Range Gear Shift Section (4) Four Wheel Drive Section (5) PTO Gear Section (6) PTO Clutch Section (7) Hydraulic Pump Drive Gear (8) Swing Shift (HI-LO) (9) Dual Speed Section (HI-LO)
Page 224: Gear Shift Mechanism
M105S, WSM TRANSMISSION 2. GEAR SHIFT MECHANISM [1] SELECTING THE TRAVELING SPEED (1) Hydraulic Shuttle Shift Lever (2) Main Gear Shift Lever (3) Range Gear Shift Lever (4) Pilot Lamp (LOW) (5) Pilot Lamp (HIGH) (6) Creep Lever (Option) A : PUSH...
Page 225: Main Gear Shift Lever
M105S, WSM TRANSMISSION [2] MAIN GEAR SHIFT LEVER Main Gear Shift Lever Linkage 1. 8 speed can be selected by the main gear shift lever (1) and all speeds are fully synchronized to shift without stopping. 2. The main shift rod 1 (4), link arm (5) and main shift rod...
Page 226 M105S, WSM TRANSMISSION Shift Fork Rod and Fork (1) 3rd-4th Shift Fork Rod (2) 1st-2nd Shift Fork Rod (3) Shaft (4) 3rd-4th Shift Fork (5) Interlock Ball (6) Detent Ball (7) Safety Switch (8) Spring (9) Cam (10) Select Lever...
Page 227: Swing Shift
M105S, WSM TRANSMISSION [3] SWING SHIFT Operation Method 1. The swing shift is a method which the HI and LO speed range is changing by using the electric and hydraulic device combination. 2. The main gear shift lever is in Neutral position during the engine is running.
Page 228 M105S, WSM TRANSMISSION Electrical Device (1) Swing Shift Switch (5) HI Motion Switch A : To Meter Panel (10A Fuse) C : To Meter Panel (2) LO Solenoid Valve (6) Buzzer Relay B : To OPC Unit (Swing Shift HI)
Page 229 M105S, WSM TRANSMISSION Hydraulic Device 1. The shift fork rod (1) is used as a double acting piston. 2. The shift fork rod (1) is moved to the right or left by switching the solenoid valve (2), (3) and flowing oil into A chamber (4) or B chamber (5).
Page 230: Dual Speed
M105S, WSM TRANSMISSION [4] DUAL SPEED Dual Speed Model M105S has dual speed device as a standard equipment. The dual speed device consists of the HI-LO clutch, located in the mid case, and the clutch valve that controls the HI-LO clutch.
Page 231: Power Train For Traveling Gear
M105S, WSM TRANSMISSION 3. POWER TRAIN FOR TRAVELING GEAR [1] SHUTTLE SHIFT SECTION Forward Shift Input shaft (3) → clutch body (11) → forward clutch pack (5) → 29T gear (6). Reverse Shift Input shaft (3) → clutch body (11) → reverse clutch pack (4) →...
Page 232: Main Gear Shift And Swing Shift (Lo-Hi) Section
M105S, WSM TRANSMISSION [2] MAIN GEAR SHIFT AND SWING SHIFT (LO-HI) SECTION (1) Main Shaft (2) 19T Gear (3) Hub (4) 22T Gear (5) 28T Gear (6) 31T-18T Gear (7) Counter Shaft (8) Hub (9) 33T Gear (10) Hub (11) 30T Gear...
Page 233: Dual Speed Section
M105S, WSM TRANSMISSION [3] DUAL SPEED SECTION The dual speed clutch is controlled by the combination of the solenoid valve and the hydraulic flow. When the dual speed shift switch is pushed and indicator comes on, LO speed clutch (7) is engaged.
Page 234: Four-Wheel Drive Section
M105S, WSM TRANSMISSION [5] FOUR-WHEEL DRIVE SECTION (1) Spiral Bevel Pinion Shaft (3) 30T Gear (5) Coupling (7) Coupling (2) 32T Gear (4) Drive Shaft (6) Shifter (8) Front Wheel Drive Shaft 2-wheel drive or 4-wheel drive is selected by changing position of the shifter (6) on drive shaft (4) using the front wheel drive lever.
Page 235: Power Train For Pto System
M105S, WSM TRANSMISSION 4. POWER TRAIN FOR PTO SYSTEM [1] PTO GEAR SECTION (1) PTO Propeller Shaft (2) PTO Clutch (3) 12T Gear Shaft (4) 16T Gear (5) 49T Gear (6) 45T Gear (7) Shifter (8) Coupling (9) PTO Shaft...
Page 236 SERVICING CONTENTS 1. TROUBLESHOOTING ..................3-S1 2. SERVICING SPECIFICATIONS ..............3-S3 3. TIGHTENING TORQUES ................3-S5 4. CHECKING, DISASSEMBLING AND SERVICING........3-S6 [1] CHECKING AND ADJUSTING ...............3-S6 (1) Shuttle Lever ..................3-S6 (2) Main Gear Shift Lever ...............3-S11 (3) Range Gear Shift Lever ..............3-S12 [2] DISASSEMBLING AND ASSEMBLING..........3-S13 (1) Separating Each Block (Clutch Housing Case and Transmission) ...3-S13 (2) Disassembling Shuttle Case .............3-S19 (3) Disassembling Speed Change Cover ..........3-S22...
Page 237: Troubleshooting
M105S, WSM TRANSMISSION 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Excessive Transmission fluid insufficient Replenish Transmission Noise Improper backlash between bevel pinion shaft Repair 3-S43 and spiral bevel gear Improper backlash between differential pinion Adjust 3-S46 and side gear...
Page 238 M105S, WSM TRANSMISSION Reference Symptom Probable Cause Solution Page Gears Clash When Synchronizer unit damaged Repair or replace 3-S37 Shifting Clutch does not release Adjust 2-S4 Differential Lock Can Differential lock shift fork damage Replace 3-S32 Not Be Set Differential lock shift fork mounting spring pin...
Page 239: Servicing Specifications
M105S, WSM TRANSMISSION 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Shuttle Rod Length 65.0 mm – 2.56 in. Main Shift Rod 1 Length 489 mm – 19.25 in. Main Shift Rod 2 Length 120 mm – (Initial adjustment) 4.72 in.
Page 240 M105S, WSM TRANSMISSION Item Factory Specification Allowable Limit Spiral Bevel Pinion and Differential Turning Torque (Measurement valve of – Assembly spiral bevel pinion shaft only turning torque) 1.47 to 1.96 N·m 0.15 to 0.20 kgf·m 1.10 to 1.45 ft-lbs Spiral Bevel Gear to Spiral Bevel Pinion Backlash 0.15 to 0.25 mm...
Page 241: Tightening Torques
M105S, WSM TRANSMISSION 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts : See page G-10.) Item N·m kgf·m ft-lbs Tank stay mounting screw 196.1 to 225.6 20.0 to 23.0...
Page 242: Checking, Disassembling And Servicing
M105S, WSM TRANSMISSION 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING CAUTION • Park the machine on a firm, flat and level surface, set the parking brake and place the gear shift in neutral. • Stop the engine and remove the key before checking and adjusting.
Page 243 M105S, WSM TRANSMISSION Checking Shuttle Valve Neutral Position and Lever Guide Neutral Position 1. The shuttle valve spool is provided with F, N and R ball detents. (Lift the shuttle lever (1) and slowly move it to the F and R directions until you feel the lever clicking at the ball detents.)
Page 244 M105S, WSM TRANSMISSION Adjusting Shuttle Lever Neutral Position (To be continue) 1. Shift the free play “D” toward the forward direction and slowly lower the shuttle lever as shown in the figure 1 [A]. And visually inspect the clearance “X”.
Page 245 M105S, WSM TRANSMISSION Adjusting Shuttle Lever Neutral Position (Continued) 1. Shift the free play “D” toward the rear direction and slowly lower the shuttle lever (1) as shown in the figure 2 [B]. And visually inspect the clearance “Y”. 2. Make sure the two clearances “X” and “Y” are just the same.
Page 246 M105S, WSM TRANSMISSION Adjusting Shuttle Lever Neutral Position (Continued) 1. If these clearances “X” and “Y” are not the same, readjust the shuttle cable (4) length “Z” with the retaining nuts (3). NOTE • Use two wrench to prevent the stay bends when adjust the length of the shuttle cable (4).
Page 247: Main Gear Shift Lever
M105S, WSM TRANSMISSION (2) Main Gear Shift Lever Checking Function of Main Gear Shift and Swing Shift (HI-LO) 1. Check the function of the main gear shift and swing shift (HI-LO). - Neutral position to 1st gear position. - Neutral position to 2nd gear position.
Page 248: Range Gear Shift Lever
M105S, WSM TRANSMISSION (3) Range Gear Shift Lever Check Function of Range Shift 1. Check the function of the range gear shift. - Hi and Lo position. 2. If feeling abnormal shifting, check the length of range gear shift rod (2).
Page 249: Disassembling And Assembling
IMPORTANT • Use only KUBOTA SUPER UDT fluid. Use of other fluids may damage the transmission or hydraulic system. • Refer to “LUBRICANTS, FUEL AND COOLANT” (See page G-8.)
Page 250 M105S, WSM TRANSMISSION Propeller Shaft 1. Remove the clutch housing under cover (1). 2. Tap out the spring pin (2) and then slide the coupling (3) to the front. (When reassembling) • Apply grease to the splines of coupling (3).
Page 251 M105S, WSM TRANSMISSION Fuel Tank and Auxiliary Step 1. Remove the auxiliary steps (1), (2). 2. Disconnect the 2P connector fuel tank unit (3). 3. Disconnect the fuel tank connector hose between left and right side fuel tanks. 4. Remove the fuel tank bands (4).
Page 252 M105S, WSM TRANSMISSION Gear Pump and Pump Base 1. Remove the suction pipes (1). 2. Remove the delivery pipes (2). 3. Remove the PTO pipe (3). 4. Remove the pump base with gear pumps. (When reassembling) • Replace the oil pipes with new ones and apply oil to them.
Page 253 M105S, WSM TRANSMISSION Separating Mid Case from Transmission Case 1. Remove the dual speed HI clutch pipe (4) and LO clutch pipe (5). 2. Remove the resonator pipe (9). 3. Remove the parking brake cable stay (6). 4. Remove the delivery pipe (8).
Page 254 M105S, WSM TRANSMISSION Separating Hydraulic Cylinder Assembly 1. Remove the hydraulic cylinder assembly mounting screws and nuts. 2. Support the hydraulic cylinder assembly (1) with nylon lift strap and hoist, and then remove it. 3. Remove the return pipe (2).
Page 255: Disassembling Shuttle Case
M105S, WSM TRANSMISSION (2) Disassembling Shuttle Case Shuttle Case Assembly CAUTION • The shuttle case assembly is heavy, so that take care it when handling. 1. Remove the screws and nut. 2. Remove the shuttle case assembly (1) by using M8 x Pitch 1.25 screws into holes A and B.
Page 256 M105S, WSM TRANSMISSION Disassembling Shuttle Case Assembly 1. Remove the external snap ring (8). 2. Top out the input shaft (2) with shuttle clutch and 26T gear shaft (3) together. (When reassembling) • Replace the seal rings (5), oil seal (6), sleeve (7) external snap rings (8) with new ones.
Page 257 M105S, WSM TRANSMISSION Shuttle Clutch Assembly 1. Remove the internal snap ring (1). 2. Remove the pressure plate (2), the drive plates (3), (4) and the clutch discs (5). 3. Remove the bearing (12). 4. Press the thrust collar (13) lightly with hand press, using hydraulic clutch spring compressor (15) (see page G-72), and remove the external snap ring (14).
Page 258: Disassembling Speed Change Cover
M105S, WSM TRANSMISSION (3) Disassembling Speed Change Cover Speed Change Cover 1. Remove the shuttle valve (1). 2. Remove the speed change cover (2). (When reassembling) • When reassembling the speed change cover (2) to clutch housing, set the 1-2 shift fork (4), 3-4 shift fork (5) and shifter in the transmission on neutral position, and Hi-Lo shift fork (3) and shifter in the transmission on Lo side.
Page 259 M105S, WSM TRANSMISSION HI-LO Shift Fork 1. Remove the Hi and Lo monitor switch (9). 2. Remove the internal snap ring (1) and the seal cap (2). 3. Remove the spring pin (4). 4. Remove the fork rod (3) by using M6 x Pitch 1 screw into the thread (10).
Page 260 M105S, WSM TRANSMISSION Shift Fork and Fork Rod 1. Set the both shift fork on neutral position. 2. Remove the both safety switches (10) on 1-2 shift fork rod (8) and 3-4 shift fork rod (7). 3. Remove the spring pin (3), (4).
Page 261: Disassembling Clutch Housing
M105S, WSM TRANSMISSION (4) Disassembling Clutch Housing Bearing Support and Main Shaft 1. Remove the bearing retainers (1). 2. Remove the external snap ring (2). 3. Tap out the main shaft (6) to the rear. 4. Remove the bearing support (5) by M8 x Pitch 1.25 screws into holes (A), (B).
Page 262 M105S, WSM TRANSMISSION Counter Shaft 1. Tap out the counter shaft (1) to front through the hole of the clutch hub (2). 2. Remove the external snap ring (3), then tap in the clutch hub (2) with bearing to the clutch housing.
Page 263: Disassembling Mid Case (Dual Speed Clutch)
M105S, WSM TRANSMISSION (5) Disassembling Mid Case (Dual Speed Clutch) Bearing Support and Dual Speed Clutch 1. Tap out the 27T gear shaft (2) and the 25T gear (4) with the bearing (3) together. 2. Remove the bearing (6) and the external snap ring (5).
Page 264 M105S, WSM TRANSMISSION Dual Speed Clutch Assembly 1. Remove the thrust collar (1) at LO clutch side. 2. Remove the internal snap ring (2). 3. Take out the pressure plate (3), clutch disc (4) and drive plate (5). 4. Press the spring retainer plate (6) lightly with clutch compression tool (8) (see page G-73) for removing the external snap ring (7).
Page 265: Disassembling Hi-Lo Shift Case (Creep Gear Case)
M105S, WSM TRANSMISSION (6) Disassembling HI-LO Shift Case (Creep Gear Case) Hi-Lo Shift Case 1. Remove the HI-LO shift case mounting screws. 2. Remove the HI-LO shift case (1) by using M6 x Pitch 1 screws into holes A and B.
Page 266: Disassembling Pto Gear Case
M105S, WSM TRANSMISSION (7) Disassembling PTO Gear Case Rear Cover Assembly 1. Remove the rear cover and PTO drive shaft as a unit. (When reassembling) 77.5 to 90.1 N·m Rear cover mounting Tightening torque 7.9 to 9.2 kgf·m screw 57.2 to 66.5 ft-lbs...
Page 267: Disassembling Differential Gear
M105S, WSM TRANSMISSION (8) Disassembling Differential Gear Shift Fork and Shift Rod 1. Remove the HI-LO shift case mounting screws. 2. Remove the HI-LO shift case (6) by M6 x Pitch 1 screws in to the holes. 3. Remove the HI-LO shift fork (3) with fork rod (2) after removing the fork rod setting screws (8).
Page 268 M105S, WSM TRANSMISSION PTO Clutch Assembly 1. Remove the bearing retainer (1). 2. Tap out the coupling (2) with bearing to the rear. 3. Remove the internal snap ring (3). 4. Remove the external snap ring (4). 5. Tap out the PTO clutch shaft (5) to the front and remove the PTO clutch assembly (6).
Page 269 M105S, WSM TRANSMISSION Differential Gear Assembly 1. Remove the differential support (1), (5), noting the number of the left and the right shims (2), (4). 2. Take out the differential gear assembly (3) from transmission case. (When reassembling) • Be sure to adjust the turning torque of spiral bevel pinion shaft and differential assembly combined.
Page 270 M105S, WSM TRANSMISSION Taper Roller Bearing 1. Place the differential cover (1) on the vise. 2. Tap out the taper roller bearing (2) from the inside of the differential cap, taking care not to damage the outer race and separator.
Page 271 M105S, WSM TRANSMISSION Spiral Bevel Pinion Shaft 1. Remove the stake of the staking nut (1). 2. Set the pinion locking tool (2) (Code No. 07916-52311). 3. Remove the staking nut (1). 4. Tap out the bevel pinion shaft (3) to the rear.
Page 272: Disassembling Rear Drive Shaft (Parking Brake Shaft)
M105S, WSM TRANSMISSION (9) Disassembling Rear Drive Shaft (Parking Brake Shaft) Rear Drive Shaft 1. Remove the parking brake case assembly (1) from transmission case. 2. Remove the bearing retainer (2), (3). 3. Tap out the rear drive shaft (4) to front.
Page 273: Servicing
M105S, WSM TRANSMISSION [3] SERVICING (1) Bearing, Shift Fork and Synchronizer Checking Bearing 1. Hold the inner race, and push and pull the outer race in all directions to check for wear and roughness. 2. Apply transmission fluid to the bearing, and hold the inner race.
Page 274: Shuttle Clutch
M105S, WSM TRANSMISSION (2) Shuttle Clutch Clearance between Internal Snap Ring and Pressure Plate 1. Measure the clearance between internal snap ring and pressure plate with a feeler gauge while applying the specified force. Specified force : 176 to 296 N (de 18 to 30 kgf, 39.6 to 66.1 lbs).
Page 275: Thrust Clearance On Shaft
M105S, WSM TRANSMISSION (3) Thrust Clearance on Shaft Checking side clearance on Main Shaft Gear 1. Measure the side clearance between thrust bearing and bearing washer. 2. If the measurement is not within the factory specifications, adjust the clearance with shim on the front end of main shaft.
Page 276: Dual Speed Clutch
M105S, WSM TRANSMISSION (4) Dual Speed Clutch Clearance between Internal Snap Ring and Pressure Plate 1. Measure the clearance between internal snap ring and pressure plate with a feeler gauge while applying the specified force. Specified force: 176 to 296 N (de 18 to 30 kgf, 39.6 to 66.1 lbs).
Page 277: Differential Gear
M105S, WSM TRANSMISSION (5) Differential Gear IMPORTANT • When reassembling spiral bevel pinion shaft and differential assembly, be sure to adjust the following. • Turning torque of spiral bevel pinion shaft only. • Turning torque of spiral bevel pinion shaft and differential assembly combined.
Page 278 M105S, WSM TRANSMISSION Turning torque of Spiral Bevel Pinion Shaft and Differential Assembly Combined 1. Reassembling the differential assembly with the left shims (2) and the right shims (1) same as before assembling. 2. Check that there is a backlash. If there is no backlash, remove a right shim (1) and add a left shim (2).
Page 279 M105S, WSM TRANSMISSION Backlash and Tooth Contact between Spiral Bevel Gear and Spiral Bevel Pinion Shaft 1. Set the dial indicator (lever type) with its finger on the tooth surface. 2. Measure the backlash by fixing the spiral bevel pinion shaft (1) and moving the spiral bevel gear (2) by hand.
Page 280 M105S, WSM TRANSMISSION • Proper Contact More than 35 % red lead contact area on the gear tooth surface. The center of tooth contact at 1/3 of the entire width from the small end. (A) Proper Contact W1049310 • Shallow or Heel Contact Replace the adjusting collar (5) with thicker one to move the spiral bevel pinion shaft backward.
Page 281 M105S, WSM TRANSMISSION Clearance between Differential Case Bore (Differential Case Cover Bore) and Differential Side Gear Boss 1. Measure the bore I.D. of the differential case and differential case cover. 2. Measure the differential side gear boss O.D. and calculate the clearance.
Page 282 M105S, WSM TRANSMISSION Backlash between Differential Pinion and Differential Side Gear 1. Set a dial indicator (lever type) on the tooth of the differential pinion. 2. Hold the differential side gear and move the differential pinion to measure the backlash.
Page 283: Rear Axle
REAR AXLE KiSC issued 03, 2007 A...
Page 284 MECHANISM CONTENTS 1. STRUCTURE ....................4-M1 KiSC issued 03, 2007 A...
Page 285 M105S, WSM REAR AXLE 1. STRUCTURE (1) Rear Axle (5) 56T Internal Gear (9) Differential Side Gear (13) Differential Lock (2) Rear Axle Case (6) 21T Planetary Gear (10) Differential Pinion Gear (14) Brake Case (3) Planetary Gear Support (7) Differential Lock Shift Fork...
Page 286 SERVICING CONTENTS 1. TROUBLESHOOTING ..................4-S1 2. SERVICING SPECIFICATIONS ..............4-S2 3. TIGHTENING TORQUES ................4-S3 4. CHECKING, DISASSEMBLING AND SERVICING........4-S4 [1] DISASSEMBLING AND ASSEMBLING..........4-S4 (1) Separating Rear Axle Case from Transmission ........4-S4 (2) Disassembling Rear Axle Case ............4-S7 [2] SERVICING ....................4-S9 KiSC issued 03, 2007 A...
Page 287: Troubleshooting
M105S, WSM REAR AXLE 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Excessive or Improper backlash between brake shaft's 12T Replace 4-S9 Unusual Noise at All gear and planetary gear Time Improper backlash between planetary gear and Replace 4-S9 internal gear...
Page 288: Servicing Specifications
M105S, WSM REAR AXLE 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Internal Gear to Planetary Gear Backlash 0.10 to 0.20 mm 0.5 mm 0.0039 to 0.0079 in. 0.020 in. Planetary Gear Thrust Collar Thickness 1.55 to 1.65 mm 1.2 mm 0.0610 to 0.0650 in.
Page 289 M105S, WSM REAR AXLE 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts : See page G-10.) Item N·m kgf·m ft-lbs Rear wheel mounting nut 343 to 401 35.0 to 41.0...
Page 290: Checking, Disassembling And Servicing
Transmission fluid 63.4 U.S.qts. 52.8 Imp.qts. IMPORTANT • Use only KUBOTA SUPER UDT fluid. Use of other oil may damage the transmission or hydraulic system. • Refer to “LUBRICANTS, FUEL AND COOLANT” (See page G-8.) • Do not mixed different brands fluid together.
Page 291 M105S, WSM REAR AXLE Rear Wheel and 3-Points Hitch 1. Set the front axle rocking restrictor (See page G-72) (1) to the front axle. 2. Place the disassembling stand under the transmission case. 3. Remove the rear wheel (2). 4. Remove the lifting rod (3) and the lower link (4) with the stabilizer (5).
Page 292 M105S, WSM REAR AXLE Cabin Mount Bracket Rear 1. Remove the cabin mounting screw and nut (1). 2. Hoist the cabin. 3. Remove the stabilizer bracket (2). 4. Raise the cabin until the rear bracket becomes free to move. 5. Remove the rear bracket (3).
Page 293: Disassembling Rear Axle Case
M105S, WSM REAR AXLE (2) Disassembling Rear Axle Case Planetary Gear Support 1. Remove the planetary gear support mounting UBS screw (1). 2. Remove the planetary gear support (2). (When reassembling) 90.0 to 104.0 N·m Planetary gear support Tightening torque 9.2 to 10.6 kgf·m...
Page 294 M105S, WSM REAR AXLE Rear Axle Nut 1. Fix the rear axle on the repair table or set to the rear wheel. 2. Remove the stake on the rear axle nut. 3. Remove the rear axle nut with a rear axle nut wrench 98 (Code No.
Page 295: Servicing
M105S, WSM REAR AXLE [2] SERVICING Backlash between Internal Gear and Planetary Gear 1. Set a dial indicator (lever type) on the tooth of the planetary gear. 2. Hold the planetary gear support and move only the planetary gear to measure the backlash.
Page 296 BRAKES KiSC issued 03, 2007 A...
Page 297 MECHANISM CONTENTS 1. FEATURE ...................... 5-M1 [1] TRAVELING AND PARKING BRAKE........... 5-M1 KiSC issued 03, 2007 A...
Page 298 M105S, WSM BRAKES 1. FEATURE [1] TRAVELING AND PARKING BRAKE The travelling brake is a hydraulic wet disc type, which consists of the master cylinder (4), equalizer (6), brake pipe (2), brake oil reservoir (5) and others. This type provides high and stable braking effect and requires almost no adjustment.
Page 299 SERVICING CONTENTS 1. TROUBLESHOOTING ..................5-S1 2. SERVICING SPECIFICATIONS ..............5-S2 3. TIGHTENING TORQUES ................5-S4 4. CHECKING, DISASSEMBLING AND SERVICING........5-S5 [1] CHECKING AND ADJUSTING ...............5-S5 [2] DISASSEMBLING AND ASSEMBLING..........5-S10 (1) Removing Brake Pedal ..............5-S10 (2) Removing Master Cylinder and Equalizer.........5-S11 (3) Removing Brake Case ..............5-S13 (4) Removing Parking Brake Case............5-S16 [3] SERVICING ....................5-S18 KiSC issued 03, 2007 A...
Page 300: Troubleshooting
M105S, WSM BRAKES 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Poor Braking Force Brake pedal free travel excessive Adjust 5-S5 Brake disc worn Replace 5-S16 Brake piston warped Replace 5-S16 Brake oil insufficient or improper Replenish or change with specified oil...
Page 301: Servicing Specifications
M105S, WSM BRAKES 2. SERVICING SPECIFICATIONS TRAVELING BRAKE Item Factory Specification Allowable Limit Brake Pedal Play 7 to 14 mm – 0.28 to 0.55 in. Right and Left Less than 100 mm – (Stroke) 3.9 in. Difference 0 to 5 mm –...
Page 302 M105S, WSM BRAKES PARKING BRAKE Item Factory Specification Allowable Limit Parking Brake Lever Lever Travel 2 notches – (Number of notches) Brake Pad Thickness 2.20 mm 1.95 mm [Pad 1] 0.0866 in. 0.0768 in. Thickness 2.80 mm 2.30 mm [Pad 2] 0.1102 in.
Page 303 M105S, WSM BRAKES 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts : See page G-10.) Item N·m kgf·m ft-lbs Front brake pipe lock nut 16.0 to 24.0...
Page 304: Checking, Disassembling And Servicing
M105S, WSM BRAKES 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING Adjusting Brake Pedal 1) Brake Pedal Free Travel CAUTION • When checking, parking the tractor on flat ground, and stop the engine. 1. Measure the free travel by depressing the brake pedals.
Page 305 M105S, WSM BRAKES 3) Equalizer Working Level 1. Gently step on both the right and left pedals at once with your both feet. Step on the right pedal all the way (the left pedal rises). Measure the level difference between the two pedals.
Page 306 M105S, WSM BRAKES Brake Oil Level Switch 1. See page 9-S38. W1013715 Brake Test 1. Remove the bleeder from brake case and set the hydraulic brake adaptor (Code No. 07916-52970) (1), joint (Code No. 07916- 50401) (2), cable (Code No. 07916-50331) (3) and pressure gauge (Code No.
Page 307 M105S, WSM BRAKES Bleeding Brake System NOTE • While bleeding, make sure to keep enough brake oil in the brake oil reservoir. 1. Disconnect the brake pipes (1) from the master cylinder. 2. Move the brake pedal up and down by hand. At this time, when raising the pedal, close the master cylinder outlet by a finger, and when lowering, release the finger.
Page 308 M105S, WSM BRAKES Adjusting Parking Brake Lever Free Play 1. Release the parking brake lever. 2. Pull the parking brake lever with a force of 30 kg (66.2 lbs) for checking the free play and check the number of notches (A).
Page 309: Disassembling And Assembling
M105S, WSM BRAKES [2] DISASSEMBLING AND ASSEMBLING (1) Removing Brake Pedal Brake Pedal 1. Remove the meter panel. 2. Remove the bonnet rear. 3. Remove the brake pedal return spring and clevis pin from the turnbuckle of master cylinder. 4. Remove the circlip (4) and spring pin (5) and draw out the brake pedal shaft (1), then remove the left and right brake pedal (2), (3).
Page 310: Removing Master Cylinder And Equalizer
M105S, WSM BRAKES (2) Removing Master Cylinder and Equalizer Removing Master Cylinder and Equalizer Precaution of Disassembling and Assembling for Hydraulic Brake • Wash all parts with clean brake oil (Refer to see page G-8). • Before assembling the cylinder cups and O-rings, immerse them in clean brake oil or apply silicon grease to them.
Page 311 M105S, WSM BRAKES Master Cylinder 1. Drain the brake oil from the master cylinder. 2. Secure the master cylinder in a vise. Remove the push rod (3) and boot (4) as a unit from the master cylinder. 3. Remove the internal snap ring (5), and pull out the piston (6), return spring (7) and outlet valve (8).
Page 312: Removing Brake Case
Transmission fluid 63.4 U.S.qts. 52.8 Imp.qts. IMPORTANT • Use only KUBOTA SUPER UDT fluid. Use of other oil may damage the transmission or hydraulic system. • Refer to “LUBRICANTS, FUEL AND COOLANT” (See page G-8.) • Do not mixed different brands fluid together.
Page 313 M105S, WSM BRAKES Rear Wheel and 3-Points Hitch 1. Set the front axle rocking restrictor (See page G-72) (1) to the front axle. 2. Place the disassembling stand under the transmission case. 3. Remove the rear wheel (2). 4. Remove the lifting rod (3) and lower link (4) with stabilizer (5).
Page 314 M105S, WSM BRAKES Cabin Mount Bracket Rear 1. Remove the cabin mounting screw and nut (1). 2. Hoist the cabin. 3. Remove the stabilizer bracket (2). 4. Raise the cabin until the rear bracket becomes free to move. 5. Remove the rear bracket (3).
Page 315: Removing Parking Brake Case
M105S, WSM BRAKES Brake Case 1. Draw out the brake shaft (1) with brake discs (6) and plates (3). 2. Remove the external snap ring (2) and remove the brake discs and plates. 3. Remove the brake piston (7) from the brake case (8) with compressed air.
Page 316 M105S, WSM BRAKES Parking Brake Case Assembly 1. Set the front axle rocking restrictor (1) (See page G-72) to the front axle. 2. Place the disassembling stand under the transmission case. 3. Remove the rear wheel RH. 4. Remove the fuel tank RH (2).
Page 317: Servicing
M105S, WSM BRAKES Parking Brake Pad 1. Remove the E snap ring (1), and put out the parking brake camshaft (2) and parking brake cam (3). 2. Straighten the lock plate (4) and loosen the nut (5). 3. Remove the parking brake pads.
Page 318 M105S, WSM BRAKES Brake Disc Wear 1. Measure the brake disc thickness with a vernier caliper. 2. If the measurement is less than the allowable limit, replace it. 4.15 to 4.35 mm Factory spec. 0.1634 to 0.1713 in. Brake disc wear 3.3 mm...
Page 319: Front Axle
FRONT AXLE KiSC issued 03, 2007 A...
Page 320 MECHANISM CONTENTS 1. STRUCTURE ....................6-M1 [1] 4-WHEEL DRIVE TYPE................. 6-M2 KiSC issued 03, 2007 A...
Page 321 M105S, WSM FRONT AXLE 1. STRUCTURE The front axle supports the front of tractor and facilitates steering. NOTE • Refer to “6. FRONT AXLE” section in the workshop manual of tractor mechanism (Code No. 97897-18200). [1] 4-WHEEL DRIVE TYPE (1) Front Axle...
Page 322 SERVICING CONTENTS 1. TROUBLESHOOTING ..................6-S1 2. SERVICING SPECIFICATIONS ..............6-S2 3. TIGHTENING TORQUES ................6-S4 4. CHECKING, DISASSEMBLING AND SERVICING........6-S5 [1] CHECKING AND ADJUSTING ...............6-S5 [2] DISASSEMBLING AND ASSEMBLING..........6-S7 (1) Separating Front Axle .................6-S7 (2) Disassembling Front Axle ..............6-S11 [3] SERVICING ....................6-S18 KiSC issued 03, 2007 A...
Page 323: Troubleshooting
M105S, WSM FRONT AXLE 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Front Wheels Tire pressure uneven Adjust G-77 Wander to Right or Improper toe-in adjustment (improper alignment) Adjust 6-S5 Left Clearance between front axle case boss and Replace 6-S20...
Page 324: Servicing Specifications
M105S, WSM FRONT AXLE 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Front Wheel Alignment Toe-in 2.0 to 8.0 mm – 0.078 to 0.315 in. Front Wheel Axle Sway 5.0 mm – 0.197 in. Steering Angle 0.840 to 0.873 rad –...
Page 325 M105S, WSM FRONT AXLE Item Factory Specification Allowable Limit Thrust Collar Thickness 1.55 to 1.65 mm 1.0 mm 0.0610 to 0.0650 in. 0.039 in. W1011456 KiSC issued 03, 2007 A 6-S3...
Page 326 M105S, WSM FRONT AXLE 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts : See page G-10) Item N·m kgf·m ft-lbs Front axle pivot adjusting screw 19.6 to 29.4...
Page 327: Checking, Disassembling And Servicing
M105S, WSM FRONT AXLE 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING Adjusting Toe-in 1. Park tractor on a flat place. 2. Turn steering wheel so that front wheels are in the straight ahead position. 3. Lower the implement, lock the park brake and stop the engine.
Page 328 M105S, WSM FRONT AXLE Adjusting Front Axle Pivot 1. Jack up the tractor body, then loosen the lock nut (2). 2. Measure the adjusting screw tightening torque. 3. If tightening torque is not within the factory specifications, adjust the adjusting screw (1).
Page 329: Disassembling And Assembling
M105S, WSM FRONT AXLE Front Wheel Steering Angle 1. Inflate the tires to the specified pressure. 2. Adjust turning angle with the stopper bolts table below. 3. The right side is similarly adjusted. IMPORTANT • Always check if tires contact with tractor or loader frame assemblies.
Page 330 M105S, WSM FRONT AXLE Draining Front Axle Gear Case Oil 1. To drain the used oil, remove the right and left drain plugs (2) and filling plugs (1) at the front axle gear case and drain the oil completely into the oil pan.
Page 331 M105S, WSM FRONT AXLE Front Wheel and Power Steering Hoses 1. Check the front axle and engine are securely mounted on the disassembly stand. 2. Loosen the front wheel mounting nuts. 3. Lift the front axle and remove the front wheels.
Page 332 M105S, WSM FRONT AXLE Front Axle 1. Place a disassembling stand under the front axle bracket and support it with jack. 2. Hoist and hold the front axle with nylon slings. 3. Loosen the lock nut (1) and remove the spring (2) from differential lock lever (3).
Page 333: Disassembling Front Axle
M105S, WSM FRONT AXLE (2) Disassembling Front Axle Tie-rod 1. Pull out the cotter pin and remove the tie-rod end slotted nuts. 2. Remove the tie-rod with a tie-rod end lifter (Code No. 07909- 39051). (When reassembling) • Replace cotter pin with a new one.
Page 334 M105S, WSM FRONT AXLE Bevel Gear Case 1. Separate the bevel gear case (3) from front wheel case (4). 2. Remove the front wheel case support (1). 3. Loosen the bearing retainer (2) mounting screws. 4. Remove the bearing retainer (2) by screwing M8 screw into holes A and B.
Page 335 M105S, WSM FRONT AXLE Front Wheel Case 1. Remove the internal snap ring (13). 2. Remove the cap (12) which is installed in the bottom of front wheel case. 3. Remove the internal snap ring (11) and take out the adjusting shims (10).
Page 336 M105S, WSM FRONT AXLE Planetary Gear 1. Remove the external snap ring (1). 2. Remove the planetary gear support assembly. 3. Tap the spring pin (6) into the planetary gear shaft (5). 4. Draw out the planetary gear shaft (5), and remove the planetary gear (3).
Page 337 M105S, WSM FRONT AXLE Bevel Gear and Differential Yoke Shaft 1. Remove the bevel gear (5), bearing (4) and differential yoke shaft (3) as a unit from the differential case (1). 2. Remove the external snap ring (6) and remove the bevel gear (5).
Page 338 M105S, WSM FRONT AXLE Differential Assembly 1. Remove the plug (2), and tap out the spring pin (3). 2. Draw out the differential lock lever shaft (1). 3. Remove the differential lock lever (4). 4. Remove the bearing support 1 (7) and shim (8) and differential lock clutch 2 (9).
Page 339 M105S, WSM FRONT AXLE Spiral Bevel Gear 1. Remove the spiral bevel gear UBS screws. 2. Tap out the spiral bevel gear (2) from the differential gear case. (When reassembling) • Apply lock tight (Three Bond 1324B or equivalent) to the spiral bevel gear UBS screws.
Page 340: Servicing
M105S, WSM FRONT AXLE [3] SERVICING Backlash and Tooth Contact between Bevel Pinion Shaft and Bevel Gear 1. Set a dial indicator (lever type) with its finger on the tooth surface. 2. Measure the backlash by fixing the bevel pinion shaft (5) and moving the bevel gear (3) by hand.
Page 341 M105S, WSM FRONT AXLE Clearance between Differential Case and Differential Side Gear 1. Measure the differential side gear boss O.D.. 2. Measure the differential case bore I.D., and calculate the clearance. 3. If the clearance exceeds the allowable limit, replace it.
Page 342 M105S, WSM FRONT AXLE Front Bracket and Rear Bracket Bushing 1. Visually inspect the DX bushing for signs of wear or damage. (The DX bushing tends to show concentrated wear.) 2. If the DX bushing is worn beyond the alloy portion (A), replace it.
Page 343 M105S, WSM FRONT AXLE Bevel Gear Case and Front Wheel Case Bushing 1. Visually inspect the DX bushing for signs of wear or damage. (The DX bushing tends to show concentrated wear.) 2. If the DX bushing is worn beyond the alloy portion (A), replace it.
Page 344 M105S, WSM FRONT AXLE Backlash between Internal Gear and Planetary Gear 1. Set a dial indicator (lever type) on the tooth of the planetary gear. 2. Hold the planetary gear support and move only the planetary gear. 3. If the measurement exceeds the allowable limit, check the planetary gear and planetary shaft.
Page 345 M105S, WSM FRONT AXLE Backlash of Bevel Gear in Front Wheel Case 1. Set a dial indicator (lever type) on the shaft (Kingpin). 2. Move the shaft (Kingpin) by hand and measure the circumferential play of the shaft. 3. Calculate the backlash from the ratio of the shaft diameter to the gear diameter.
Page 346 STEERING KiSC issued 03, 2007 A...
Page 347 MECHANISM CONTENTS 1. STRUCTURE ....................7-M1 [1] STEERING MECHANISM............... 7-M1 KiSC issued 03, 2007 A...
Page 348 M105S, WSM STEERING 1. STRUCTURE [1] STEERING MECHANISM This model is provided with a full hydrostatic power steering. Generally power steerings are divided into 4 types: booster type, integral type, semi-integral type and full hydrostatic type. In the full hydrostatic power steering, the steering controller is connected to the steering cylinder with only the hydraulic pipe.
Page 349 SERVICING CONTENTS 1. TROUBLESHOOTING ..................7-S1 2. TIGHTENING TORQUES ................7-S2 3. CHECKING, DISASSEMBLING AND SERVICING........7-S3 [1] CHECKING AND ADJUSTING ...............7-S3 [2] DISASSEMBLING AND ASSEMBLING..........7-S3 (1) Removing Steering Controller .............7-S3 (2) Removing Steering Cylinder ...............7-S4 KiSC issued 03, 2007 A...
Page 350: Troubleshooting
M105S, WSM STEERING 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Tractor Cannot Be Drive shaft in the steering controller improperly Reassemble 8-S26 Steered assembled Turning delivery hose damaged Replace 7-S4 Hard Steering Oil improper Change with specified oil Hydraulic pump malfunctioning...
Page 351 M105S, WSM STEERING 2. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts : See page G-10.) Item N·m kgf·m ft-lbs Main delivery pipe and return pipe retaining nut 47.1 to 51.0...
Page 352: Checking, Disassembling And Servicing
M105S, WSM STEERING 3. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING • Refer to checking “Steering Controller” in “8. HYDRAULIC SYSTEM” section. [2] DISASSEMBLING AND ASSEMBLING (1) Removing Steering Controller Bonnet and Muffler Pipe 1. Remove the bonnet (1).
Page 353: Removing Steering Cylinder
M105S, WSM STEERING (2) Removing Steering Cylinder Tie-rod 1. Pull out the cotter pin and remove the tie-rod end slotted nuts. 2. Remove the tie-rod with a tie-rod end lifter (Code No. 07909- 39051). (When reassembling) • Replace cotter pin with a new one.
Page 354: Hydraulic System
HYDRAULIC SYSTEM KiSC issued 03, 2007 A...
Page 355 MECHANISM CONTENTS 1. STRUCTURE ....................8-M1 2. HYDRUALIC CIRCUIT .................. 8-M3 3. HYDRAULIC SHUTTLE VALVE ..............8-M4 [1] STRUCTURE ................... 8-M4 [2] OPERATION .................... 8-M6 4. REGULATOR VALVE ................. 8-M16 [1] STRUCTURE AND OIL FLOW ............8-M16 5. PTO CLUCH ....................8-M18 6.
Page 356: Structure
(7) Hydraulic Pump (for 3P Hitch) (11) PTO Valve The hydraulic system of M105S tractor is composed of three point hitch, remote hydraulic control for implements, power steering, PTO clutch, shuttle clutch, swing shift, dual speed and trailer brake shown above.
Page 357 M105S, WSM HYDRAULIC SYSTEM 6. To operate swing shift HI-LO. The swing shift (HI-LO) is controlled by the combination of solenoid valve and hydraulic flow. Two ways of power train are available low speed range and high speed range of travelling speed.
Page 358: Hydrualic Circuit
M105S, WSM HYDRAULIC SYSTEM 2. HYDRUALIC CIRCUIT (1) Auxiliary Control Valve (8) Hydraulic Oil Filter Cartridge (13) Hydraulic Cylinder (20) Pump Base (2) Control Valve for 3P (9) Hydraulic Pump (for 3P) (14) Regulator Valve (21) Solenoid Valve (3) Power Steering Controller...
Page 359: Hydraulic Shuttle Valve
M105S, WSM HYDRAULIC SYSTEM 3. HYDRAULIC SHUTTLE VALVE [1] STRUCTURE (1) Shuttle Valve (7) Inching Valve Spool (c) Shuttle Forward Position B : Pressure Check Port (2) Accumulate Valve (8) Modulating Valve (d) Shuttle Neutral Position (Reverse) (3) Shuttle Shift Spool (Forward,...
Page 360: Regulator Valve
M105S, WSM HYDRAULIC SYSTEM (1) Power Steering Controller (4) Proportionally Reducing Valve (9) Regulator Valve (12) Shuttle Clutch R (2) Modulation Valve (5) Accumulate Valve (10) Pump Base (13) Shuttle Clutch F (3) Shuttle Shift Spool (Forward, (6) Shuttle Valve...
Page 361 M105S, WSM HYDRAULIC SYSTEM [2] OPERATION Shuttle Lever at Neutral Position KiSC issued 03, 2007 A 8-M6...
Page 362 M105S, WSM HYDRAULIC SYSTEM (1) Modulating Valve (5) Shuttle Valve A : Check Port (Modulation) T1 to T5: To Transmission Case (2) Proportionally Reducing Valve (6) Inching Valve B : Check Port (Reverse) N1 : Port N1 (3) Shuttle Shift Spool (Forward,...
Page 363 M105S, WSM HYDRAULIC SYSTEM When Shuttle Lever is Shifting Neutral to Reverse or Forward Position (Clutch Pedal is Released) KiSC issued 03, 2007 A 8-M8...
Page 364 M105S, WSM HYDRAULIC SYSTEM (1) Modulating Valve (5) Shuttle Valve A : Check Port (Modulation) T1 to T5: To Transmission Case (2) Proportionally Reducing Valve (6) Inching Valve B : Check Port (Reverse) N1 : Port N1 (3) Shuttle Shift Spool (Forward,...
Page 365 M105S, WSM HYDRAULIC SYSTEM Shuttle Lever at Reverse Position (Clutch Pedal is Released) KiSC issued 03, 2007 A 8-M10...
Page 366 M105S, WSM HYDRAULIC SYSTEM (1) Modulating Valve (5) Shuttle Valve A : Check Port (Modulation) T1 to T5: To Transmission Case (2) Proportionally Reducing Valve (6) Inching Valve B : Check Port (Reverse) N1 : Port N1 (3) Shuttle Shift Spool (Forward,...
Page 367 M105S, WSM HYDRAULIC SYSTEM Shuttle Lever at Forward Position (Clutch Pedal is Released) KiSC issued 03, 2007 A 8-M12...
Page 368 M105S, WSM HYDRAULIC SYSTEM (1) Modulating Valve (5) Shuttle Valve A : Check Port (Modulation) T1 to T5: To Transmission Case (2) Proportionally Reducing Valve (6) Inching Valve B : Check Port (Reverse) N1 : Port N1 (3) Shuttle Shift Spool (Forward,...
Page 369 M105S, WSM HYDRAULIC SYSTEM When Clutch Pedal is Depressed (with Shuttle Lever at Reverse or Forward Position) KiSC issued 03, 2007 A 8-M14...
Page 370 M105S, WSM HYDRAULIC SYSTEM (1) Modulating Valve (6) Inching Valve D : Check Port (Pump) a : Connect to Shuttle Lever (2) Proportionally Reducing Valve (7) Shuttle Lever P : From Regulator Valve b : Connect to Clutch Pedal (3) Shuttle Shift Spool (Forward,...
Page 371: Structure And Oil Flow
M105S, WSM HYDRAULIC SYSTEM 4. REGULATOR VALVE [1] STRUCTURE AND OIL FLOW (1) Flow Priority Valve (5) Charge Relief Valve Adjusting A : From Hydraulic Pump E : To Power Steering Controller (2) Charge Relief Valve (Power Screw B : To Shuttle Clutch Pack for...
Page 372 M105S, WSM HYDRAULIC SYSTEM Sectional view of the regulator valve and its hydraulic circuit are shown in the figure above. This valve has three functions following. 1. Flow priority valve (1) The flow priority valve is a flow divider that divides the flow single hydraulic source (hydraulic pump) and actuates the power steering, PTO clutch and shuttle clutch simultaneously.
Page 373: Pto Cluch
M105S, WSM HYDRAULIC SYSTEM 5. PTO CLUCH PTO Valve This valve change the oil flow to PTO clutch. This is rotated by the PTO operation lever via to PTO clutch cable. The oil from the regulator valve passes through orifice (1) and flow to the PTO clutch.
Page 374: Dual Speed Valve
M105S, WSM HYDRAULIC SYSTEM 6. DUAL SPEED VALVE This valve change the oil flow to the dual speed HI clutch or LO clutch. As the pilot valve DS (8) operates by energizing the solenoid valve (4), the flow of oil is switched to the HI side or LO side of dual speed clutch with DS spool (5).
Page 375: Hydraulic Trailer Brake
M105S, WSM HYDRAULIC SYSTEM 7. HYDRAULIC TRAILER BRAKE [1] HYDRAULIC CIRCUIT 1. When the brake pedal (1) is depressed, the brake oil is pressurized with brake master cylinder (2) connected with the brake pedal. Then, the trailer brake valve (3) is operated with the pressurized brake oil.
Page 376: Trailer Brake Valve
M105S, WSM HYDRAULIC SYSTEM [2] TRAILER BRAKE VALVE Main Elements • Flow control valve (10) with throttle (9) and restrictor (11) : for controlling the delivery flow Qp and for regulating the fluid flow for the trailer brake. • Control spool (2) with piston surface (1) : for controlling the flow control valve (10) and regulating the trailer braking pressure.
Page 377: Operation
M105S, WSM HYDRAULIC SYSTEM [3] OPERATION Tractor Brake Released The tractor service brake line X is pressureless. The brake line B is relieved to the reservoir through the control spool (2) and port R. The delivery flow Qp of the pump flows from port P past flow control valve (10), the flow Qp - Qx continues through port N to the tractor hydraulics.
Page 378 M105S, WSM HYDRAULIC SYSTEM Partial Braking of Trailer Brake - Initiation Piston (7) of control head (6) is pressurized through control line X from the tractor service brake. Control spool (2) is thus shifted to the left and separates from the reservoir first brake line B and then bore (8).
Page 379 M105S, WSM HYDRAULIC SYSTEM Partial Braking of Trailer Brake The trailer braking pressure Pb (acting on surface (1) of control spool (2)) is in equilibrium with the tractor braking pressure Px (acting on piston (7)). The brake line B remains separated from the reservoir and the oil in the trailer brake is thus enclosed.
Page 380 M105S, WSM HYDRAULIC SYSTEM Maximum Braking of Trailer Brake - Braking Pressure Limited Flow control valve (10) and control spool (2) have the same spool positions (a and d) as in the case of partial braking. The fluid flows Qp and Qx pass as with partial braking.
Page 381: Power Steering Hydraulic Circuit
M105S, WSM HYDRAULIC SYSTEM 8. POWER STEERING HYDRAULIC CIRCUIT The power steering is hull hydraulic type (controller code No. 3A111-63072). When the engine starts, the hydraulic pump (1) of the power steering system pressure-feeds the oil drawn from the transmission case through the suction pipe.
Page 382: Three-Point Hydraulic System
M105S, WSM HYDRAULIC SYSTEM 9. THREE-POINT HYDRAULIC SYSTEM [1] HYDRAULIC CIRCUIT (1) Oil Tank (Transmission Case) (2) Hydraulic Oil Filter Cartridge (3) Hydraulic Pump (4) Auxiliary Control Valve (5) Control Valve (6) Relief Valve (7) Lowering Speed Adjusting Valve (8) Hydraulic Cylinder...
Page 383 M105S, WSM HYDRAULIC SYSTEM [2] CONTROL VALVE Neutral Pressurized oil from the P port, pushes and opens unload poppet 1 (4) and returns to tank from T1 port. The oil in the chamber A behind the unload poppet 1 (4) returns to the tank through the E of spool (3) and control valve body.
Page 384 M105S, WSM HYDRAULIC SYSTEM Lifting Neutral (Acting shockless mechanism) In returning from Lifting to Neutral, the spool (3) is pushed back to the arrow-mark direction. When the Neutral position comes near, the groove part D of the spool (3) makes the pressure difference at the P port and C port.
Page 385: Position Control
M105S, WSM HYDRAULIC SYSTEM [3] POSITION CONTROL Position control is a system to raise and lower the implement proportionally to the movement of the position control lever. With this system, the implement can be raised or lowered to any position desired by changing the position of the control lever and fine adjustment is also easy.
Page 386: Draft Control
M105S, WSM HYDRAULIC SYSTEM [4] DRAFT CONTROL Draft control is a system in which the lift arms (implement) automatically rise when the implement's traction load is increased and lower when the traction load is decreased. By maintaining a constant traction load, it prevents the tractor from slipping and over-load.
Page 387: Mixed Control
M105S, WSM HYDRAULIC SYSTEM [5] MIXED CONTROL Mixed control is a system combining position control with draft control. When traction load increases, the draft control functions to raise the lift arms (implement). When traction load reduces, the lift arms (implement) lower to...
Page 388 SERVICING CONTENTS 1. TROUBLESHOOTING ..................8-S1 2. SERVICING SPECIFICATIONS ..............8-S3 3. TIGHTENING TORQUES ................8-S6 4. CHECKING, DISASSEMBLING AND SERVICING........8-S7 [1] CHECKING AND ADJUSTING ...............8-S7 (1) Hydraulic Pump for Power Steering............8-S7 (2) Hydraulic Pump for Three-Point Hitch ..........8-S9 (3) Hydraulic Shuttle System Operating Pressure........8-S11 (4) PTO Clutch Operating Pressure ............8-S12 (5) Dual Speed Operating Pressure ............8-S13 (6) Trailer Brake Operating Pressure .............8-S14...
Page 389 M105S, WSM HYDRAULIC SYSTEM 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Implement Does Not Control linkage improperly assembled or Repair or replace 8-S19 Rise (Not Noise) damaged Control valve malfunctioning (unload valve, Repair or replace 8-S30 spool, check valve, poppet valve)
Page 390 M105S, WSM HYDRAULIC SYSTEM Reference Symptom Probable Cause Solution Page Draft Control Draft control linkage improperly adjusted Adjust 8-S21 Malfunctioning Torsion bar weak or broken Replace 8-S22 W1010986 KiSC issued 03, 2007 A 8-S2...
Page 391: Servicing Specifications
M105S, WSM HYDRAULIC SYSTEM 2. SERVICING SPECIFICATIONS HYDRAULIC PUMP FOR POWER STEERING Item Factory Specification Allowable Limit Hydraulic Pump Delivery Above 39.1 L/min. 48.9 L/min. 10.3 U.S.gals./min. 12.9 U.S.gals./min. 8.6 Imp.gals./min. 10.8 Imp.gals./min. Housing Bore Depth of Scratch – 0.09 mm 0.0035 in.
Page 392 M105S, WSM HYDRAULIC SYSTEM STEERING CONTROLLER Item Factory Specification Allowable Limit Relief Valve Setting Pressure At Idling Engine Above 15.5 MPa – Speed 158 kgf/cm 2247 psi At Maximum Below 16.5 MPa – Engine Speed 168 kgf/cm 2390 psi W1012805...
Page 393 M105S, WSM HYDRAULIC SYSTEM CYLINDER SAFETY VALVE Item Factory Specification Allowable Limit Cylinder Safety Valve Operating 23.1 to 24.5 MPa – Pressure 235 to 250 kgf/cm 3342 to 3356 psi W1013973 HYDRAULIC CYLINDER Cylinder Bore I.D. 100.036 to 100.071 mm 100.15 mm...
Page 394 M105S, WSM HYDRAULIC SYSTEM 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts : See page G-10.) Item N·m kgf·m ft-lbs Cylinder safety valve assembly 39.2 to 49.0...
Page 395: Checking, Disassembling And Servicing
[1] CHECKING AND ADJUSTING (1) Hydraulic Pump for Power Steering Hydraulic Flow Test IMPORTANT • When using flowmeter other than KUBOTA specified flowmeter, be sure to use the instructions with the flowmeter. • Do not close the flowmeter loading valve completely, before testing, because it has no relief valve.
Page 396 M105S, WSM HYDRAULIC SYSTEM Hydraulic Flow Test (Continued) Condition • Engine speed : Approx. 2600 min (rpm) • Rated pressure : 16.5 MPa 168 kgf/cm 2390 psi • Oil temperature : 45 to 55 °C 113 to 131 °F 48.9 L/min.
Page 397: Hydraulic Pump For Three-Point Hitch
HYDRAULIC SYSTEM (2) Hydraulic Pump for Three-Point Hitch Hydraulic Flow Test IMPORTANT • When using flowmeter other than KUBOTA specified flowmeter, be sure to use the instructions with the flowmeter. • Do not close the flowmeter loading valve completely, before testing, because it has no relief valve.
Page 398 M105S, WSM HYDRAULIC SYSTEM Hydraulic Flow Test (Continued) Condition • Engine speed ..... Approx. 2600 min (rpm) • Rated pressure ..18.6 MPa (190 kgf/cm , 2702 psi) • Oil temperature ..45 to 55 °C 113 to 131 °F 66.6 L/min...
Page 399: Hydraulic Shuttle System Operating Pressure
M105S, WSM HYDRAULIC SYSTEM (3) Hydraulic Shuttle System Operating Pressure Checking of Shuttle Valve System Pressure 1. Remove the floor mat and inspection plate under the mat. 2. Remove the each plugs of F, R, M and set the adaptor D (1), threaded joint (4), cable (3), and pressure gauge (Code No.:...
Page 400: Pto Clutch Operating Pressure
M105S, WSM HYDRAULIC SYSTEM (4) PTO Clutch Operating Pressure Relief Valve Setting Pressure 1. Start the engine and warm up the transmission fluid, and then stop the engine. 2. Remove the plug (4) (PT 1/8) on the PTO valve spool (5).
Page 401: Dual Speed Operating Pressure
M105S, WSM HYDRAULIC SYSTEM (5) Dual Speed Operating Pressure Relief Valve Setting Pressure 1. Starting the engine and warm up the transmission fluid, and then stop the engine. 2. Remove the each plugs of A, B, C, D and set the adaptor (PT 1/ 8) (use the oil pressure tester for diesel engine : Code No.
Page 402: Trailer Brake Operating Pressure
M105S, WSM HYDRAULIC SYSTEM (6) Trailer Brake Operating Pressure Checking Brake Pressure 1. Remove the trailer brake coupler (5), and set the hydraulic brake adaptor (3), joint (Code No. 07616-50401), cable (2) (Code No. 07916-50331) and pressure gauge (1) (Code No. 07916-50321).
Page 403: Power Steering Operating Pressure
M105S, WSM HYDRAULIC SYSTEM (7) Power Steering Operating Pressure Steering Regulator Valve Setting Pressure 1. Disconnect the power steering delivery hose (1) at P port (5) on the steering controller (8) and set a pressure gauge (2) (Code No. 07916-50321) between them with using power steering adaptor (3) (Code No.
Page 404 M105S, WSM HYDRAULIC SYSTEM Power Steering Relief Valve Setting Pressure 1. Disconnect the power steering hose from P port (5) on the steering controller (6) and set a pressure gauge (3) (Code No. 07916-50321) between them using power steering adaptor (1) (Code No.
Page 405: Three-Point Hitch System (Relief Valve And Safety Valve) Operating System
M105S, WSM HYDRAULIC SYSTEM (8) Three-Point Hitch System (Relief Valve and Safety Valve) Operating System Relief Valve Setting Pressure Test Using Pressure Tester (Coupler) 1. Set the relief valve set pressure adaptor G (Code No. 07916- 52751) to the half male of the quick coupler and then set a pressure gauge (Code No.
Page 406 M105S, WSM HYDRAULIC SYSTEM Safety Valve Setting Pressure Test Using Injection Nozzle Tester 1. Remove the cylinder safety valve assembly (1). 2. Attach the cylinder safety valve to an injection nozzle tester with a safety valve setting adaptor. (See page G-68.) 3.
Page 407: Three-Point Hitch Control Linkage
M105S, WSM HYDRAULIC SYSTEM (9) Three-Point Hitch Control Linkage Adjusting the Position Rod and Draft Rod 1. Be sure to adjust the position rod length A and draft rod length B. Position rod length A 369 mm Factory spec. and draft rod length B 14.53 in.
Page 408 M105S, WSM HYDRAULIC SYSTEM Adjusting Position Control Lever 1. Attach a weight of approx. 490 N (50 kgf, 110 lbs) to the end of the lower links. 2. Start the engine and set the speed at 1000 min (rpm). 3. Move the draft control lever (2) all the way down and shift the position control lever (1) downward by approx.
Page 409 M105S, WSM HYDRAULIC SYSTEM Adjusting Draft Control Rod 1. Attach a weight of approx. 490 N (50 kgf, 110 lbs) to the end of the lower links. 2. Start the engine and set the speed at 1000 min (rpm). 3. Move the position control lever and draft control lever (1) all the way down.
Page 410 M105S, WSM HYDRAULIC SYSTEM Adjusting Top Link Bracket 1. Measure the clearance (A) between the stopper (3) and top link bracket (1). If the clearance is not within the factory specifications, adjust with the shims (4) between the stopper (3) and top link bracket (1).
Page 411: Auxiliary Control Valve Wire
M105S, WSM HYDRAULIC SYSTEM (10) Auxiliary Control Valve Wire Adjusting Wire of Auxiliary Control Valve 1. (Valve side) : Set the lock nut (2) at center of wire's threads. 2. (Lever side) : Screw in the wire (3) to the rod end (4) until 5 mm (0.2 in.) of wire's threads remaining.
Page 412: Disassembling And Assembling
M105S, WSM HYDRAULIC SYSTEM [2] DISASSEMBLING AND ASSEMBLING (1) Hydraulic Pump (Power Steering and Three-Point Hitch) Removing Hydraulic Pump 1. Remove the floor mat (1) and inspection plate under the mat. 2. Remove the seat (2) and floor cover (3).
Page 413 M105S, WSM HYDRAULIC SYSTEM Disassembling Hydraulic Pump 1. Put parting marks (A), (B) on the front cover (3), body (7) and housing rear cover (9). 2. Remove the housing rear cover (9) and body (7). 3. Remove the side plate (5).
Page 414: Steering Controller Assembly
M105S, WSM HYDRAULIC SYSTEM (2) Steering Controller Assembly Relief Valve Assembly 1. Remove the adjust plug (3) and draw out the spring (2) and poppet (1). (When reassembling) • Take care not to damage the O-ring. IMPORTANT • After disassembling and assembling the relief valve, be sure to adjust the relief valve setting pressure.
Page 415 M105S, WSM HYDRAULIC SYSTEM Grand Seal, Needle Bearing, Sleeve and Spool 1. Remove the retaining ring (1) with a screw driver. 2. Hold the control valve unit vertically and spool and sleeve align the cross pin parallels to flat side of housing (flow priority valve mounting side), the cross pin is visible through open end of spool.
Page 416: Steering Cylinder
M105S, WSM HYDRAULIC SYSTEM Sleeve and Spool 1. Draw out the dowel pin (1). 2. Draw out the spool (3) from the sleeve (2). 3. Push out the centering spring (4). IMPORTANT • As the clearance between the sleeve (2) and spool (3) is very narrow, draw out the spool by turning it slowly with due care.
Page 417: Relief Valve For Three-Point Hitch
M105S, WSM HYDRAULIC SYSTEM (4) Relief Valve for Three-Point Hitch Relief Valve 1. Remove the lock nut (9). 2. Remove the adjuster (8), and draw out the spring (7) and pilot valve (6). 3. Remove the valve seat (1), and draw out the valve seat (4), the spring (3) and the main valve (2).
Page 418: Separating Three-Point Hitch Cylinder Assembly
M105S, WSM HYDRAULIC SYSTEM (6) Separating Three-Point Hitch Cylinder Assembly Preparation 1. Remove the seat and floor seat cover. 2. Remove the delivery pipe (1). 3. Disconnect the auxiliary control wire (3) and position and draft control rod (2). 4. Disconnect the lowering speed control rod (5).
Page 419 M105S, WSM HYDRAULIC SYSTEM Plug and Unload Valve 1. Secure the control valve with a vise. 2. Remove the seat plug 1 (1) for unload poppet 1 (3). 3. Draw out the spring (2) for unload poppet 1 (3). 4. Remove the seat plug 2 (4) for unload poppet 2 (6).
Page 420: Control Valve Linkage
M105S, WSM HYDRAULIC SYSTEM (8) Control Valve Linkage Position and Draft Linkage 1. Remove the clevis pin (2). 2. Remove the circlips (4), (5), (6), (7). 3. Remove the stopper and draw out the rod (3). 4. Remove the stopper and draw out the rod (8). To remove the O- ring (22) and (23) order by c →...
Page 421: Cylinder Assembly
M105S, WSM HYDRAULIC SYSTEM (9) Cylinder Assembly Lift Arm and Hydraulic Arm Shaft 1. Remove the wire and unscrew the setting screw (3). 2. Remove the screw (5) and lift arm L.H. (1). 3. Draw out the hydraulic arm shaft (2) and lift arm R.H. (4) as a unit.
Page 422 M105S, WSM HYDRAULIC SYSTEM Hydraulic Cylinder Cover and Hydraulic Piston 1. Remove the hydraulic cylinder cover (1). 2. Push out the hydraulic piston (5) from the hydraulic cylinder. (When reassembling) • Install the hydraulic piston, noting O-ring (6) and backup ring (7).
Page 423: Servicing
M105S, WSM HYDRAULIC SYSTEM [3] SERVICING (1) Hydraulic Pump Housing Bore 1. Measure the housing I.D. where the interior surface is not scratched, and measure the housing I.D. where the interior surface is scratched. 2. If the values obtained in the two determinations differ by more than the allowable limit, replace the hydraulic pump as a unit.
Page 424 M105S, WSM HYDRAULIC SYSTEM Clearance between Hydraulic Arm Shaft and Bushing 1. Measure the hydraulic arm shaft O.D. with an outside micrometer. 2. Measure the bushing I.D. with a cylinder gauge, and calculate the clearance. 3. If the clearance exceeds the allowable limit, replace the bushing.
Page 425 ELECTRICAL SYSTEM KiSC issued 03, 2007 A...
Page 426 MECHANISM CONTENTS 1. WIRING DIAGRAM ..................9-M1 [1] MAIN HARNESS..................9-M1 [2] CABIN HARNESS................... 9-M2 [3] ENGINE AND HEAD LAMP HARNESS..........9-M3 2. ELECTRICAL CIRCUIT DETAILED CHART..........9-M4 [1] STARTING, CHARGING SYSTEM, FUSE AND SLOW-BLOW FUSE ................9-M4 [2] SWING SHIFT AND DUAL SPEED ............. 9-M5 [3] LIGHTING SYSTEM ................
Page 427: Wiring Diagram
M105S, WSM ELECTRICAL SYSTEM 1. WIRING DIAGRAM [1] MAIN HARNESS DS Switch DS Lamp Trailer Connector Parking Ground RH Ground Meter Panel Switch 0.5 B 0.5 B Ground LH 0.5 B 0.5 B 0.5 B 0.85 B 0.5 B 0.5 B 0.85 L/R...
Page 428: Cabin Harness
M105S, WSM ELECTRICAL SYSTEM [2] CABIN HARNESS Temperature Control Amplifier Blower Switch Mode Switch Temperature Door Door A/C Switch Control Switch Switch Blower 2 L/Y Resistor Resistor 2 Y/G 3 Y/B 2 L/Y 2 L/Y 2 Y/G 2 Y/G 3 Y/R...
Page 429: Engine And Head Lamp Harness
M105S, WSM ELECTRICAL SYSTEM [3] ENGINE AND HEAD LAMP HARNESS 1.25 B 1.25 Or Head Lamp 1.25 Br 1.25 B Head Lamp 1.25 Or 1.25 Br 1.25 L/W Horn 1.25 B Earth Horn 0.5 Br/W Brake Oil Switch 0.5 B...
Page 430: Electrical Circuit Detailed Chart
M105S, WSM ELECTRICAL SYSTEM 2. ELECTRICAL CIRCUIT DETAILED CHART [1] STARTING, CHARGING SYSTEM, FUSE AND SLOW-BLOW FUSE Slow Blow Fuse Box 2 2R/B 2R/B Blower/Fuel Blower Auxiliary Power AC/Beacon Compressor 5R/B Head/ACC Slow Blow Fuse Box 3 Flasher Slow Blow Fuse Box 1...
Page 431: Swing Shift And Dual Speed
M105S, WSM ELECTRICAL SYSTEM [2] SWING SHIFT AND DUAL SPEED Key IG 0.5Lg/R Shift HI-LO Dual Shift Switch FREE Switch LOCK 12V1.7W Shift LO Switch Diode Dual Shift 0.5Br/L 0.5R/L 0.5R/L Pilot Lamp 0.5Or 0.5Br/W 0.5R/W 0.5R/W Shift HI Switch...
Page 432: Lighting System
M105S, WSM ELECTRICAL SYSTEM [3] LIGHTING SYSTEM Head/ACC Flasher Key IG 0.85R/W 0.85Br 1.25Br To Meter Panel 0.85G Combination Light (Hi Beem) 0.85Or Hazard Switch Switch 14V2W Turn Switch FREE B1 T LOCK B1 H 1(R) FREE 1(H) 0.85R/G To Radio (Back Up)
Page 433: Instrument Panel Board
M105S, WSM ELECTRICAL SYSTEM [4] INSTRUMENT PANEL BOARD Key IG 0.5R/Y To OPC Unit 0.5R/Y To Buzzer 0.5R/Y To Seat Switch Meter Panel Temperature Gauge Fuel Gauge Engine Coolant Temperature Parking Sensor Switch Engine Oil Pressure Diode Switch 0.5Lg Diode 0.5W/L...
Page 434: Working Light, Radio And Beacon
M105S, WSM ELECTRICAL SYSTEM [5] WORKING LIGHT, RADIO AND BEACON AC/Beacon Head/ACC Key ACC 0.5L/Y 0.5L/Y 0.5L/Y To Auxiliary Power Relay Working Light Relay 0.5L/Y To Dome Light Speaker RH Beacon Relay Antenna 14V1.12W 14V1.12W 14V1.12W Beacon SR+SR- Switch Working Light...
Page 435: Wiper
M105S, WSM ELECTRICAL SYSTEM [6] WIPER Key ACC 1.25L Front Wiper Motor 0.85L/Y 1.25L 1.25L 1.25L Rear Wiper Motor (If equipped) 0.85L/W 0.85Lg/W 0.85Lg/B Washer Motor Timer 1.25L Circuit 0.85Lg/W Intermittent Wiper Unit WASH WV WM WASH WASH Rear Wiper Switch...
Page 436: Air Conditioner
M105S, WSM ELECTRICAL SYSTEM [7] AIR CONDITIONER Blower B/Def Key ACC 0.5Y/B 0.5Y/B Servomotor Mode A/C Switch Servomotor Temperature Control 0.5W/B Blower Relay Compressor Relay 1 2 3 4 5 6 1 2 3 4 5 Dual Blower Pressure Motor...
Page 437: Wiring Color
M105S, WSM ELECTRICAL SYSTEM [8] WIRING COLOR B ... Black B/Y ..Black / Yellow Lg/Y ..Light Green / Yellow G ..Green Br/B ..Brown / Black Or/W ..Orange / White L ... Blue Br/Y ..Brown / Yellow R/B ....
Page 438: Starting System
M105S, WSM ELECTRICAL SYSTEM 3. STARTING SYSTEM [1] SYSTEM OUTLINE AND ELECTRICAL CIRCUIT (1) System Outline (1) Battery (2) Main Switch (3) Starter Motor (4) Starter Relay (5) Safety Switch (1-2 Speed Change Monitor) (6) Safety Switch (3-4 Speed Change Monitor)
Page 439: Components
M105S, WSM ELECTRICAL SYSTEM [2] COMPONENTS (1) Air Heater The PTC intake air heater is introduced in order to further improve the starting performance in cold regions. The intake air heater is mounted on the air inlet manifold, while the conventional glow plug on the cylinder head.
Page 440: Air Heater Timer
M105S, WSM ELECTRICAL SYSTEM (2) Air Heater Timer The current flowing time to the air heater is controlled and the heater element is prevented being damaged by burning off. When the battery current flows to 4 terminal, the current flowing time between 6 terminal and 3 terminal (body earth of the timer relay) is controlled.
Page 441: Charging System
M105S, WSM ELECTRICAL SYSTEM 4. CHARGING SYSTEM [1] ELECTRICAL CIRCUIT (1) Battery (2) Main Switch (3) Slow Blow Fuse (4) Alternator (A) To Charging Lamp (Meter Panel) W1015223 KiSC issued 03, 2007 A 9-M15...
Page 442: Lighting System
M105S, WSM ELECTRICAL SYSTEM 5. LIGHTING SYSTEM [1] ELECTRICAL CIRCUIT (1) Hazard Switch (6) Head Lamp RH (11) Front Combination Lamp LH (a) From main switch ACC (2) Combination Switch (7) Dome Lamp (12) Rear Combination Lamp LH terminal (3) Flasher Unit...
Page 443: Components
M105S, WSM ELECTRICAL SYSTEM [2] COMPONENTS (1) Flasher Unit Hazard / Flasher Unit This hazard / flasher unit is a summary to one as for past hazard / flasher unit, hazard relay, and charge relay. (1) Battery (6) Hazard Switch...
Page 444: Easy Checker
M105S, WSM ELECTRICAL SYSTEM 6. EASY CHECKER [1] INDICATION ITEMS The operator must check the conditions of the tractor before and during operations. To facilitate checking, the Easy-Checker (TM) lamps on the panel board is provided. Parking brake The warning lamp (3) comes ON if the parking brake is applied.
Page 445: Electrical Circuit
M105S, WSM ELECTRICAL SYSTEM [2] ELECTRICAL CIRCUIT (1) Parking Brake Lamp (13) High Beam Lamp (2) Brake Oil Lamp (14) Trailer Indicator Lamp (3) Electrical Charging Lamp (15) Air Cleaner Lamp (4) PTO Operation Lamp (16) Air Cleaner Switch (5) Fuel Level Lamp...
Page 446 SERVICING CONTENTS 1. TROUBLESHOOTING ..................9-S1 2. SERVICING SPECIFICATIONS ..............9-S7 3. TIGHTENING TORQUES ................9-S8 4. CHECKING, DISASSEMBLING AND SERVICING........9-S9 [1] CHECKING AND ADJUSTING ...............9-S9 (1) Battery....................9-S9 (2) Main Switch..................9-S11 (3) Air Heater Relay................9-S13 (4) Air Heater Timer................9-S14 (5) Air Heater ..................9-S14 (6) Starter Relay ..................9-S16 (7) Starter Motor ..................9-S17 (8) Relays [PTO Clutch Safety, Key Stop, Work Light, Aux.
Page 447 M105S, WSM ELECTRICAL SYSTEM 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page All Electrical Battery discharged or defective Recharge or replace 9-S10 Equipments Do Not Battery positive cable disconnected or Repair or replace 9-S9 Operate improperly connected Battery negative cable disconnected or...
Page 448 M105S, WSM ELECTRICAL SYSTEM AIR HEATER Reference Symptom Probable Cause Solution Page Air Heater Does Not Slow blow fuse blown Replace G-41 Heat Air heater relay defective Replace 9-S13 Air heater defective Replace 9-S14 Air heater timer defective Replace 9-S14...
Page 449 M105S, WSM ELECTRICAL SYSTEM Dual Speed Reference Symptom Probable Cause Solution Page Dual Speed Monitor Fuse blown Replace G-41 Not Indicate Dual speed switch defective Replace 9-S25 Dual speed indicator bulb blown Replace 9-S25 Wiring harness disconnected or improperly Repair or replace –...
Page 450 M105S, WSM ELECTRICAL SYSTEM LIGHTING SYSTEM Reference Symptom Probable Cause Solution Page Head Light Does Not Fuse blown Replace G-41 Light Bulb blown Replace G-39 Wiring harness disconnected or improperly Repair or replace 9-S28, 29 connected (between main switch B terminal and...
Page 451 M105S, WSM ELECTRICAL SYSTEM EASY CHECKER Reference Symptom Probable Cause Solution Page Brake Oil Level / Bulb blown Replace – Parking Brake Brake oil level too low Supply oil 5-S6 Indicator Lamp Does Brake oil level switch defective Replace 9-S38...
Page 452 M105S, WSM ELECTRICAL SYSTEM GAUGES Reference Symptom Probable Cause Solution Page Fuel Gauge Does Not Fuel gauge defective Replace 9-S34 Function Fuel level sensor (tank unit) defective Replace 9-S40 Wiring harness disconnected or improperly Repair or replace – connected (between panel board and fuel level...
Page 453: Servicing Specifications
M105S, WSM ELECTRICAL SYSTEM 2. SERVICING SPECIFICATIONS STARTER MOTOR Item Factory Specification Allowable Limit Commutator O.D. 32.0 mm 31.4 mm 1.2598 in. 1.2362 in. Mica Undercut 0.50 to 0.80 mm 0.2 mm 0.0197 to 0.0315 in. 0.0079 in. Brush Length 18.0 mm...
Page 454 M105S, WSM ELECTRICAL SYSTEM 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts : See page G-10) Item N·m kgf·m ft-lbs Pulley nut (Alternator) 58.3 to 78.9 5.95 to 8.05...
Page 455: Checking, Disassembling And Servicing
M105S, WSM ELECTRICAL SYSTEM 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING CAUTION • To avoid accidental short circuit, be sure to attach the positive cable to the positive terminal before the negative cable is attached to the negative terminal.
Page 456 M105S, WSM ELECTRICAL SYSTEM Battery Condition Indicator 1. Check the battery condition by reading the indicator (2). State of indicator display Specific gravity of electrolyte and quality of Green electrolyte are both in good condition. Black Needs charging battery White...
Page 457: Main Switch
M105S, WSM ELECTRICAL SYSTEM Battery Storage 1. When shutting down the tractor for long periods of time, remove the battery from the tractor, store the battery in a well ventilated placed where it is not exposed to direct sunlight. 2. Since the battery self-discharges by approx. 0.5 % per day even in storage, it must be once every two months in cold season.
Page 458 M105S, WSM ELECTRICAL SYSTEM Main Switch at ON Position 1. Turn the main switch on. 2. Measure the resistance with an ohmmeter across the 3 terminal and the 1 terminal, and across the 3 terminal and the 6 terminal. 3. If 0 ohm is not indicated, these contacts of the main switch are faulty.
Page 459: Air Heater Relay
M105S, WSM ELECTRICAL SYSTEM (3) Air Heater Relay Connector Voltage 1. Turn off the main switch. 2. Disconnect the 2P connector (3) and both white color lead and red color lead from relay (1). 3. Measure the voltage with a voltmeter across white color lead and chassis.
Page 460: Air Heater Timer
M105S, WSM ELECTRICAL SYSTEM (4) Air Heater Timer Function Check 1. Remove the air heater timer (1). 2. Connect the jumper leads with switch (3) across the battery. 3. Connect the jumper leads across the battery negative terminal and 3 terminal.
Page 461 M105S, WSM ELECTRICAL SYSTEM Functional Check 1. Disconnect the leads from air heater (1). 2. Check the continuity across the lead 1 (2), and the ground, and the lead 2 (3) and the ground with an ohmmeter. 3. If these do not conduct, replace the air heater (1).
Page 462: Starter Relay
M105S, WSM ELECTRICAL SYSTEM (6) Starter Relay Functional Check 1. Remove the starter relay (1). 2. Apply battery voltage across the 3 and 4 terminals, and check for continuity across the 1 and 2 terminals. 3. If continuity is not established across the 1 and 2 terminals, replace it.
Page 463: Starter Motor
M105S, WSM ELECTRICAL SYSTEM (7) Starter Motor Starter Motor B Terminal Voltage 1. Measure the voltage with a voltmeter across the B terminal and chassis. 2. If the voltage differs from the battery voltage, the battery's positive cable or the battery negative cable is faulty.
Page 464: Relays [Pto Clutch Safety, Key Stop, Work Light, Aux. Power, A/C Compressor, A/C Main, Buzzer And Beacon Relay]
M105S, WSM ELECTRICAL SYSTEM (8) Relays [PTO Clutch Safety, Key Stop, Work Light, Aux. Power, A/C Compressor, A/C Main, Buzzer and Beacon Relay] Functional Check NOTE • The relays described here are used same ones so that these are interchangeable.
Page 465: Engine Stop Solenoid
M105S, WSM ELECTRICAL SYSTEM (9) Engine Stop Solenoid Functional Check 1. Remove the engine stop solenoid (5) from the injection pump. 2. Connect the leads as shown in the figure. - Connect the jumper leads from P terminal through the switch...
Page 466: Safety Start System
M105S, WSM ELECTRICAL SYSTEM (10) Safety Start System Preparation 1. Place all control levers to the “NEUTRAL” position. 2. Set the parking brake and stop the engine. Test 1 : Switch for the Main Gear Shift Lever 1. Sit on operator's seat.
Page 467: Swing Shift
M105S, WSM ELECTRICAL SYSTEM PTO Switch 1) Wiring Harness 1. Disconnect the leads from the PTO switch (1). 2. Connect the wiring harness lead terminals to each other and turn the main switch ON. 3. If the indicator do not light, the fuse, wiring harness or bulb is faulty.
Page 468 M105S, WSM ELECTRICAL SYSTEM Safety Switch (1-2, 3-4 Speed Range Monitor) 1. Remove the safety switch leads. 2. Check the continuity with an ohmmeter across switch terminals. 3. If it does not conduct or any value is indicated when the switch is released, the switch is faulty.
Page 469 M105S, WSM ELECTRICAL SYSTEM Buzzer 1. Remove the buzzer (1). 2. Connect the jumper lead across the battery positive terminal and 1 terminal of connector. 3. Connect the jumper lead across the battery negative terminal and 2 terminal of connector.
Page 470 M105S, WSM ELECTRICAL SYSTEM HI-LO Shift Solenoid Valve 1. Disconnect the connector (1). 2. Measure the resistance with an ohmmeter across the 1 terminal to the chassis, and the 2 terminal to the chassis. 3. If infinity is indicated, the solenoid valve is faulty.
Page 471: Dual Speed
M105S, WSM ELECTRICAL SYSTEM (12) Dual Speed Dual Speed Indicator 1. Remove the indicator (1) from the side panel. 2. Check the continuity with an ohmmeter across the indicator terminals. 3. If value is indicated, the bulb is faulty. (1) Indicator...
Page 472 M105S, WSM ELECTRICAL SYSTEM Dual Speed Solenoid Valve 1. Disconnect the wire harness connector (1). 2. Measure the resistance with an ohmmeter across the 1 terminal on the connector (2) and chassis. 3. If infinity is indicated, the solenoid valve is faulty.
Page 473: Alternator
M105S, WSM ELECTRICAL SYSTEM (13) Alternator Preparation 1. Disconnect the 2P connector (3) from alternator after turning the main switch OFF. 2. Perform the following checkings. (1) B Terminal (3) 2P Connector (2) Alternator W1030485 Connector Voltage 1. Turn off the main switch. Measure the voltage between the B terminal (1) and the chassis.
Page 474: Lighting Combination Switch
M105S, WSM ELECTRICAL SYSTEM (14) Lighting Combination Switch Preparation 1. Remove the switch board, and disconnect the combination switch connector after turning off the main switch. 2. Perform the following checkings. (1) Light Switch (3) Horn Switch (2) Turn Signal Light Switch...
Page 475 M105S, WSM ELECTRICAL SYSTEM Light Switch Continuity When Setting Switch at LOW-BEAM Position 1. Measure the resistance with an ohmmeter across the B1 terminal to the T terminal and the B1 terminal to the 2 terminal. 2. If 0 ohm is not indicated, the head light switch is faulty.
Page 476: Hazard Switch
M105S, WSM ELECTRICAL SYSTEM Horn Switch Continuity 1. Measure the resistance with an ohmmeter across the B2 terminal to the H terminal. 2. If measurement is not following below, the horn switch is faulty. Resistance B2 terminal - T terminal...
Page 477: Flasher Unit
M105S, WSM ELECTRICAL SYSTEM (16) Flasher Unit Flasher Unit 1. Disconnect the connector from the flasher unit. 2. Turn the main switch at ON position. 3. Measure the voltage between the terminal 12 and chassis. 4. If the voltage differ from the battery voltage, the wiring harness is faulty.
Page 478: Beacon Switch
M105S, WSM ELECTRICAL SYSTEM Connector Voltage 1. Turn on the main switch. 2. Measure the voltage with a voltmeter across the connector 1 terminal and chassis. 3. If the voltage differs from the battery voltage, the wiring harness, fuse or main switch is faulty.
Page 479: Panel Board
M105S, WSM ELECTRICAL SYSTEM Beacon Switch 1. Check the continuity through the switch with an ohmmeter. 2. If continuity specified below is not indicated, replace it. Terminal Position Beacon switch (1) Beacon Switch (2) Beacon Switch Connector (Switch Side) W1049824...
Page 480 M105S, WSM ELECTRICAL SYSTEM Functional Check of Fuel Gauge 1. Check the continuity with an ohmmeter across the S terminal to T terminal and the S terminal to Q terminal on panel board. 2. If infinity is indicated, the fuel gauge is faulty.
Page 481 M105S, WSM ELECTRICAL SYSTEM Functional Check of Coolant Temperature Gauge 1. Check the continuity with an ohmmeter across the C terminal to T terminal and the C terminal to Q terminal on the panel board. 2. If infinity is indicated, the coolant temperature gauge is faulty.
Page 482: Easy Checker
M105S, WSM ELECTRICAL SYSTEM (20) Easy Checker Engine Oil Pressure Switch Panel Board and Wiring Harness 1. Disconnect the lead (2) from the engine oil pressure switch (1) after turning off the main switch. 2. Turn on the main switch and connect a jumper lead from the lead to the chassis.
Page 483: Parking Brake Switch
M105S, WSM ELECTRICAL SYSTEM Air Cleaner Sensor Continuity 1. Disconnect the leads from the air cleaner sensor (1) after turning the main switch OFF. 2. Measure the resistance with an ohmmeter across the air cleaner sensor terminals. 3. If infinity is not indicated, the sensor is faulty.
Page 484: Brake Oil Switch
M105S, WSM ELECTRICAL SYSTEM Parking Brake Switch Continuity 1. Check the continuity with an ohmmeter across the switch terminals. 2. If it does not conduct or any value is indicated when the switch is pushed, the switch is faulty. 3. If infinity is not indicated when the switch is released, the switch is faulty.
Page 485: Brake Switch
M105S, WSM ELECTRICAL SYSTEM (23) Brake Switch Brake Switch 1) Wiring Harness 1. Disconnect the leads from the brake switch (1). 2. Connect the wiring harness lead terminals to each other and turn the main switch on. 3. If the stop lights do not light, the fuse, wiring harness or bulb is faulty.
Page 486: Fuel Level Sensor
M105S, WSM ELECTRICAL SYSTEM Sensor Continuity 1. Check the continuity with an ohmmeter across the 2 terminal and ground. 2. If a certain value is not indicated, the thermistor of the fuel limit sensor is faulty. A certain value is indicated.
Page 487: Coolant Temperature Sensor
M105S, WSM ELECTRICAL SYSTEM (26) Coolant Temperature Sensor Functional Check 1. Disconnect the connector from the coolant temperature sensor. 2. Measure the resistance with an ohmmeter across the terminal of coolant temperature sensor (1) and the chassis. 3. If the measurement is not indicated, the coolant temperature sensor is faulty.
Page 488: Alternator
M105S, WSM ELECTRICAL SYSTEM (2) Alternator Front Bracket 1. Remove the four screws (3). 2. Separate the front bracket (1) and the rear bracket (2) from each other. IMPORTANT • Put a tally line on the front bracket and the rear bracket for reassembling them later.
Page 489 M105S, WSM ELECTRICAL SYSTEM Reassembling the Brush 1. Fit the brush with its sliding face in the clockwise direction when viewed from front. IMPORTANT • Be sure to keep the two brushes deep in the brush holder. Otherwise the rotor and the rear section can not be fitted into position.
Page 490: Servicing
M105S, WSM ELECTRICAL SYSTEM [3] SERVICING (1) Starter Commutator and Mica 1. Check the contact face of the commutator for wear, and grind the commutator with emery paper if it is slightly worn. 2. Measure the commutator O.D. with an outside micrometer at several points.
Page 491 M105S, WSM ELECTRICAL SYSTEM Armature Coil 1. Check the continuity across the commutator and armature coil core with an ohmmeter. 2. If it conducts, replace the armature. 3. Check the continuity across the segments of the commutator with an ohmmeter.
Page 492: Alternator
M105S, WSM ELECTRICAL SYSTEM Field Coil 1. Check the continuity across the lead (1) and brush (2) with an ohmmeter. 2. If it does not conduct, replace the yoke assembly. 3. Check the continuity across the brush (2) and yoke (3) with an ohmmeter.
Page 493 M105S, WSM ELECTRICAL SYSTEM Rotor 1. Measure the resistance across the slip rings with an ohmmeter. 2. If the resistance is not the factory specification, replace it. 3. Check the continuity across the slip ring and core with an ohmmeter.
Page 494 M105S, WSM ELECTRICAL SYSTEM Rectifier 1. Check the continuity across each diode of rectifier with an ohmmeter. 2. The rectifier is normal if the diode in the rectifier conducts in one direction and does not conduct in the reverse direction.
Page 495 CABIN KiSC issued 03, 2007 A...
Page 496 MECHANISM CONTENTS 1. AIR CONDITIONING SYSTEM ..............10-M1 [1] STRUCTURE ..................10-M1 [2] AIR FLOW..................... 10-M3 [3] AIR CONTROL VENT ................10-M3 [4] CONTROL PANEL................10-M5 [5] OPERATION ..................10-M6 [6] ELECTRICAL SYSTEM ................ 10-M9 (1) Electrical Circuit ................10-M9 (2) Air Conditioner Main Relay and Compressor Relay ......
Page 497: Air Conditioning System
M105S, WSM CABIN 1. AIR CONDITIONING SYSTEM [1] STRUCTURE (1) Heater Hose (4) Outer Roof (7) High Pressure Pipe and Low (9) Condenser (2) Air Conditioner Unit (5) Inner Air Filter Pressure Pipe (10) Compressor (3) Control Unit (6) Fresh Air Filter...
Page 498 M105S, WSM CABIN The machine is equipped with a thin large-capacity air conditioner with outside air intake. The air through the inside air filter (9) as well as the outside air filter (4) and the roof (8) reaches the air conditioner unit (1). The air is cooled and dehumidified by this unit.
Page 499: Air Flow
M105S, WSM CABIN [2] AIR FLOW Air in the CAB and fresh air introduced into CAB flow as shown below. Adjust the nine air ports to obtain the desired condition. IMPORTANT • Do not pour water directly into the fresh air port while washing the vehicle.
Page 500 M105S, WSM CABIN Face air outlet The face air outlets can be adjusted to direct air on to the operator or the rear of the CAB. (1) Face Air Outlet (A) Open (B) Shut (C) Back Area (D) Face Area...
Page 501: Control Panel
M105S, WSM CABIN [4] CONTROL PANEL Control panel switch • Mode Switch (1) (a): Air is blown from only the face air outlets. (b): Air is blown from the front, face and door air outlets. (c): Air is blown from the front and door air outlets.
Page 502: Operation
M105S, WSM CABIN [5] OPERATION Cooling or dehumidifying-heating 1. Set the mode switch to the (a) or (b) position. 2. Set the recirculation / fresh air selection lever to the “FRESH AIR” position. To fall the temperature in the quickly,...
Page 503 M105S, WSM CABIN Foot warming and head cooling 1. Set the mode switch (2) to the (b) position. 2. In the cooling or dehumidifying-heating mode, set the temperature control dial (1) at the center position area. 3. Open the front air outlet and the door air outlet direct it to your feet.
Page 504 M105S, WSM CABIN Defrosting or demisting To defrost or demist the windshield, take the following steps. 1. Set the mode switch (1) to the (c) position. 2. Open the front air outlet, door air outlet direct it to the windshield.
Page 505: Electrical System
M105S, WSM CABIN [6] ELECTRICAL SYSTEM (1) Electrical Circuit (1) Mode Switch (5) Compressor Relay (8) Compressor Magnet Clutch (11) Blower Resistor (2) Temperature Control Dial (6) Thermo Switch (9) Blower Motor (12) Servo Motor (Mode) (3) Blower Switch (7) A/C Pressure Switch...
Page 506: Air Conditioner Main Relay And Compressor Relay
M105S, WSM CABIN (2) Air Conditioner Main Relay and Compressor Relay (1) Battery (4) A/C Switch (Air Conditioner) (7) A/C Pressure Switch (10) Blower Motor (2) Slow Blow Fuse (5) Compressor Relay (8) Magnetic Clutch (11) Blower Resistor (3) Main Switch...
Page 507: Blower Switch
M105S, WSM CABIN (3) Blower Switch (1) Blower Switch (5) Compressor Relay (8) Magnetic Clutch (11) Blower Resistor (2) Battery (6) Thermo Switch (9) Blower Relay (12) Slow Blow Fuse (3) Main Switch (7) A/C Pressure Switch (10) Blower Motor...
Page 508 M105S, WSM CABIN The wind of blower can be changed in 3 position (1- Low, 2-Medium and 3-High) by changing the blower switch (1) position. Blower switch is “OFF” position When the blower switch (1) is in OFF position, even if the main switch (3) is turned to ON position, the blower relay (9) does not operate.
Page 509 SERVICING CONTENTS 1. TROUBLESHOOTING ..................10-S1 2. SERVICING SPECIFICATIONS ..............10-S7 3. TIGHTENING TORQUES ................10-S8 4. PRECAUTIONS AT REPAIRING REFRIGERANT CYCLE ......10-S9 [1] HANDLING OF SERVICE TOOLS.............10-S10 (1) Manifold Gauge Set ................10-S10 (2) Refrigerant Charging Hose .............10-S12 (3) Vacuum Pump Adaptor..............10-S13 (4) Electric Gas Leak Tester..............10-S13 (5) Can Tap Valve ................10-S14 (6) T-joint ....................10-S14 (7) R134a Refrigerant Recover and Recycling Machine ......10-S14...
Page 510 M105S, WSM CABIN 1. TROUBLESHOOTING COMPRESSOR Reference Symptom Probable Cause Solution Page Noisy (Compressor Bearing of compressor worn or damaged Replace 10-S42 Valves in compressor damaged Replace 10-S42 Belt slipping Adjust or replace G-29 Compressor mounting screws loosen Tighten 10-S42...
Page 511 M105S, WSM CABIN AIR CONDITIONING SYSTEM Reference Symptom Probable Cause Solution Page Insufficient Cooling Insufficient refrigerant Check with manifold 10-S23 (Many Bubbles in gauge Sight Glass) Refrigerant leaking from some place in Repair and charge – refrigerating cycle refrigerant Air mixed in...
Page 512 M105S, WSM CABIN Air Conditioning System (Continued) KiSC issued 03, 2007 A 10-S3...
Page 513 M105S, WSM CABIN KiSC issued 03, 2007 A 10-S4...
Page 514 M105S, WSM CABIN KiSC issued 03, 2007 A 10-S5...
Page 515 M105S, WSM CABIN WINDSHIELD WIPER Reference Symptom Probable Cause Solution Page Windshield Wiper Wiring defective Check and repair – Does Not Operate Fuse blown (Short-circuit, burnt component Correct cause and G-41 inside motor or other part for operation) replace Wiper motor defective (Broken armature, worn...
Page 516: Servicing Specifications
M105S, WSM CABIN 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit A/C Compressor Magnet Clutch Airgap 0.25 to 0.50 mm – 0.01 to 0.02 in. 3.0 to 4.0 Ω Magnet Clutch Stator Coil Resistance – Refrigerating Cycle Pressure 0.15 to 0.20 MPa –...
Page 517 M105S, WSM CABIN 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts : See page G-10.) Item N·m kgf·m ft-lbs Oil cooler pipe nut 49.0 to 68.6 5.7 to 7.0...
Page 518: Precautions At Repairing Refrigerant Cycle
M105S, WSM CABIN 4. PRECAUTIONS AT REPAIRING REFRIGERANT CYCLE When checking or repairing the air conditioning system, the following precautions and rules must be observed. And it is of first importance that no other personnel than a well-trained serviceman should be allow to handle the refrigerant.
Page 519: Handling Of Service Tools
M105S, WSM CABIN (Reference) Replacing Parts Replenish Quantity Brand Name 20 cc Condenser 0.021 U.S.qts 0.018 Imp.qts 20 cc Evaporator 0.021 U.S.qts ND-ACEITE 8<PÁG* oil> 0.018 Imp.qts 10 cc Receiver 0.011 U.S.qts 0.009 Imp.qts *PAG : Polyalkyleneglycol (Synthetic oil) W1012709...
Page 520 M105S, WSM CABIN When LO Valve is Closed and HI Valve is Opened Two circuits are established. Port (C) → HI pressure gauge (2) → Port (B) → Port (D) (Schrader valve must be opened) Port (A) → LO pressure gauge (1) NOTE •...
Page 521: Refrigerant Charging Hose
M105S, WSM CABIN (2) Refrigerant Charging Hose The charging hoses are classified into three colors. Each charging hose must be handled as follows : • The air conditioner manufacture recommends that the blue hose (3) is used for the LO pressure side (suction side), the green hose (5) for refrigeration side (center connecting port) and the red hose (4) for HI pressure side (discharged side).
Page 522: Vacuum Pump Adaptor
M105S, WSM CABIN (3) Vacuum Pump Adaptor Objective of the Vacuum Pump Adaptor 1. After vacuum has been created in the air conditioning cycle, when the vacuum pump is stopped, since there is vacuum in hoses within the gauge manifold, the vacuum pump oil flows back into the charging hose.
Page 523: Can Tap Valve
M105S, WSM CABIN (5) Can Tap Valve The can tap valve that is used to charge the refrigerant into the air conditioning system, should be used as follows : 1. Before putting the can tap valve on the refrigerant container, turn the handle (1) counterclockwise till the valve needle is fully retracted.
Page 524: Checking And Charging Refrigerant Cycle
M105S, WSM CABIN 5. CHECKING AND CHARGING REFRIGERANT CYCLE [1] CHECKING WITH MANIFOLD GAUGE IMPORTANT • The gauge indications described in the following testing are those taken under the same condition, so it should be noted that the gauge readings will differs somewhat with the ambient conditions.
Page 525 M105S, WSM CABIN Insufficient Refrigerant 1. Symptoms seen in refrigerating cycle - Both LO and HI pressure side (1), (2) pressures too low. LO pressure side (1) : 0.05 to 0.1 MPa (0.5 to 1.0 kgf/cm , 7.1 to 14.2 psi) HI pressure side (2) : 0.69 to 0.98 MPa...
Page 526 M105S, WSM CABIN Air Entered in the Cycle 1. Symptoms seen in refrigerating cycle - Both LO and HI pressure side (1), (2) pressures too high. LO pressure side (1) : 0.2 to 0.35 MPa (2.0 to 3.5 kgf/cm , 28 to 49.8 psi) HI pressure side (2) : 1.96 to 2.45 MPa...
Page 527 M105S, WSM CABIN Refrigerant Fails to Circulate 1. Symptoms seen in refrigerating cycle - LO pressure side (1) pressure is vacuum and, HI pressure side (2) is low pressure. LO pressure side (1) : Vacuum HI pressure side (2) : 0.49 to 0.59 MPa (5 to 6 kgf/cm , 71.2 to 85.3 psi)
Page 528: Discharging Evacuating And Charging
M105S, WSM CABIN Faulty Compression of Compressor 1. Symptoms seen in refrigerating cycle - LO pressure side (1) : 0.39 to 0.59 MPa (4 to 6 kgf/cm , 56.9 to 85.3 psi) - HI pressure side (2) : 0.69 to 0.98 MPa (7 to 10 kgf/cm , 99.6 to 142.2 psi)
Page 529: Evacuating The System
M105S, WSM CABIN (2) Evacuating the System Evacuating the System 1. Discharge refrigerant from the system by R134a refrigerant recovery and recycling machine. (Refer to “Discharging the Refrigerant”. (See page 10-S19.)) 2. Connect the charging hose (4) (red) to the HI pressure side charging valve and connect the charging hose (5) (blue) to the LO pressure side charging valve.
Page 530: Charging The Refrigerant
M105S, WSM CABIN (3) Charging the Refrigerant Charging an Empty System (Liquid) This procedure is for charging an empty system through the HI pressure side with the refrigerant in the liquid state. CAUTION • Never run the engine when charging the system through the HI pressure side.
Page 531 M105S, WSM CABIN Charging an Empty or Partially Charged System (Vapor) This procedure is to charge the system through the LO pressure side with refrigerant in the vapor state. When the refrigerant container is placed right side up, refrigerant will enter the system as a vapor.
Page 532: Checking Charge Refrigerant Amount
M105S, WSM CABIN (4) Checking Charge Refrigerant Amount After charging the refrigerant, check for amount of charging refrigerant as follows. NOTE • The pressure on the following checking is the gauge indications at ambient temperature 30 °C (86 °F), so it should be noted that the pressure will differ some what with the ambient temperature.
Page 533: Checking, Disassembling And Servicing
M105S, WSM CABIN 6. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING (1) Compressor Operation of Magnetic Clutch 1. Start the engine. 2. Check whether abrasion of abnormal noise is heard when only the magnetic clutch pulley is running while the A/C switch is turned off.
Page 534: Air Conditioner Unit
M105S, WSM CABIN (2) Air Conditioner Unit Connector Voltage (A/C Main Relay, Compressor Relay) 1. When turning on the main switch, voltage across the 1 terminal and chassis should be approx. battery voltage. 2. The voltage across the 4 terminal and chassis should be approx.
Page 535: Blower Switch
M105S, WSM CABIN (3) Blower Switch Connector Voltage 1. Disconnect the blower switch 4P connector. 2. Turn the main switch “ON” position. 3. Measure the voltage with a voltmeter across the connector 3 terminal and 4 terminal. 4. If the voltage differs from the battery voltage, the wiring harness, A/C relay, fuse or main switch is faulty.
Page 536: Blower Motor
M105S, WSM CABIN (4) Blower Motor Blower Motor Test 1. Remove the outer roof. 2. Turn the blower motor (1) by hand and check whether it turns smoothly. 3. Disconnect the connector (2) of blower motor (1). 4. Connect a jumper lead from battery (3) positive terminal to connector B terminal.
Page 537: A/C Switch
M105S, WSM CABIN (6) A/C Switch Connector Voltage 1. Disconnect the A/C switch 3P connector. 2. Turn the main switch “ON” position. 3. Measure the voltage with a voltmeter across the connector 1 terminal and terminal. 4. If the voltage differs from the battery voltage, the wiring harness, A/C relay or fuse is faulty.
Page 538: Mode Switch
M105S, WSM CABIN (7) Mode Switch Mode Switch Check 1. Disconnect the mode switch 4P connector. 2. Check the continuity through the switch with an ohmmeter. 3. If the continuity specified below is not indicated, check the switch. Terminal Position...
Page 539: Temperature Motor
M105S, WSM CABIN (9) Temperature Motor Temperature Motor Check 1. Confirm whether the temperature control dial (3) is defective. (See page 10-S29.) 2. Turn the main switch “ACC” position. 3. Turn the blower switch (2) at 1 position. 4. Turn the temperature control dial from COOL (a) position to WARM (b).
Page 540: A/C Pressure Switch
M105S, WSM CABIN (11) A/C Pressure Switch HI Pressure Side 1. Connect the manifold gauge (5) to compressor as following procedure. Close the HI and LO pressure valves (3), (4) of manifold gauge tightly, and connect the charging hoses (red and blue) (6), (7) to the respective compressor service valves.
Page 541: Front Wiper Switch
M105S, WSM CABIN LO Pressure Side 1. Disconnect 2P connector of pressure switch. 2. Measure the resistance with an ohmmeter across the connector terminals. 3. If 0 ohm is not indicated at normal condition, there is no refrigerant in the refrigerating cycle because gas leaks or pressure switch is defective.
Page 542 M105S, WSM CABIN Wiper Switch 1. Check the continuity through the switch with an ohmmeter. 2. If the continuity specified below are not indicated, the switch is faulty. Terminal Position WASH I WASH II (1) Front Wiper Switch Connector W1046557...
Page 543: Wiper Motor Relay
M105S, WSM CABIN (13) Wiper Motor Relay Wiper Motor Relay 1. Remove the wiper motor relay (1). 2. Connect jumper leads across the 4 terminal and the bulb terminal, and across the 5 terminal and the bulb terminal. 3. Connect jumper leads across the battery negative terminal and the 3 terminal.
Page 544: Disassembling And Assembling
M105S, WSM CABIN [2] DISASSEMBLING AND ASSEMBLING (1) Separating Cabin from Tractor Draining Coolant CAUTION • Never remove the radiator cap until coolant temperature is well below its boiling point. Then loosen cap slightly to the stop to relieve any excess pressure before removing cap completely.
Page 545 M105S, WSM CABIN Preparation 2 1. Remove the side panel LH (1) and side panel RH (2). 2. Disconnect the radiator hose (3). 3. Remove the shield weather strip (4) and radiator plate (5). 4. Remove the air cleaner hoses (6).
Page 546 M105S, WSM CABIN Preparation 3 Without discharging the refrigerant from system 1. Remove the air condenser slide stopper (1) and slide out the condenser (2). 2. Remove the compressor (3) with hoses. (When reassembling) • Take care not damage the air condenser fin.
Page 547 M105S, WSM CABIN Preparation 4 1. Disconnect the heater hoses (2). 2. Disconnect the accelerator wire (3). 3. Remove the steering controller support (6) and bonnet stay (1). 4. Disconnect the hour meter cable (5) from engine side. 5. Remove the screw (7) and pull out the steering joint (4).
Page 548 M105S, WSM CABIN Preparation 6 1. Remove the seat (1) and floor seat cover (2). 2. Remove the floor mat (3) and inspection plate under the floor mat. 3. Disconnect the main shift rod 2 (5). 4. Disconnect the select wire (4).
Page 549 M105S, WSM CABIN Preparation 7 1. Disconnect the PTO clutch cable (3). 2. Disconnect the parking brake wire (2). 3. Disconnect the brake hose LH, RH (4). 4. Remove the auxiliary control valve wire (1). 5. Disconnect the ground cable (5).
Page 550 M105S, WSM CABIN Dismounting Cabin 1. Set the cabin dismounting tool (1). 2. Remove the cabin mounting bolts and nuts. 3. Dismounting the cabin from tractor body. (When reassembling) 123.6 to 147.1 N·m Cabin mounting screws Tightening torque 12.6 to 15.0 kgf·m and nuts 91.1 to 108.5 ft-lbs...
Page 551: Removing Compressor Assembly
M105S, WSM CABIN (2) Removing Compressor Assembly Compressor Assembly 1. Discharge the refrigerant from the system. (Refer to “Discharging the Refrigerant” : See page 10-S19.) 2. Disconnect the low pressure pipe (suction) (4) and high pressure pipe (discharge) (3) from the compressor, then cap the open fitting immediately to keep moisture out of the system.
Page 552 M105S, WSM CABIN Hub Plate 1. Three stopper bolts (1) are set in stopper magnetic clutch (2) at the position corresponding to the shape of compressor. (See page G-69, 70.) 2. The stopper magnetic clutch (2) is hung on hub plate (3) and it is fixed that the compressor rotates.
Page 553 M105S, WSM CABIN Stator 1. Remove the lead wire from compressor body. 2. Remove the external snap ring (1). 3. Remove the stator (2). (When reassembling) • Do not use the external snap ring again. • Assemble the external snap ring for the tapered side to become outside of front housing.
Page 554: Removing Air Conditioner Unit
M105S, WSM CABIN (3) Removing Air Conditioner Unit Air Conditioning Unit 1. Remove the unit cover (1). 2. Disconnect the heater hoses (6). 3. Disconnect the cooler pipe (liquid) (2) and cooler pipe (suction side) (3). 4. Remove the five screws and take off the air conditioning unit.
Page 555 M105S, WSM CABIN High Pressure Pipe 1 and Low Pressure Pipe 1. Disconnect the low pressure pipe (3) from the compressor (2) and cap the open fittings immediately to keep moisture out of the system. 2. Disconnect the high pressure pipe 1 (1) from the compressor (2) and condenser.
Page 556: Removing Heater Hoses
M105S, WSM CABIN High Pressure and Low Pressure Pipes 1. Remove the outer roof. 2. Disconnect the pressure switch (1) connector. 3. Disconnect the high pressure pipe 2 (2), then cap the open fitting immediately to keep moisture out of the system.
Page 557 M105S, WSM CABIN Muffler and Bonnet 1. Disconnect the battery cable. 2. Remove the muffler (1). 3. Remove the bonnet (2). (See page 10-S35.) 4. Remove the side cover (3). (1) Muffler (3) Side Cover (2) Bonnet (4) Battery W1068475 Heater Hoses 1.
Page 558: Cab Windshield
NOTE • Sika Tack-Ultrafast and cleaner No. 1 are made by Sika Corporation. • These materials can't be provided by Kubota Corporation. • Therefore, please find the local made equivalent materials in your country and use them when you need.
Page 559: Wiper Motor
M105S, WSM CABIN Before Replacing Windshields (3) 1. Check that the glasses are not damaged and cracked. 2. Turn over the glass and clean this surface of the glass by Sika- cleaner No. 1. 3. The cleaning area of the rear surface is indicated “A” in the figure left.
Page 560: Servicing
M105S, WSM CABIN Rear Wiper Motor 1. Remove the wiper motor cover (5). 2. Disconnect the rear wiper motor 4P connector (2). 3. Remove the wiper arm mounting nut (4) and wiper arm (6). 4. Remove the wiper link cap (3) and nut.
Page 561 EDITOR : KUBOTA FARM & INDUSTRIAL MACHINERY SERVICE, LTD. 64, ISHIZU-KITAMACHI, SAKAI-KU, SAKAI-CITY, OSAKA, 590-0823, JAPAN PHONE : ( 81 ) 72-241-1129 : ( 81 ) 72-245-2484 E-mail : ksos-pub@kubota.co.jp Printed in Japan 2007. 03, S, EI, EI, e Code No.9Y011-13350 KUBOTA Corporation 2004.

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