Page 1 Korea : KUBOTA KOREA CO., LTD. 41-27, Jayumuyeok- il, Baeksan-myeon, Gimje-si, Jeollabuk-do, Korea Telephone : (82)-63-544-5822 India : KUBOTA AGRICULTURAL MACHINERY INDIA PVT. LTD. No.15, Medavakkam Road, Sholin anallur, Chennai-600119, T.N., India Telephone : (91)44-6104-1500 · Vietnam : KUBOTA VIETNAM CO., LTD.
Page 2 ABBREVIATION LIST Abbreviations Definitions 2-Wheel Drive 4-Wheel Drive American Petroleum Institute ASABE American Society of Agricultural and Biological Engineers, USA ASTM American Society of Testing and Materials, USA Deutsches Institut für Normung, GERMANY Dual Traction [4WD] Feet Per Minute Hi-Lo High Speed-Low Speed Hydrostatic Transmission Meters Per Second...
Page 3: Universal Symbols
UNIVERSAL SYMBOLS As a guide to the operation of your tractor, various universal symbols have been utilized on the instruments and controls. The symbols are shown below with an indication of their meaning. Safety Alert Symbol Slow Read Operator's Manual Fast Hour meter/Elapsed Operating Hours Brake...
Page 4 FOREWORD You are now the proud owner of a KUBOTA Tractor. This tractor is a product of KUBOTA’s quality engineering and manufacturing. It is made of the excellent materials and under rigid quality control systems. It will give you long, satisfactory service.
Page 5: Table Of Contents
9. Loader control lever ........................... 51 ACCESSORY..............................51 1. 12 V electric outlet ............................. 51 2. Glove box ..............................52 PRE-OPERATION CHECK OF THE TRACTOR ...............53 DAILY CHECK ITEMS BEFORE OPERATION OF THE TRACTOR ..............53 PRE-OPERATION CHECK OF THE LOADER................54 BX23S, LA340, BT603...
Page 6 1. PTO select lever ............................77 2. PTO clutch lever ............................77 3. PTO shaft cover and PTO shaft cap......................78 4. Using the stationary PTO........................... 78 5. PTO drive shaft............................79 5.1 Adjusting the length of PTO drive shaft....................79 BX23S, LA340, BT603...
Page 7 1. How to use the front guard (if equipped) ....................102 USING THE ATTACHMENTS (IF EQUIPPED)....................103 1. Attaching the attachments (if equipped) ....................103 2. Detaching the attachments (if equipped) ....................105 3. Performing the maintenance of the attachments (if equipped) ..............105 BX23S, LA340, BT603...
Page 8 1. Checking of the battery..........................125 1.1 Battery charging ..........................126 1.2 Dealing with the battery when storing the tractor for a long period ..........126 2. Cleaning the air cleaner element ......................126 3. Checking the fuel filter ..........................127 BX23S, LA340, BT603...
Page 9 CHECKING THE BACKHOE DAILY ......................... 141 SERVICE OF THE BACKHOE EVERY 10 HOURS ..................141 1. Lubricating the backhoe .......................... 141 SERVICE OF THE BACKHOE EVERY 50 HOURS ..................142 1. Checking the bolt torque of the sub frame....................142 BX23S, LA340, BT603...
Page 10 REMOVING THE BACKHOE....................161 HOW TO REMOVE THE BACKHOE ........................ 161 STORING THE BACKHOE ..........................163 REINSTALLING THE BACKHOE....................164 HOW TO REMOVE THE BACKHOE ........................ 164 TROUBLESHOOTING ......................167 ENGINE TROUBLESHOOTING ........................167 OPTIONS ..........................168 OPTION ITEMS ..............................168 INDEX............................169 BX23S, LA340, BT603...
Page 11: Safe Operation
1. Precautions before operating the 1.2 Precautions for CAB and ROPS tractor KUBOTA recommends the use of a CAB or roll-over- Know your equipment and its limitations. protective-structures (ROPS), and seat belt in almost Read this entire manual before starting and operating all applications.
Page 12 • Do not operate or tow the tractor at speeds (OPC) are functioning correctly before each time exceeding specific travel speed. you use the tractor. Test safety systems. See 2. Checking the engine start system on page 123 BX23S, LA340, BT603...
Page 13 SMV emblem on the equipment as • To improve stability of the tractor on slope, follow well. recommendations for proper ballasting as shown in BALLAST on page 91 BX23S, LA340, BT603...
Page 14 PTO-driven- equipment, read the manufacturer's manual and review the safety labels attached to the equipment. • When operating stationary PTO-driven- equipment, always apply the parking brake of tractor and place the chocks behind and in front of BX23S, LA340, BT603...
Page 15 • Always maintain the correct tire pressure. Do not 2. Set the parking brake. inflate the tires above the recommended pressure 3. Lower all implements to the ground. shown in 1. Inflation pressure of tires on page BX23S, LA340, BT603...
Page 16 Please dispose properly. • Do not work under any hydraulically supported See your local recycling center or KUBOTA Dealer devices. They can settle, suddenly leak down, or be to learn how to recycle or get rid of waste products.
Page 17 ISO 24410, first edition 2005-04-15. • Gradually stop the loader boom when lowering or – Use of a non-KUBOTA attachment that does lifting. not comply with ISO 24410 or the improper • Use caution when handling loose or shiftable loads.
Page 18 Otherwise injury from flying metal • Do not dig under the stabilizer or the tractor, fragments could result. especially in soft or sandy condition. Take extra precaution in wet or thawing ground. BX23S, LA340, BT603...
Page 19 Hydraulic fluid escaping from a very small hole can be almost invisible. Do not use hands to search for BX23S, LA340, BT603...
Page 20 SAFE OPERATION SAFETY LABELS 1. Safety labels of the tractor BX23S, LA340, BT603...
Page 21 SAFE OPERATION BX23S, LA340, BT603...
Page 22 SAFE OPERATION BX23S, LA340, BT603...
Page 23 SAFE OPERATION BX23S, LA340, BT603...
Page 24 SAFE OPERATION 2. Safety labels of the loader BX23S, LA340, BT603...
Page 25 SAFE OPERATION BX23S, LA340, BT603...
Page 26 SAFE OPERATION 3. Safety labels of the backhoe BX23S, LA340, BT603...
Page 27 SAFE OPERATION BX23S, LA340, BT603...
Page 28 • Replace damaged or missing safety labels with new safety labels from your local KUBOTA Dealer. • If a component with safety label(s) attached is replaced with new component, make sure that new safety label(s) is (are) attached in the same location(s) as the replaced component.
Page 29: Servicing Of Tractor, Loader, And Backhoe
However, when your tractor, loader, and backhoe need parts or major service, be sure to see your KUBOTA Dealer. For service, contact the KUBOTA Dealership from which you purchased your tractor or your local KUBOTA Dealer.
Page 30: Warranty Of The Tractor
To put the tractor out of service, correctly follow the local rules and regulations of the country or territory where you scrap it. If you question the tractor, consult your local KUBOTA Dealer. (1) Loader serial number [A] Boom RH inside NOTE : •...
Page 31: Specifications Of The Tractor
2515 mm (99.0 in.) w / Front guard 1145 mm Overall width (45.1 in.) 2190 mm (with ROPS) Dimensions (86.2 in.) Overall height Top of seat 1255 mm (49.4 in.) 1400 mm Wheel base (55.1 in.) (Continued) BX23S, LA340, BT603...
Page 32 Coupler (fitting) ISO 7241-1 series B SAE 1-3/8, 6 splines Rear PTO Revolution STD (2500 rpm) USA No.5 (KUBOTA 10-tooth) involute spline Mid PTO Revolution STD (2500 rpm) The company reserves the right to change the specifications without notice. Manufacturer's estimate...
Page 33: Traveling Speeds Table
0 mph to 8.4 mph 0 km/h to 5.0 km/h 0 mph to 3.1 mph Reverse High 0 km/h to 10.5 km/h 0 mph to 6.5 mph The company reserves the right to change the specifications without notice. BX23S, LA340, BT603...
Page 34: Specifications Of The Loader
SPECIFICATIONS OF THE LOADER LOADER SPECIFICATIONS TABLE SPECIFICATIONS OF THE LOADER LOADER SPECIFICATIONS TABLE Loader model LA340 and LA340S Tractor model BX23S 40 mm Bore (1.57 in.) Boom cylinder 326 mm Stroke (12.8 in.) 65 mm Bore (2.56 in.) Bucket cylinder...
Page 35: Dimensional Specifications Of The Loader
1392 mm 1438 mm Reach with bucket on ground (54.8 in.) (56.6 in.) Bucket roll-back angle 29 deg. 125 mm 122 mm Digging depth (4.9 in.) (4.8 in.) 990 mm Overall height in carrying position (39.0 in.) BX23S, LA340, BT603...
Page 36: Operational Specifications Of The Loader
Bucket roll-back force at 1500 mm height (1249 lbs.) (1183 lbs.) 5456 N 5195 N Bucket roll-back force at ground level (1227 lbs.) (1168 lbs.) Raising time 3.3 sec. Lowering time 2.5 sec. Bucket dumping time 2.7 sec. Bucket rollback time 2.3 sec. BX23S, LA340, BT603...
Page 37 SPECIFICATIONS OF THE LOADER LA340 LA340S (A) Height (mm) (C) At pivot pin (E) Rollback force (kn) (B) Lift capacity (kg) (D) 500 mm forward of pivot pin BX23S, LA340, BT603...
Page 38: Loader Terminology
SPECIFICATIONS OF THE LOADER LOADER TERMINOLOGY LOADER TERMINOLOGY (1) Loader control lever (4) Main frame (7) Bucket cylinder (2) Side frame (5) Boom cylinder (8) Bucket (3) Mounting hook (6) Boom (9) Lock lever BX23S, LA340, BT603...
Page 39: Specifications Of The Backhoe
Stabilizer spread-operating (73.3 in.) (A3) Angle of departure per SAE J1234 20.1 deg. Leveling angle 11 deg. Swing arc 140 deg. NOTE : • The specifications are taken with KUBOTA BX23S tractor. (Tire size: Front 18X8.5-10, Rear 26X12.00-12) BX23S, LA340, BT603...
Page 40 SPECIFICATIONS OF THE BACKHOE BACKHOE SPECIFICATIONS BX23S, LA340, BT603...
Page 41: Specifications Table Of The Backhoe
Trenching 30.5 cm 0.014 m 0.020 m 13 kg 12 in. (12 in.) (0.494 cu.ft.) (0.706 cu.ft.) (29 lbs) Trenching 16 40.6 cm 0.020 m 0.029 m 16 kg (16 in.) (0.706 cu.ft.) (1.024 cu.ft.) (35 lbs) BX23S, LA340, BT603...
Page 42: Lift Capacity Of The Backhoe (Per Sae J31)
(lbs) (E) 203 kg (448 lbs) (A) 192 kg (423 lbs) (F) 201 kg (443 lbs) (B) 212 kg (467 lbs) (G) 214 kg (472 lbs) (C) 215 kg (474 lbs) (H) 262 kg (578 lbs) BX23S, LA340, BT603...
Page 43: Backhoe Terminology
(17) Swing lock pin (3) Bucket link (8) Boom cylinder (13) Stabilizer pad (18) Boom lock pin (4) Bucket cylinder (9) Swing frame (14) Stabilizer cylinder (19) Boom and swing lock lever (5) Dipperstick (10) Main frame (15) Joystick control BX23S, LA340, BT603...
Page 44: Implement Limitations
IMPLEMENT LIMITATIONS IMPLEMENT LIMITATION TABLES IMPORTANT : The KUBOTA Tractor has been thoroughly tested for proper performance with implements sold or approved by KUBOTA. Do not use the following implements: • Implements which are not sold or approved by KUBOTA •...
Page 45 OPS (operator-protective-structure), FOPS (falling-object-protective-structure), and so on. These optional equipments, however, are not available for this tractor. Without optional equipments such as OPS and FOPS, the use of the tractor is limited to tractor-specific-applications like transport and stationary work. BX23S, LA340, BT603...
Page 46 (549 lbs.) 150 L Sprayer Max. tank capacity (40 U.S.gals.) 152 cm Max. cutting width (60 in.) Front blade Sub frame Necessary 152 cm Max. cutting width (60 in.) Rear blade 112 kg Max. weight (248 lbs.) (Continued) BX23S, LA340, BT603...
Page 47 KUBOTA provides BT603 backhoe for BX23S. No other backhoe installed by 3-point hitch is permitted for BX23S. KUBOTA provides LA340 and LA340S Front-end Loader for BX23S. The value contains the weight of KUBOTA standard bucket. Reduce speed and trailer loads when operating in slippery conditions or when operating on slopes and using front wheel drive.
Page 48: Instrument Panel And Controls
(1) Easy Checker …69 Tachometer…71 (3) Hazard light switch…45 (4) Turn signal light switch…45 (5) Head light switch…45 (6) Fuel gauge…70 (7) Coolant temperature gauge…70 (8) Hour meter…71 (9) Key switch…45 (10) Tilt lever…45 (11) Hood open lever…46 BX23S, LA340, BT603...
Page 49: Key Switch
When the left or right turn signal is activated in combination with the hazard lights, the indicated turning light will flash and the other light will stay on. NOTE : • Be sure to return the turn-signal-light-switch to center position after turning. BX23S, LA340, BT603...
Page 50: Hood Open Lever
Touching the hot muffler or exhaust pipes could cause severe burns. 1. Pull the front guard forward. 2. Pull the hood-open-lever to release the latch to open the hood, and open the hood. (1) Hood open lever (3) Front guard (2) Hood (A) Pull BX23S, LA340, BT603...
Page 51: Foot Controls And Hand Controls
(8) Speed set rod…50, (9) Hand accelerator lever…50 (10) Loader control lever…93, (11) Lock lever…99 (12) Speed control pedal…50 (13) Hydraulic control lever…84 (14) Front wheel drive lever…49 (15) Range gear shift lever (Hi-Lo)…49 (16) Operator's seat…48 (17) Seat belt…48 BX23S, LA340, BT603...
Page 52: Operator's Seat
NOTE : • It is recommended that the operator practice Adjust the seat belt for proper fit and connect it to the engaging and disengaging the parking brake on buckle. The seat belt is auto-locking retractable type. BX23S, LA340, BT603...
Page 53: Range Gear Shift Lever (Hi-Lo)
“N” position, you should attempt the following procedure. 1. Slightly depress the speed-control-pedal to rotate the gears inside of transmission. 2. Release the speed-control-pedal to the neutral “N” position. 3. Shift the range-gear-shift-lever. BX23S, LA340, BT603...
Page 54: Hand Accelerator Lever
8. Speed set device The speed-set-device is designed for tractor-operating- efficiency and operator's comfort. This device will provide a constant forward operating speed by mechanically holding the speed-control-pedal at a selected position. (1) Hand accelerator lever (B) Decrease (A) Increase BX23S, LA340, BT603...
Page 55: How To Use The Speed Set Device
• Do not use when wet. NOTE : • Do not connect a light or other device that draws more than 120 watts to 12 V electric outlet. The battery may discharge very rapidly or the 12 V electric outlet may fail. BX23S, LA340, BT603...
Page 56: Glove Box
INSTRUMENT PANEL AND CONTROLS ACCESSORY (1) 12V electric outlet 2. Glove box (1) Glove box BX23S, LA340, BT603...
Page 57: Pre-Operation Check Of The Tractor
• Checking the wire harness • Checking the seat belt and ROPS • Checking the movable parts • Refuel 2. Checking the fuel gauge and refueling on page 119. • Care for safety labels 4. Care for safety labels on page BX23S, LA340, BT603...
Page 58: Pre-Operation Check Of The Loader
• For tractor stability and operator's safety, add the rear ballast to the rear of the tractor in the form of 3-point counter weight and the rear wheel ballast. The amount of the rear ballast will depend on the application. BX23S, LA340, BT603...
Page 59: Performing The Test Operation Of The Loader
1. Slightly move the control lever from the “N” position. 2. Slowly raise the boom of the loader just enough for the bucket to clear the ground when fully dumped. 3. Slowly operate the loader through the dump and roll back cycles. BX23S, LA340, BT603...
Page 60: Pre-Operation Check Of The Backhoe
150 kPa Front 18x8.50-10 Bar (1.5 kgf/cm [22 psi] 150 kPa 18x8.50-10 Ind. (1.5 kgf/cm [22 psi] (1) Operator's seat (backhoe position) 2. Check of the ballast before operating the backhoe WARNING To avoid serious injury or death: BX23S, LA340, BT603...
Page 61: Operating The Engine
1. Make sure that the parking brake is set. If the parking brake is not set, see “To set the parking brake” in 3.1 How to use the parking brake on page (1) PTO clutch lever (B) Off (A) On BX23S, LA340, BT603...
Page 62 5. Place the range-gear-shift-lever (Hi-Lo) in the neutral “N” position. (1) Hydraulic control lever (N) Neutral position (A) Raised (B) Lowered Check that the implement is down at the lowest position after moving the hydraulic-control-lever forward. BX23S, LA340, BT603...
Page 63 ™ 2.1 Easy Checker on page pedal is in the neutral position and the PTO- clutch-lever position respectively. 13. Check to see that all the indicator lamps on the ™ Easy Checker are off. BX23S, LA340, BT603...
Page 64: Cold Weather Starting Of The Engine
• If the starter key does not stop the engine, Below -20 ℃ (-4 ℉) More than 15 minutes consult your local KUBOTA Dealer. JUMP STARTING THE ENGINE WARMING UP OF THE ENGINE Follow the instructions of jump starting of the engine to safely start the engine.
Page 65 9. Start the helper vehicle and let its engine run for a few moments. Start the disabled tractor. BX23S, LA340, BT603...
Page 66: Operating The Tractor
• Never try to get on or off a moving tractor or to jump off the tractor to exit. • Face the tractor when getting into or out of the tractor. Do not use the controls as hand-holds to prevent inadvertent machine movements. BX23S, LA340, BT603...
Page 67: Raising The Rops To Upright Position
• Hold the ROPS tightly with both hands and raise the ROPS slowly and carefully. CAUTION To avoid personal injury: • Make sure that both set pins are properly installed and secured with the snap pins. BX23S, LA340, BT603...
Page 68: Adjusting The Foldable Rops
3. Adjusting the foldable ROPS 1. Adjust free fall of the ROPS upper frame regularly. 2. If you feel less friction in folding the ROPS, tighten the nut until you feel the right friction in the movement. BX23S, LA340, BT603...
Page 69: Starting The Tractor
(5) Seat belt NOTE : • Adjust the operator's seat and suspension to ensure that the controls are comfortably at hand for the operator, ensuring that the operator maintains a good posture. (1) Tilt lever (A) Pull BX23S, LA340, BT603...
Page 70 (2) Parking brake lock pedal lock pedal while depressing (A) Depress brake pedal 5. Start the engine. STARTING THE ENGINE on page WARNING To avoid serious injury or death: • Read and understand “Safe operation” in this manual. BX23S, LA340, BT603...
Page 71 8. Accelerate the engine. 6. Hand accelerator lever on page (1) Hand accelerator lever (B) Decrease (A) Increase 9. Unlock the parking brake. See “To release the parking brake” in 3.1 How to use the parking brake on page BX23S, LA340, BT603...
Page 72: Stopping The Tractor
(A) Forward (1) Range gear shift lever (Hi- (B) Neutral position STOPPING THE TRACTOR (C) High (A) Low 1. Slow the engine down. 2. Depress the brake pedal. 3. After the tractor has stopped, disengage the PTO clutch. BX23S, LA340, BT603...
Page 73: Check During Driving
(6) Coolant temperature indica- 2.2 Fuel gauge on page cator • Coolant temperature gauge (3) Preheat (7) Low fuel indicator 2.3 Coolant temperature gauge on page (4) Electrical charge (8) Key switch • Hour meter 2.5 Hour meter on page BX23S, LA340, BT603...
Page 74: Fuel Gauge
If the needle of the coolant-temperature-gauge returns to the most bottom position, consult your KUBOTA Dealer. Once you turn OFF and when the coolant- temperature-gauge system gets back to normal, the needle points normal position again.
Page 75: Hour Meter
• Stop the engine and remove the key. Before getting off the tractor, follow the following procedure 1. Disengage the PTO. 2. PTO clutch lever on page (1) Hour meter BX23S, LA340, BT603...
Page 76: Techniques For Operating The Tractor
(1) Brake pedal (B) Push down parking brake (2) Parking brake lock pedal lock pedal while depressing (A) Depress brake pedal 5. Stop the engine. STOPPING THE ENGINE on page BX23S, LA340, BT603...
Page 77: Installing The Slow-Moving-Vehicle (Smv) Emblem To Operate The Tractor On A Road
3. Fasten the knob nut. – Always comply with federal and/or local 4. Set the SMV emblem. regulations for securement and transport Consult your local KUBOTA Dealer for further details. 3. Precautions for operating the tractor on a slopes and rough terrain WARNING To avoid serious injury or death: •...
Page 78: Directions For Use Of The Power Steering
• Turning the steering wheel all the way to the stop activates the relief valve. Do not hold the steering wheel in the stop for a long period of time. • Avoid turning the steering wheel while the tractor is stopped, or tires may wear out sooner. BX23S, LA340, BT603...
Page 79 • See 1. Operator's seat on page 48 when using the operator's seat in the tractor- driving-position. 7. For the tractor-driving-position, pull the seat-lock- lever up, and follow the reverse of the preceding procedure . BX23S, LA340, BT603...
Page 80 OPERATING THE TRACTOR (1) Seat lock lever (A) Release BX23S, LA340, BT603...
Page 81: Pto (Power Take-Off)
PTO clutch. Mid PTO To use the mid PTO, shift the PTO-select-lever to the mid PTO position and the PTO-clutch-lever to the position. The mid PTO is available for KUBOTA approved implements. BX23S, LA340, BT603...
Page 82: Pto Shaft Cover And Pto Shaft Cap
Keep the PTO-shaft-cover in place at all times. Keep the PTO-shaft-cap when the PTO is not in use. (1) Seat lock lever 7. Turn the operator's seat around rearward and lock the operator's seat at the backhoe position. REVERSING THE OPERATOR'S SEAT on page BX23S, LA340, BT603...
Page 83: Pto Drive Shaft
2. Shorten the inner-and-outer-guard-tubes to the marked position equally. 3. Shorten the inner-and-outer-sliding-profile-tubes by the same length as the inner-and-outer-guard- tubes. 4. Round all sharp edges off, remove burrs, and grease sliding profiles. BX23S, LA340, BT603...
Page 84: 3-Point Hitch And Drawbar
(5) Lower link (8) Hitch (3) Check chains (6) Top link holder (9) Holder plate Use the holder plate to hold the lower link higher while mowing with mid-mount mower only over uneven terrain. (9) Holder plate BX23S, LA340, BT603...
Page 85: 3-Point Hitch
If you pull from the top link, the rear axle, or any point above the hitch, the tractor can tip over rearward causing personal injury or death. (1) Adjusting turnbuckle (A) Groove (2) Lock nut BX23S, LA340, BT603...
Page 86 3-POINT HITCH AND DRAWBAR HITCH (1) Hitch BX23S, LA340, BT603...
Page 87: How To Use The 3-Point Hitch
2. Remove the snap ring and the clevis pin. Then remove the left and right lifting rod. 3. Remove the snap pin and the stopper pin. Then remove the check chain plate and lower links. Installing the 3-point hitch 1. Follow the reverse of the procedure of “Removing the 3-point hitch”. BX23S, LA340, BT603...
Page 88: Hydraulic Unit
3. Operate the engine at low idle speed for the Contact your KUBOTA Dealer for adjustment. following seconds to bleed air from the Operating the hydraulic control lever actuates the system.
Page 89: Auxiliary Hydraulics
(3) Power beyond hose (back- (B) From Backhoe (inlet) hoe) (C) Return to tank (4) Outlet hose (tractor) (5) Return pipe (tractor) Max. flow of the outlet hose 14 L/min (tractor) (3.7 U.S.gals./min) (1) Cardboard (3) Magnifying glass (2) Hydraulic line BX23S, LA340, BT603...
Page 90: Disconnecting Hoses For The Mower
5. Place the protective cap on the coupler of the inlet hose of the backhoe, the coupler of the outlet hose, and the power beyond hose. 6. Connect the outlet hose of the tractor to the coupler of power beyond pipe of the tractor. BX23S, LA340, BT603...
Page 91 1. Move the hydraulic lever rearward (the position) to raise the mower rear links to the highest position. 2. Set the cutting-height-control-dial to the top position. If you do not follow this procedure, damage of the mower rear link can result. BX23S, LA340, BT603...
Page 92: Hydraulic Control Unit Use Reference Chart
Weeder, ridger Earthmove, digger YES/NO scraper, and manure For implements with gauge fork rear carrier Tighten wheels, set the hydraulic control lever to the lowered Mower (mid-and rear- mount type), hayrake, (down) position all way. and tedder BX23S, LA340, BT603...
Page 93: Tires, Wheels, And Ballast
[22 psi] 108.5 N⋅m to 130.2 N⋅m 150 kPa Rear (11.1 kgf⋅m to 13.3 kgf⋅m) 18x8.50-10 Ind. (1.5 kgf/cm [80 lbf⋅ft to 96 lbf⋅ft] [22 psi] 2. Then recheck as the following table. SERVICE INTERVALS on page 113. BX23S, LA340, BT603...
Page 94: Front Wheels
• Before jacking up the tractor, park it on a firm and level ground and chock the front wheels. • Fix the front axle to keep it from pivoting. • Select jacks that withstand the machine weight and set them up as shown in the following figure. BX23S, LA340, BT603...
Page 95: Ballast
The amount of rear ballast should be Amount of water of tire of tire matched to job and the ballast should be removed when it is not needed. Air compresses like Water can not be Characteristic a cushion compressed BX23S, LA340, BT603...
Page 96 Rear wheel weight (option) You can install the rear wheel weight to the 3-point hitch. Consult your local KUBOTA dealer to use. (1) Rear wheel weight NOTE : • Besides the rear wheel weight, a 3-point kit is required for installing the weight.
Page 97: Operating The Loader
THE LOADER AND THE TRACTOR 1. Filling the bucket The rollback and lifting of the bucket will increase efficiency because a level bucket throughout the lifting cycle resists lifting of the bucket and increases effort of breakaway from the pile. BX23S, LA340, BT603...
Page 98: Precautions For Lifting The Load
• When transporting a load, keep the bucket as low as possible to avoid tipping, in case a wheel drops in a rut. BX23S, LA340, BT603...
Page 99: Dumping And Lowering The Bucket
(A) Float • The float position will also avoid mixing of surface material with stockpile material. The float position will reduce the chance of surface gouging while removing snow or other material, or when working with a blade. BX23S, LA340, BT603...
Page 100: Loading From A Bank
• It is important to keep the bucket level when big pile. Wheel width should not exceed the bucket approaching a bank or pile. This will help avoid width for the side cutting procedure. gouging the work area. BX23S, LA340, BT603...
Page 101: Peeling And Scraping The Ground
Also, tires enter the notch, adjust the boom cylinder to hold the lift control forward. maintain proper depth. The full weight of the bucket is scraping the ground. Use the heel of the bucket. BX23S, LA340, BT603...
Page 102: Backfilling
• Leave dirt in the bucket because dumping on each pass wastes time. BX23S, LA340, BT603...
Page 103: Precautions For Handling Large Heavy Objects
WARNING To avoid personal injury or death from crushing: • Do not utilize the valve lock for machine maintenance or repair. BX23S, LA340, BT603...
Page 104: How To Use The Quick Coupler
2. Raise the lever until it stops. (1) Main harness line (2) Cap connecting 2. Operating the control lever WARNING To avoid personal injury or death: • Valve lock does not lock out the switch- operated third-function hydraulics, which are BX23S, LA340, BT603...
Page 105: How To Use The Remote Control Coupler
• Do not use your hands to check for leaks. Relieving the hydraulic pressure 1. Move the key switch to the on position. NOTE : • Do not start the engine. BX23S, LA340, BT603...
Page 106: Front Guard (Option For The Quick Attach Coupler)
NOTE : • Your local KUBOTA dealer can supply parts to adapt couplers to hydraulic hoses. Disconnecting 1. Lower the implement first to the ground to release hydraulic pressure in the hoses.
Page 107: Using The Attachments (If Equipped)
DANGER To avoid personal injury or death: • Use of a non-KUBOTA attachment that does not comply with ISO24410 improper positioning of handle(s) or non-protrusion of...
Page 108 Attach and detach all compatible attachments using the same method. WARNING To avoid personal injury, death, or machine damage: • Never operate or transport the attachments which are not attached properly. • Always replace damaged hardware immediately. BX23S, LA340, BT603...
Page 109: Detaching The Attachments (If Equipped)
• Clean the saddle, the top of the attachment, and the latching-pin-slots of any dirt and debris before mounting an attachment to the quick-attach- coupler. BX23S, LA340, BT603...
Page 110: Pallet Fork (Option For The Quick Attach Coupler)
3. Push the lock lever and slide the fork slightly until the lock pin engages with one of the notches to lock the folk. Loader model LA340 and LA340S 109 kg Rated capacity at the center of the forks (240 lbs) 4.3.1 Assembling the pallet fork (option for...
Page 111 • Remove the loader from the tractor only when an approved bucket of the loader is attached to the tractor. 1. Dismount the loader following the instructions provided in HOW TO REMOVE THE LOADER on page 147. BX23S, LA340, BT603...
Page 112: Operating The Backhoe
• Put the boom-and-swing-lock-lever into the lock position when the backhoe is not in use or during transport. (1) Boom and swing lever The left lever controls the boom and swing circuits, and the right lever controls the dipperstick and bucket BX23S, LA340, BT603...
Page 113: Boom And Swing Lock Lever
WARNING To avoid serious injury or death: • When working on slopes, one stabilizer may be lower than the other. • When digging on a hillside, always dump the bucket on the uphill side of excavation. BX23S, LA340, BT603...
Page 114: Placing The Stabilizer On An Unusually Steep Slope
1. Digging with operating the dipperstick 1. Lower the bucket to the ground. 2. The same as with bucket digging, curl until the teeth of the bucket are flat on the ground. BX23S, LA340, BT603...
Page 115: Dealing With The Spoil Pile
TRANSPORTING OF THE BACKHOE WARNING To avoid serious injury or death: • Before transporting the machine, raise and center the boom, close the dipperstick, curl the bucket, engage the boom and swing locks and BX23S, LA340, BT603...
Page 116: Precautions For Driving To The Job-Site
Use the SMV emblem and warning flashers as required. (1) Boom lock pin (2) Swing lock pin • Put the boom-and-swing-lock-lever into the lock position. BX23S, LA340, BT603...
Page 117: Maintenance Of The Tractor
4 years Check every 1 year Power steering oil line Replace every 4 years Check every 1 year Fuel line Replace every 4 years Check every 1 year Intake air line Replace every 4 years (Continued) BX23S, LA340, BT603...
Page 118 • The items which is @ marked are registered as the emission-related-critical-parts by KUBOTA in the U.S.EPA nonroad emission reg- ulation. As the engine owner, you are responsible for the performance of the required maintenance on the engine according to the preceding instruction.
Page 119: Lubricants, Fuel, And Coolant Table
Oil amount when the oil level is at the upper level of the oil level gauge. The product name of KUBOTA genuine UDT fluid may be different from that in the operator's manual depending on countries or territories. Consult your local KUBOTA Dealer for further detail.
Page 120: Lubricants, Fuel, And Coolant For Other Than North American Market
We diesel fuel (10000 ppm) recommend the use of KUBOTA UDT or SUPER UDT fluid for optimum protection and • Diesel fuels specified to EN 590 or ASTM D975 are performance. Consult your local KUBOTA recommended.
Page 121: Biodiesel Fuel (Bdf)
• The KUBOTA warranty, as specified in the Owner's • Any mineral-oil-diesel-fuel, if used, must conform to Warranty Information Guide, only covers flaws in ASTM D975 (or the European EN590) Standard, as product materials and workmanship.
Page 122 Subsequently, run the engine at least the following minutes to remove all of the biodiesel from the fuel lines. Running the engine 30 minutes BX23S, LA340, BT603...
Page 123: Periodic Service Of The Tractor
(2) Hood If you should spill, wipe it off at once, or it may (3) Front guard cause a fire. • To prevent water condensation and water accumulation in the fuel tank, fill the tank before parking overnight. BX23S, LA340, BT603...
Page 124: Checking The Engine Oil Level
• Park the tractor on a firm, flat, and level surface, lower the implement to the ground, and shut off the engine. IMPORTANT : • If the transmission fluid level is low, do not run the engine. BX23S, LA340, BT603...
Page 125: Checking The Coolant Level
• Use clean, fresh, soft water and anti-freeze to fill the recovery tank. • If water should leak, consult your local KUBOTA Dealer. 1. Check to see that the coolant level is between the “H” and “L” marks of the recovery tank.
Page 126: Checking The Brake Pedal
• Check the connectors and the terminals for 2. Replace the gauge(s), the meter(s), or the Easy ™ looseness, contamination, overheated Checker if they are broken. discolored connections. • Check the instrument panel for correct operation of the switches and the gauges. BX23S, LA340, BT603...
Page 127: Checking The Movable Parts
DAILY CHECK OF THE TRACTOR PERIODIC SERVICE OF THE TRACTOR Consult your KUBOTA Dealer regarding maintenance, diagnosis, and repair. 12. Checking the movable parts 1. If any of the movable parts, such as levers and pedals, is not smoothly moved because of rust or...
Page 128: Checking The Opc (Operator Presence Control) System
“N” position. Do not get off the machine. 2. Depress the speed-control-pedal. The engine must shut off after approximately one second. If it does not stop, consult your local KUBOTA 3. Turn the key to the start position. Dealer.
Page 129: Cleaning The Lock Lever Shaft
It is important to check the battery periodically. • When exchanging an old battery for a new one, use the battery of equal specification in the following table. (1) Lever movable area BX23S, LA340, BT603...
Page 130: Battery Charging
2. Cleaning the air cleaner element WARNING To avoid serious injury or death: • Be sure to stop the engine and remove the key before cleaning the air cleaner element. BX23S, LA340, BT603...
Page 131: Checking The Fuel Filter
Replacing the air cleaner Every 1000 hours or every 1 year 1. Inspect the fuel filter. element whichever comes faster 2. After inspection of the fuel filter, if the fuel line and clamps are found damaged or deteriorated, replace them. BX23S, LA340, BT603...
Page 132: Adjusting The Fan Belt Tension
NOTE : speed-control-pedal. • If the fuel line is removed, be sure to properly • Consult your local KUBOTA Dealer for service. bleed the fuel system. 1. Bleeding the fuel system on page 137.
Page 133: Service Of The Tractor Every 200 Hours
IMPORTANT : Free travel of the brake pedal (0.4 in.) • To prevent serious damage to the engine, use only a KUBOTA genuine filter. 3. Extend the turnbuckle one additional turn. 4. Retighten the lock nut. 1. Remove the oil filter.
Page 134: Replacing The Transmission Oil Filter
Oil capacity with filter (3.3 U.S.qts.) • To prevent serious damage to the hydraulic system, use only a KUBOTA genuine filter. 1. To drain the used engine oil, remove the drain plug at the bottom of the engine, and drain the engine oil 1.
Page 135: Adjusting The Toe-In
(2) Tie rod 11.6 L Transmission fluid capacity (3.1 U.S.gals.) 1. To drain the used transmission fluid, remove the drain plug at the bottom of the transmission case and drain the transmission fluid completely into the oil pan. BX23S, LA340, BT603...
Page 136: Cleaning The Transmission Strainer
3. Drain the front-axle-case-oil completely into the oil pan. 1. When changing the transmission fluid, disassemble 4. After draining the front-axle-case-oil, reinstall the rinse transmission strainer with drain plugs. nonflammable solvent to completely clean off filings. 5. Remove the right and left breather plugs. BX23S, LA340, BT603...
Page 137: Replacing The Fuel Filter Element
IMPORTANT : • After the following minutes, check the front- • Consult your local KUBOTA Dealer for checking the axle-case-oil level again. If the front-axle- injection pressure of the fuel injection nozzle. case-oil level is lower than the prescribed...
Page 138: Antifreeze
Always use a 50/50 mix of long-life coolant and clean soft water in KUBOTA engines. Consult your local KUBOTA Dealer concerning coolant for extreme conditions. NOTE : • The following data represent industry standards that necessitate a minimum glycol content in the concentrated antifreeze.
Page 139: Service Of The Tractor Every 3000 Hours
2. If the power steering pressure hoses are found to be worn or damaged, replace or repair them at 1. Checking the injection pump once. • Consult your local KUBOTA Dealer for checking the injection pump. SERVICE OF THE TRACTOR EVERY 1 YEAR 1.
Page 140: Checking The Intake Air Line
(1) Hose (2) Hose clamps 5. Checking the engine breather hose • Consult your local KUBOTA Dealer for checking the engine breather hose. SERVICE OF THE TRACTOR EVERY 4 YEAR 1. Replacing the radiator hose (water pipes) 1.
Page 141: Replacing The Power Steering Hose
Tunring the key to on About 30 seconds • Consult your local KUBOTA Dealer for replacing the 3. Start the engine and run it for the following power steering hose. seconds, and then stop it. 3. Replacing the fuel hose...
Page 142: Replacing The Light Bulb
[Fuse box] Capacity FUSE no. Protected circuit Option (3rd -function) DC outlet Fuel pump Glow indicator Meter Stop solenoid Lamp Option (work light) Slow blow fuse Capacity Protected circuit 50 A Check circuit against wrong battery connection BX23S, LA340, BT603...
Page 143: Maintenance Of The Loader
2. With the engine off and the bucket on the ground, inspect all hoses for cuts or wear. Check for signs of leaks and make sure all fittings are tight. WARNING To avoid personal injury or death: BX23S, LA340, BT603...
Page 144: Service Of The Loader Every 20 Hours To 30 Hours
[150 lbf⋅ft] pressure to the bucket until the loader raises the front wheels slightly. Make sure that you can rotate the mounting pins easily, and then tighten all bolts and nuts. BX23S, LA340, BT603...
Page 145: Maintenance Of The Backhoe
Molybdenum disulfide. Recommended grease may filter screen and change the hydraulic fluid as specify “Moly EP” on its label. recommended in 3. Replacing the transmission oil filter on page 130 2. Changing the transmission fluid on page 131. BX23S, LA340, BT603...
Page 146: Service Of The Backhoe Every 50 Hours
2. Position the backhoe bucket to be removed, WARNING hydraulically, into this natural position, just touching To avoid serious injury or death: the ground. BX23S, LA340, BT603...
Page 147: Service Of The Bucket Teeth
You may remove and store the bucket teeth when work of drainage is required. Drainage type of work may not require the bucket teeth to trench. (1) Bucket (3) Bolt (2) Bucket teeth BX23S, LA340, BT603...
Page 148: General Torque Specification
77.5 to 90.1 N⋅m 7.9 kgf⋅m to 9.2 kgf⋅m 91.2 lbf⋅ft to 108 lbf⋅ft 124 to 147 N⋅m 12.6 kgf⋅m to 15.0 kgf⋅m 145 lbf⋅ft to 166 lbf⋅ft 196 to 225 N⋅m 20.0 kgf⋅m to 23.0 kgf⋅m BX23S, LA340, BT603...
Page 149 MAINTENANCE OF THE BACKHOE (A) Top of bolt (B) Length BX23S, LA340, BT603...
Page 150: Storage Of The Tractor
If the tractor must be stored outdoors, cover it with a waterproof tarpaulin. Jack the tractor up and place blocks under the front and rear axles so that all four tires are off the BX23S, LA340, BT603...
Page 151: Removing The Loader
(2) Boom fulcrum pin 3. Slide stand lever downward direction completely, and release the stand from the stand hook. (A) Angle between ground sur- face and bucket bottom Angle between ground surface and bucket About 20 degrees bottom (A) BX23S, LA340, BT603...
Page 152 (1) Loader control lever 8. Down the mounting levers of both sides as shown in the following figure. BX23S, LA340, BT603...
Page 153 [B] Tractor side (1) Coupler stay (2) Coupler stay for cab model (2) Connector [A] Mobile side 12. Unfasten the seat belt, turn the safety-lock-button counterclockwise to unlock it, and then raise the lever until it stops. BX23S, LA340, BT603...
Page 154: Storing The Loader
4. Repair or replace any worn, damaged, or missing parts. 5. Lubricate the loader as described 1. Lubricating the loader on page 139. 6. Apply a coat of grease to all exposed cylinder rods to prevent rust. 7. Repaint worn or scratched parts. BX23S, LA340, BT603...
Page 155: Reinstalling The Loader
(1) Side frame (A) 150 mm to 200 mm (2) Main frame (B) Center of side frames [A] LH [B] RH 2. Stop the engine and unfasten the seat belt. 3. Remove the protective cap. (1) Protective caps BX23S, LA340, BT603...
Page 156 Connect the connectors and the caps as shown in the follow figures. (1) Mounting lever 7. Fasten the seat belt. Start the engine and run at the following speed. Engine speed 1800 rpm BX23S, LA340, BT603...
Page 157 9. Slowly move the loader-control-lever to the dump position to lower the side frames into the main frames, and engage the left and right bosses of the side frames to the bosses of the main frames, as shown in the following figure (encircled (B)). BX23S, LA340, BT603...
Page 158 (1) Mount hook (2) Mounting lever (1) Mount hook IMPORTANT : • Make sure that the hooks at both sides are properly mounted on the main frame. BX23S, LA340, BT603...
Page 159 • Do not fold up the stand while the boom is go back to step 13. and take its following around its highest position. Otherwise the steps. stand links may get under an excessive 17. Hold the stand by stand hook. load. (1) Stand (2) Stand hook BX23S, LA340, BT603...
Page 160: Adjusting The Height Of The Lifting Stand
4. Make sure that the stand lever is at its low position as shown in the following figure. (1) Stand lever 5. Apply the adjusting bolts in the parts box to both the right and left stand adjusting blocks as shown in the following figure. BX23S, LA340, BT603...
Page 161 NOTE : • The position of the adjusting bolt is provisional and may be roughly set for now. 12. Adjust the adjusting bolt in the same way as for the stand on the left side of the loader. BX23S, LA340, BT603...
Page 162 (B) Adjusting range (3) Stand hook (4) Stand pin Adjusting range (B) ± 15 mm IMPORTANT : • Be careful not to allow the stands to go beyond their adjustable range. Otherwise the stands may get damaged. BX23S, LA340, BT603...
Page 163 29. Slide the stand lever upward direction, and then slide the stand lever left side completely as shown in the following figure. (1) Stand lever (3) Stand hook (1) Stand lever (2) Stand 20. Set the stand lever to the low position. BX23S, LA340, BT603...
Page 164 33. Look at the right and left side of the stands to make sure that the heads of the adjusting bolts are not pressed upon the stand. (1) Adjusting bolt [B] No good (2) Stand (A) Not pressed (3) Link 3 (B) Pressed [A] Good BX23S, LA340, BT603...
Page 165: Removing The Backhoe
1. Set the swing-lock-pin to prevent the pivoting of the boom before removing the backhoe. (1) Swing lock pin 2. Stand beside the rear tire, fold the boom and dipper completely, and dump the bucket to approximately 60 degrees. BX23S, LA340, BT603...
Page 166 10. Slowly release all hydraulic pressure by moving the hydraulic control levers of the backhoe in all directions. 6. Raise the backhoe by operating the stabilizers to the lowering direction until the mount bars hit to the guide stopper on the support hooks. BX23S, LA340, BT603...
Page 167: Storing The Backhoe
3. If you store the backhoe outside, cover the backhoe with suitable weather cover. Weather cover will keep moisture, dirt, and other airborne debris from getting into the system. 4. Repair or replace any worn, damaged or missing parts. BX23S, LA340, BT603...
Page 168: Reinstalling The Backhoe
(1) Mounting lever 9. Restart the engine. WARNING To avoid serious injury or death: • Do not move the joystick-control-lever to the swing position. BX23S, LA340, BT603...
Page 169 • Move the tractor, the loader, the backhoe to a vacant area and cycle all backhoe functions. Cycling all backhoe functions will check their operation and flow oil back through the system, filtering it, and refilling each circuit. Check the BX23S, LA340, BT603...
Page 170 REINSTALLING THE BACKHOE hydraulic oil level before putting the backhoe into full operation. LUBRICANTS, FUEL, COOLANT TABLE on page 115 for oil type and correct level. BX23S, LA340, BT603...
Page 171: Troubleshooting
• Adjust or replace the fan belt. • Dirty radiator core grille • Remove all trash. screens. • Coolant flow route corroded. • Flush the cooling system. If you have any questions, consult your local KUBOTA Dealer. BX23S, LA340, BT603...
Page 172: Options
OPTIONS OPTION ITEMS OPTIONS OPTION ITEMS Consult your local KUBOTA Dealer for further details of the following options. • 18 x 8.5-10 Turf Tire • 26 x 12.0-12 Turf Tire • Engine block heater For facilitating starting and reducing warm up period in cold weather.
Page 173: Index
142 Boom and swing lever..........108 boom and swing lock lever........109 Easy Checker (TM)............. 69 brake pedal..............48 checking.............. 122 adjusting..............128 electrical wiring checking.............. 122 checking and cleaning.........122 bucket changing..............142 BX23S, LA340, BT603...
Page 174 70 replacing..............133 injection pump fuel gauge..............70 checking.............. 135 checking.............. 119 instrument panel............44 fuel hose intake air line replacing..............137 checking.............. 136 fuel injection nozzle replacing..............137 checking the injection pressure......133 fuel line checking.............. 135 key switch..............45 BX23S, LA340, BT603...
Page 175 (option for the quick attach coupler) PTO shaft cap............. 78 assembling............106 PTO shaft cover............78 panel cleaning...............121 parking brake setting and releasing..........48 quick coupler parking brake lock pedal..........48 connecting and disconnecting......100 parking the tractor............71 BX23S, LA340, BT603...
Page 176 119 stabilizer warranty of the tractor..........26 placing..............109 water pipe (radiator hose) placing on an unusually steep slope....110 replacing..............136 stabilizer control levers..........109 weight stabilizer pads rear ballast............54 standard...............111 starting the tractor............65 BX23S, LA340, BT603...
Page 177 124 wheel tread..............89 BX23S, LA340, BT603...
Page 178 KUBOTA Corporation is ... Since its inception in 1890, KUBOTA Corporation has grown to rank as one of the major firms in Japan. To achieve this status, the company has through the years diversified the range of its products and services to a remarkable extent.

This manual is also suitable for:

Bx23s Bt603

Kubota LA340 Operator's Manual

Safe Operation

Servicing of Tractor, Loader, and Backhoe

Specifications of the Tractor

Specifications of the Loader

Specifications of the Backhoe

Implement Limitations

Instrument Panel and Controls

Pre-Operation Check of the Tractor

Pre-Operation Check of the Loader

Pre-Operation Check of the Backhoe

Operating the Engine

Operating the Tractor

Pto (Power Take-Off)

3-Point Hitch and Drawbar

Hydraulic Unit

Tires, Wheels, and Ballast

Operating the Loader

Operating the Backhoe

Maintenance of the Tractor

Periodic Service of the Tractor

Maintenance of the Loader

Maintenance of the Backhoe

Storage of the Tractor

Removing the Loader

Reinstalling the Loader

Removing the Backhoe

Reinstalling the Backhoe

Troubleshooting

Options

Index

Quick Links

Related Manuals for Kubota LA340

Summary of Contents for Kubota LA340

This manual is also suitable for:

Table of Contents