Mahindra JINMA-200 Operation Manual
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Mahindra JINMA-200 Operation Manual

Jinma series wheeled tractors
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JINMA SERIES TRACTOR
OPERATION MANUAL
MAHINDRA YUEDA
(YANCHENG) TRACTOR CO.,LTD
JINMA-200
JINMA-204
JINMA-250
JINMA-254
JINMA-300A
JINMA-304A
.

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Summary of Contents for Mahindra JINMA-200

  • Page 1 JINMA SERIES TRACTOR OPERATION MANUAL JINMA-200 JINMA-204 JINMA-250 JINMA-254 JINMA-300A JINMA-304A MAHINDRA YUEDA (YANCHENG) TRACTOR CO.,LTD...

  • Page 2: Preface

    Preface Jinma series wheeled tractors （ 、 、 、 、 JM-200 JM-204 JM-250 JM-254 、 ） 300A JM-304A are small four wheel tractors of new type , which are developed according to the increasingly rising demands of dometic and overseas agricultural machinery for small new wheeled tractors .

  • Page 3: Precautions

    Precautions 1. Drivers should read the operation manual carefully and be familiar with the performance, operation and maintenance of the tractor. Otherwise we will not be responsible for any quality problems caused by improper operation. 2. Never fill the fuel tank with unfiltered or un-precipitated fuel. 3.

  • Page 4: Table Of Contents

    CONTENTS …………………………………………………………………………………………… Preface ……………………………………………………………………………………… Precautions Ⅰ ……………………………………………………………… Chapter Main Specifications Ⅱ …………………………………………………………… Chapter Operating the Tractor ………………………………………………………………… 1.Fuel and lubricating oil …………………………………………………………………………………… 2.Water …………………………………………………………… 3.Running-in of unused tractor ……………………………………………………………… 4.Controls and instruments ………………………………………………… 5.Control and operation of the tractor (10) ………………………………………...
  • Page 5 ………………………………………………………………………………… 3.Brake (52) …………………………………………………… 4.Steering gear and walking system (53) …………………………………………………………… 5.Hydraulic hitch system (54) …………………………………………………………………… 6.Electrical system (55) …………………………………………………………………… 7.Electrical system (56) Ⅵ ………………………………………………………………………… Chapter Appendix (59) ……………………………………………… 1.Wiring diagram of the electrical system (59) …………………………………………………… 2.Accessaries for customers to order (59) 3.Distribution diagram of rolling bearing ………………………………………...
  • Page 6 Chapter Main Specifications Ⅰ Model JM-200 JM-204 JM-250 JM-254 JM300A JM304A × × × × × × Type 2wheeled 4wheeled 2wheeled 4wheeled 2wheeled 4wheeled Overall Length 3080 3080 3080 3080 3200 3200 dimen-sions Width(without ballast) 1250/1410 1250/1410 1280/1440 1280/1440 1280/1440 1280/1440 (mm) Heitht(to steering wheel)
  • Page 7 Model JM-200 JM-204 JM-250 JM-254 JM300A JM304A 12-hour power(kW)/rated speed r.p.m 14.7 14.7 18.4 18.4 22.1 22.1 × × × × × × × Bore Stroke(mm) Engine ≤ 245 ≤ 245 ≤ 245 ≤ 245 ≤ 255 ≤ 255 Fuel consumption (g/kw·h) ≤...
  • Page 8 Model JM-200 JM-204 JM-250 JM-254 JM300A JM304A Type Half remote CBN-E306 CBN-E306 / 314 CBN-E306 CBN-E306 / 314 CBN-E310 CBN-E310 Hydraulic pump gear pump gear pump gear pump gear pump gear pump gear pump Hydraulic cylinder Horizontal single− acting type 63 100(mm) ×...
  • Page 9 Model JM-200 JM-204 JM-250 JM-254 JM300A JM304A ＋ （ ） Ammeter -30~0~ 30 A （ ） Oil pressure gauge 0~0.5 ℃ Water temperature gauge 12V (40~100) Electrical pressure gauge 0~1.0 MPa equipments Head lamp ND118-80T , 20/8W 12V and gauges Rear light WD115-2 , 20/8W.12V Direction light...

  • Page 10: Chapter Ⅱ Operating The Tractor

    Ⅱ Chapter Operating the Tractor 1.Fuel and lubricating oil 1) For fuel and lubricating oil for the tractor see Table 2-1. Table 2-1 Fuel and lubricating oil for the tractor Component Season and ambient temperature Oil specification Summer (ambient temp. above10 No.0, -10 light diesel fuel ℃...

  • Page 11: Water

    2.Water 1)Radiator should be filled with clean soft water so as to eliminate scale in the engine cooling system which will reduce cooling efficiency. Only after being softened can hard water such as well water, spring water, etc. be used. Method for softening hard water is as the follows: A.
  • Page 12 Table 2-2 Running-in standard of the tractor Running-in hours per gear Total Sum Running- Load in type 1st 2nd 3rd 4th 5th 6th R1st R2nd Unloaded Tractor only 0.5 0.5 0.5 With trailer loadedwith 1.2T goods onhighway Loaded transporta- tion Fitted with plough at plough depth about 13.3cm in light soil...

  • Page 13: Controls And Instruments

    working condition of the brake. F.Check on and tighten the nuts and bolts on all connection positions. G.Check on injector and valve clearance, adjust them if necessary. H.Check on working conditions of electrical system. I.Check on and adjust the toe-in of front wheel. J.Inject grease into each lubricating point.
  • Page 14 Fig.2-1 Controls and Instruments...

  • Page 15: Control And Operation Of The Tractor

    17) Two-position switch: Pull the switch to the first position, the headlights (lower beam) will be lighted, to the second position, the full-beam of the headlights will be lightened. 18) Starting switch: It has two functions: one is for switching on or off the circuit current and the other is as electrical starting switch.
  • Page 16 C. When switch starting, set the decompression lever to decompression position too. Turn the starting switch clockwise to "start" position, thus the engine is driven by starter, the starter must not be operated more than 5-10 sec. for each start. Only after an interval of not less than 2 minutes can the engine be started again.
  • Page 17 A.Lift the implement. B.Depress the clutch pedal, put the gear shifting lever into the desired lower gear, release the parking brake lock pawl of the brake pedal. C.Observe the environment to confirm that there are no obstructions on the road and sound the horn to call attention to the people.
  • Page 18 4) Stopping the tractor A. Throttle the engine down to lower the speed of the tractor. B. Depress the clutch pedal quickly and shift the gear-shifting lever to neutral position. C. Release the clutch pedal and let engine run idle. D.

  • Page 19: Control And Operation Of The Working Devices

    F. If front end of the tractor rises up in operation, throttle down the engine, disengage the clutch and reduce the load to protect the tractor from longitudinal overturning. If the engine runs away, immediately pull out the fuel cut-off rod, move decompression lever to "decompressing"...
  • Page 20 implement could be adjusted, if desired position of the implement has been got, set the position of the stopper on the return rod to limit the control lever. Tighten the stopper on the rod with screw, so that the lever can be pushed to the same position every time. Adjustment may be done during plowing period.

  • Page 21: Use Of The Electrical Equipment

    require any adjustment. Only if the right lifting rod is adjusted to its limits, the left lifting rod would be adjusted to obtain the uniform plowing depth. In order to obtain better plowing quality in actual operation, still need to adjust the plowing width according to the plow operation manual, so that the twifallow and omitted plowing won't happen.
  • Page 22 store the spare electricity produced by the generator. While the engine doesn't work or run at low speed, the stored electrical energy can supply electricity for all of the electrical devices and to start the tractor. While the engine overloads in a short time, the battery can help to supply electricity.
  • Page 23 of more than 100V is not allowed to check generator insulation; only multimeter of high resistance can be used to check the nature of generator insulation; otherwise the diode will be punctured. 3) The starter A. Keep the starter clean and the contacts between wires in good condition. B.

  • Page 24: Chapter Ⅲ Technical Maintenance Of The Tractor

    Chapter Ⅲ Technical Maintenance of the Tractor In order to keep the tractor in excellent condition, prolong its service life and reduce troubles, the users must often check the technical conditions of the tractor and strictly carry out technical maintenance of all classes. Table 3-1 Technical Maintenance Periodic Table Maintenance class Working hours of the tractor (h)

  • Page 25: Second Class Maintenance

    5) Check the oil level in transmission box and front drive axle, refill if necessary. 6) Wipe the battery with a piece of cloth, check the electrolyte level which should be 10- 15 mm above the polar plates, refill with distilled if necessary . Smear the terminals with grease to avoid corrosion.

  • Page 26: Maintenance In Winter

    7) Check and adjust the meshing backlash and print of the main drive bevel gears, the bearing clearance and preload of the bevel gears. 8) Clean the oil filter in the hydraulic lifting system, replace the oil in the system with fresh oil.

  • Page 27: Dual Stage Clutch Overview & Adjustment

    Ⅳ AChapdjustment of Tractor 1. Adjustment of clutch Due to continuous wear of parts during operation of the clutch, clutch slip and clutch incomplete disengagement will happen, which can't make the tractor work normally; therefore adjustment of clutch should be timely made. 1) Adjustment of dual stage clutch Fig.
  • Page 28 When adjusting the free travel of the clutch pedal (Fig. 4-1), firstly adjust the length of clutch push rod (15) to ensure that the clearance between end faces of three release levers and ± release bearing is 2.5 0.5mm and the idle travel of release rock arm is 3.5-5mm; after adjustment tighten it with nut M10.

  • Page 29: Adjustment Of Main Drive

    faces of release levers and the working face of pressure plate be B=45mm. When the clutch engages, the gap A=2-3mm between release bearing (9) and release levers (6) should be kept; and 3 working faces of the release levers (6) should be in the same plane , the allowed deviation is 0.25 mm.
  • Page 30 reducing axial displacement and increasing supporting rigidity of the spiral bevel gears under operation. After operation for a period, as the conical bearings wears, the former preload will disappear gradually, and moving clearance will occur between the two conical bearings when the two moving clearance is more than 0.1 mm, the conical bearings should be preloaded again.
  • Page 31 Coloring method is adopted in the inspection of the mesh print. Smear red-lead paint evenly on the faces of the bevel gear teeth. Turn the bevel gears several times until the distinct contact traces are imprinted on the teeth faces of the bevel pinion. The print imprinted on the teeth faces of the bevel pinion is mesh print.

  • Page 32: Adjustment Of Differential Lock

    c. Adjustment of mesh backlash and mesh print During adjustment, the bevel gear and pinion axially moving will change both mesh backlash and mesh print. If the mesh print requirement is contradictory to mesh backlash, correct mesh print should mainly be ensured, and the adjustment range of mesh backlash can be enlarged (Especially when the gear and bearing wears and the readjustment is needed, the backlash can be enlarged).

  • Page 33: Adjustment Of Brake

    4. Adjustment of brake After the tractor has worked for a period, the wear of the friction disc of the brake makes the gap between friction disc and brake drum or friction disc and brake case and brake cover increase and affect the brake performance. Excessive free travel will cause brake ineffectiveness.
  • Page 34 While left and right brake adjustment is unidentical and the tractor running in high speed is braked in emergency , unidentical tyre print length (left and right ) and yaw motion appear .In such case ,the brake pull rod should be shortened in the side with short print length of tire ,or vice versa, to make both sides of the driving wheels to be braked simultaneously and reliably ,then retighten the locking nut (9) .

  • Page 35: Adjustment Of Front Axle

    B. Travel adjustment of brake pedal Loosen the locking nut (7) on pull rod adjusting fork (6) and turn brake pull rod adjusting fork to change the length of the pull rod (8) until the displacement (from the highest position of the brake pedal to friction disc assembly being completely braked) of the brake pedal is 85-95mm.

  • Page 36: Adjustment Of Front Drive Axle

    should be made timely. During adjustment, firstly support the front wheels off the ground, and dismantle the bearing cover and pull out the split cotter on nut (6), then screw nut (6) until the bearing clearance is eliminated, and return the nut (6) in 1/15-1/7 turn, then lock the nut with split cotter, and assemble the bearing cover.
  • Page 37 2) Adjustment of side reduction gear pairs (Fig.4-10) During assembling, choose gasket (13) of driving shaft cover to keep the mesh backlash of side reduction gear pairs among 0.2-0.4mm, and ensure meshing contact traces.

  • Page 38: Adjustment Of Wheel Tread

    3) Adjustment of intermediate driven gear pairs (Fig.4-9) During assembling, choose adjusting shim (2) of the standing shaft to keep the mesh backlash among 0.2-0.4mm and ensure meshing contact traces. 7. Adjustment of wheel tread 1) Adjustment of front wheel tread The front wheel treads of Agracat Series Tractors have the following two types: adjustable wheel tread and non-adjustable wheel tread.

  • Page 39: Adjustment Of Steering Gear

    2) Adjustment of rear wheel tread The wheel tread of the back wheels can be steplessly adjusted through changing or turning over the fixed position of the driving wheel hubs in the driving shaft. It can be also adjusted in steps through turning over the wheel rims or exchanging the right and left driving wheels.
  • Page 40 A. Adjustment of bearing clearance In order to ensure the normal work of the steering gear, the clearance of the bevel bearings 7204 on either end of steering worm should be adjusted. When the bearings wear out to make the axial clearance increase, the clearance should be adjusted timely; i.e. make the upper and lower moving play of the steering worm be not more than 0.1mm through increasing or reducing the quantity of adjusting shim (11).
  • Page 42 Adjusting method: loosen nut (7), turn adjusting screw (8) to make rock arm shaft (2) move axially and therefore the mesh clearance is changed. When the rock arm shaft is in middle position, the free travel of steering wheel outside is °...
  • Page 43 Valve sleeve of the steering control valve (6) is connected with valve core (7) through plug (5), and spring leaf is fixed in the middle of the valve. The hole in the valve core (for mounting the plug) is a little bigger than the hole in valve sleeve (6), so they can rotate relatively, the outside of the valve core connects with connecting piece (1).

  • Page 44: Construction And Adjustment Of Hydraulic Hitch System

    the steering gear, which has been decided during designing; if the radial or axial clearance of the stator and rotor pair is too big to cause no manpower steering, then the rotor and stator pair should be replaced. In other conditions, adjustment is not needed. 9.
  • Page 45 With the rotation of the engine, the oil in the cavity will continuously flow into the lifter through gear pump. During working, there is pressure difference between the suck oil cavity and pressure oil cavity of the gear pump, the high pressure oil of pressure oil cavity will leak and return to the suck oil cavity along the clearance of the end faces of the gear and sleeve, gear tip and pump body and the clearance formed by bad gear mesh;...
  • Page 46 through returning oil cavity A according to the flow direction designated by the arrow of the Fig4-19(b). Then the entering oil cavity B and returning oil cavity C of the cylinder are sealed by main control valve (1); the oil cylinder is on seal and lock condition, and the implements are maintained in the fixed position.
  • Page 48 B. Working principle of lifter Fig.4-20 is a working principle diagram of position adjusting of the lifter (with simple direction exchange valve and high adjustable performance). While pulling the operation handle (10) to lowering position, position locating steel ball (8) falls into lowering the position locating slot B on position locating block (7), meanwhile main control valve (5) moves right to the lower position.
  • Page 49 tension of return spring (6) of the main control valve, operation handle (10) and main control valve (5) jump back to the neutral position at the same time. And the cylinder stops returning oil, the implement also stops falling. Thus, the falling of the implement depends on the fixed position of lowering return stop block (3) on return push rod (4) i.e.
  • Page 50 rod (4). The closer the clearance between return stop block (1) and return push rod (4) is, the higher the implement rises. Notes: During operation, if the adjustment is not suitable, it possibly makes the operation handle can not return to its position in time, and can cause parts damage due to overload of hydraulic system.

  • Page 51: Use And Adjustment Of Air Brake Device Of Trailer

    depth is reached, adjust the clearance between lowering stop block (3) and stop pin (4). After adjustment, fix stop block (3) on return push rod (5) with bolt and nut, then raise the implement several times to check the adjustment. If the implement is provided with a supporting wheel, the floating control needs to be used.
  • Page 52 In order to ensure safety of the trailer transportation of the tractor and achieve the aim of prompt stop of the tractor and trailer, air brake system is mounted on the tractor. The system is made up of air compressor (1), receiver (5), brake valve (4), air pressure gauge and pipes (Fig.4-23).
  • Page 53 valve seat spring, and reseal the passage between receive and the left and right brake air chamber of the trailer. At this moment the waste gas (compressed air) in left and right air chamber will go into the air through pipes, hole B of brake valve, inner hole of core rod and inner hole C of tappets.(Fig.4-24).

  • Page 54: Chapter Ⅴ Main Troubles Of Tractors And Trouble Shooting

    Ⅴ . Main Troubles of Tractors and Trouble Shooting 1. Engine 1) Adjustment of dual stage clutch Cause Remedies Pour hot water into the radiator or preheat the oil 1.Weather cold before pouring it into crankcase Check and clean the fuel pipe line and filter 2.Fuel flow unsteady element Remove the air and tighten all fuel pipe...
  • Page 55 3) Engine does not develop full power Check if the engine can be cranked by hand . If not , the cause may be as follows. A.Crankshaft and bearing seized up Repair or change them Cause Remedies Check if oil gallery is stopped up and if the oil in 1.Oil not enough or broken off crankcase is enough Check if the oil has been diluted by the leakage...

  • Page 56: Transmission System

    4) Engine smoking abnormal Cause Remedies Lighten the load . If the matching of engine and 1.Engine overloaded driven unit is inadequate ,correct it . 2.Black smoking becasue of second compression ring fitted inversely or Refit the ring or change the oil scraper ring. oil scraper ring worn out badly 3.While smoke because of fuel Ringse fuel tank and filter with filtered fuel.

  • Page 57: Brake

    2) Incomplete disengagement of clutch and difficult shifting Cause Remedies 1.Excessive or too small free travel Readjust according to requirements 2.Unidentical clearance between 3 Readjust according to requirements release levers and release bearing 3) Abnormal noise in gearbox Cause Remedies 1.Excessive wear or cracking of the Replace gears gear teeth faces...

  • Page 58: Steering Gear And Walking System

    2) Riding direction change with braking on both sides of driving wheel Cause Remedies 1.Right and left brake pedal travel Readjust brake pedal travel different Flush the stained linings with gasoline and 2.One side of brake linings stained oil remove 3.Wear on right and left friction Adjust or replace friction linings linings unidentical...

  • Page 59: Hydraulic Hitch System

    3) Oscillation of the front wheels Cause Remedies 1.Excessive clearance of tapered roller bearing on front wheel or bearing worn Readjust clearance or replace the bearing 2. Ball pins or joint seat worn out Replace ball joint or ball joint seat 3.
  • Page 60 6. Trailer air brake system 1) Insufficient air pressure Cause Remedies 1. Air pump belt is too loose Adjust tightness of belt or replace belt Check out the leaking position and remove 2. Pipe connectors leak breakdowns 3. Inlet and outlet valve of air compressor Grind valve seat, replace spring not sealed and spring damaged 4.

  • Page 61: Electrical System

    7. Electrical system 1) Starter Cause Remedies 1. Starter is out of running ⑴ Connecting wire broken or poor contact Weld or tighten the nuts on contacts of connecting wire ⑵ Low voltage of battery Recharge or replace battery Clean surface of commutator or replace ⑶...
  • Page 62 Cause Remedies ⑵ Each or both of the diode damaged Replace ⑶ Generator belt too loose Adjust to tighten belt 3. Unsteady current ⑴ Generator belt slips Remove oil dust or adjust belt tension ⑵ Poor contact of recharged circuit Check and remove ⑶...
  • Page 63 3) Battery Cause Remedies 1. Frequently insufficient electric power ⑴ Breakdowns of generator or regulator Repair generator or regulator or no charging electric current ⑵ Check to see whether terminals and bolts ⑵ Loosened connecting wires of charging of connecting wires are loose or not and circuit or rust making resistance increase tighten them, or remove rust ⑶...

  • Page 64: Wiring Diagram Of The Electrical System

    Chapter Appendix Ⅵ 1. Wiring diagram of the electrical system 2. Accessories for customers to order Customers may order and purchase the following accessories of the tractors from our factory according to requirements:...
  • Page 65 Serial No. Name Quantity Purpose High-lugged tyres One pair Used in paddy field Turf tyres Two pairs For garden use Improve driver's working condition Protective roll bar Ensure safety of drivers Belt pulley For fixed operation...

  • Page 66: Distribution Diagram Of Rolling Bearing And Transmission System Of Jm Series Tractors

    3. Distribution diagram of rolling bearing and transmission system of Jm series tractors...

  • Page 68: Specifications And Distributions Of Oil Seals In Jm Series Tractor's Chassis

    4. Specifications and distributions of oil seals in JM series tractors' chassis Parts Specifications positions PD35 × × Front end of 1st shaft SD35 Inside bearing cover of PTO shaft × × PD50 Outer of driving shaft bushing × × JB2600-80 Outer of bearing seat of final transmission Oil seal...
  • Page 69 Parts Specifications positions Non-standard oil seal of standing shaft Lower part of steering kunckle of front axle × × Non-standard × × 11.5 Inner end of front wheel hub oil seal of standing shaft Upper part of left end right steering GB3452.1-82 kunckle O-ring...

  • Page 70: Sizes Of Hitch System

    Parts Specifications positions Qty. JB2600-80 SG42 × × 10 Outside of lift shaft Oil seal Lifte Inside of oil drain plug × 13.2 × 2.65 Joint of distributor and lifter GB3452.1-82 13.2 2.65 Outside of pressing screw plug of lifter ×...

  • Page 72: Oecd Approval No. Of Jm Series Tractors

    6. OECD approval No. of JM series tractors Model JM-180 JM-200 JM-204 JM-254 OECD Approval No. 1354 1563 1657 1650 (Full code) OECD approval No. of tractors to which the protective structure are fitted Model OECD approval number JM-180 NT/ROPS - R/S0110/4 JM-184 NT/ROPS - R/S0110/3 JM-200...
  • Page 73 MAHINDRA YUEDA (YANCHENG) TRACTOR CO.,LTD. Add. : 90# South Wengang Road Yancheng City, Jiangsu Province ： Tel 0086-515-88231130/88231131 ： Fax 0086-515-88229791 ： Postcode 224002 ： Tttp //www.jm-tractor.com ： E-mail tractorobd@yantuo.cn...

This manual is also suitable for:

Jinma-254Jinma-300aJinma-304aJinma-204Jinma-250

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