Mahindra JINMA20-30A Tractor ops n maintenanceManual

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

1 Preface Jinma series wheeled tractors （、、、、 JM-200 JM-204 JM-250 JM-254 M- 、） 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 . The tractors have the characteristics of saving energy , high efficiency , varied purpose ,beautiful appearance . If you buy them , you will get satisfactory economic profit from them . Jinma series wheeled tractors respectively adopt vertical and energy saving ，， diesel engine of 20 25 30Hp as their power ;they employ direct gears transmission between engine and transmission system . Jinma tractors have many types for you to choose . They not only have single stage clutch and dual stage clutch types , but also have two wheel and four wheel drive types .They also have creeper device for you to choose if you want your tractors to conduct ditching operation . They have perfect hydraulic suspension system in performance , wide thread driving tyres of good adhesive force and low pressure and reliable (crankpin type and circulating ball type) but also have hydraulic steering gear , the users can choose either of them . The products are featured by their favourable power ,relatively hight traction force , compact contruction , high transmission efficiency ,easy operation , convenient repair and maintenance ,economical oil consupmtion ,easy attachment of implements and good compreshensive usage . In order to help the customers master the Jinma series tractors' operation , adjustment and maintenance , and prolong their service life , make the best possible use of them and obtain ideal economic profit ,we compile the operation manual ,With regard to the operation and repair and maintenace , Please consult the operation manuals of the diesel engines . With the development of science and technology and varying in requirement of customers , the tractors are subject to improvements and perfection in their in their constructions which will be written about in next editions of the manual . Therefore , users of tractors are required to pay attention to where the manual differs from the actual tractors .

2 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. New tractors must undergo running according to the regulations before they are put into use. 4. It is prohibited to turn sharply with one-side braking while tractor runs at high speed in order to avoid overturning or parts damage. 5. Bolts or nuts of wheel disc and of other important parts should be checked regularly and be tightened if they are loose. 6. During transferring the tractor with a mounted implement, it is not allowed to drive the tractor at high speed in order to avoid damaging hydraulic lift system and suspension system. ℃ 7. After operation at the area of below 0 in winter, the water should be drained out at idle speed in order not to freeze and damage the tractor parts (not including anti- icing fluid).

1 CONTENTS …………………………………………………………………………………………… Preface (1) ……………………………………………………………………………………… Precautions (2) Ⅰ ……………………………………………………………… Chapter Main Specifications (1) Ⅱ …………………………………………………………… Chapter Operating the Tractor (5) ………………………………………………………………… 1.Fuel and lubricating oil (5) …………………………………………………………………………………… 2.Water (6) …………………………………………………………… 3.Running-in of unused tractor (6) ……………………………………………………………… 4.Controls and instruments (8) ………………………………………………… 5.Control and operation of the tractor (10) ……………………………………… 6.Control and operation of the working devices (14) …………………………………………………… 7.Use of the electrical equipment (16) Ⅲ ………………………………………… Chapter Technical Maintenance of the Tractor (19) ……………………………………………………………………… 1.Shift maintenance (19) ……………………………………………………………… 2.First class maintenance (19) ……………………………………………………………… 3.Second class maintenance (20) ……………………………………………………………… 4.Third class maintenance (20) ……………………………………………………………… 5.Fourth class maintenance (20) ………………………………………………………………… 6.Maintenance in winter (21) ……………………………………………… 7.Maintenance for storage of a long time (21) Ⅳ …………………………………………………………… Chapter Adjustment of Tractor (22) …………………………………………………………………… 1.Adjustment of clutch (22) ……………………………………………………………… 2.Adjustment of main drive (24) ……………………………………………………… 3.Adjustment of differential lock (27) …………………………………………………………………… 4.Adjustment of brake (28) ……………………………………………………………… 5.Adjustment of front axle (30) ………………………………………………………… 6.Adjustment of front drive axle (31) …………………………………………………………… 7.Adjustment of wheel tread (33) ……………………………………………………… 8.Adjustment of steering gear (34) …………………………… 9.Construction and adjustment of hydraulic hitch system (39) ………………………………… 10.Use and adjustment of air brake device of trailer (46) Ⅴ …………………………… Chapter Main Troubles of Tractors and Trouble Shooting (49) ………………………………………………………………………………… 1.Engine (49) ………………………………………………………………… 2.Transmission system (51)

2 ………………………………………………………………………………… 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 ……………………………………… and transmission system of JM series tractors (61) ………… 4.Specifications and distributions of oil seals in JM series tractor's chassis (63) …………………………………………………………………… 5.Sizes of hitch system (65) ………………………………………… 6.OECD approval No. of JM series tractors (67)

Ⅰ Chapter Main Specifications Model JM-200 JM-204 JM-250 JM-254 JM300A JM304A Type × 4 2wheeled × 4 4wheeled × 4 2wheeled × 4 4wheeled × 4 2wheeled × 4 4wheeled Overall dimen-sions (mm) Length Width(without ballast) Heitht(to steering wheel) 3080 1250/1410 1910 3080 1250/1410 1910 3080 1280/1440 1930 3080 1280/1440 1930 3200 1280/1440 1930 3200 1280/1440 1930 Wheel base (mm) 1465 1510/1560 1587.5 1588 Wheel tread (mm) Front wheel Rear wheel 1070 -1270 1040-1200 950 / 1050 1040-1200 1070 -1270 1040-1200 950 / 1050 1040-1200 1070 -1270 1040-1200 1050 1040-1200 Ground clearance (mm) 330 275 340 340 Turning radius (m) With one-side braking without braking ± 2.4 0.2 ± 2.8 0.2 ± 2.8 0.2 ± 3.0 0.2 ± 2.75 0.2 ± 3.0 0.2 ± 2.8 0.2 ± 3.0 0.2 ± 2.75 0.2 ± 3.0 0.2 ± 2.8 0.2 ± 3.0 0.2 Weight (kg) Construcional weight Min.working weight 1040 1160 1140 1270 1040 1060 1140 1270 1170 1290 1270 1400 （） Rated traction force N 4000 4800 5200 5980 5200 5980 （） Normal speed km/h six six six six eight eight ： Forward 1 st 2nd 3rd 4th 5th 6th 7th 8th ： Reverse 1st 2nd 1.99 0.37 3.94 0.73 6.57 1.22 9.21 1.72 18.2 3.39 30.36 5.66 1.58 0.29 7.3 1.36 1.68 0.31 3.31 0.62 5.52 1.03 7.75 1.45 15.3 2.85 25.5 4.76 1.33 0.29 6.15 1.15 2.06 0.38 4.07 0.76 6.79 1.27 9.52 1.78 18.8 3.51 31.4 5.85 1.63 0.30 7.55 1.41 1.73 0.32 3.42 0.64 5.71 1.06 8.01 1.49 15.8 2.59 26.4 4.92 1.37 0.26 6.35 1.18 2.12 3.24 5.08 7.00 9.82 14.97 23.49 32.38 2.79 13.52 1.77 2.69 4.23 5.83 8.18 12.46 19.56 26.96 2.32 11.25 Engine Model LL380 LL380 KM385 KM385 ZN390T ZN390T Type 3 cylinder ,vertical ,water - cooled , 4-stroke 1

Model JM-200 JM-204 JM-250 JM-254 JM300A JM304A Engine 12-hour power(kW)/rated speed r.p.m 14.7 14.7 18.4 18.4 22.1 22.1 × Bore Stroke(mm) × 80 90 × 80 90 × 85 90 × 85 90 × 90 95 × 90 95 Fuel consumption (g/kw·h) ≤ 245 ≤ 245 ≤ 245 ≤ 245 ≤ 255 ≤ 255 Oil consumption (g/kw·h) ≤ 2.0 ≤ 2.0 ≤ 2.0 ≤ 2.0 ≤ 2.72 ≤ 2.72 Net weight (kg) 250 250 250 250 230 230 Transmission Clutch Single disc,dry-friction constant mesh OR Dual stage ,gear operation Gear box （＋）× （）× Supr gear 3 1 2 compound , or supr gear 4+1 2compound Creeper can b chosen Intermediate drive × 1 2 spiral bevel gear Differential Closed with 2 planetary bevel gears Diffierential lock Claw type Final drive Internally meshed single spur cylindrical gear Walk and operatin g system Frame type Frameless rigid connection Front axle type inverted U pipe balancing arm side bevel gear drive inverted U pipe balancing arm side bevel gear drive inverted U pipe balancing arm side bevel gear drive Pendulum angle of front axle ° 12 ° 8 ° 12 ° 8 ° 12 ° 8 Tyres Front wheel Rear wheel 4.00-16 8.3-24 6.00-12 8.3-24 5.00-15 9.5-24 6.00-16 9.5-24 5.00-15 9.5-24 6.00-16 9.5-24 Tire infation （ pressure kPa) ： Front wheel ： Rear wheel （） in field （） transportation 200-250 100-120 120-140 180-200 100-120 120-140 200-250 100-120 120-140 180-200 100-120 120-140 200-250 100-120 120-140 180-200 100-120 120-140 Steering gear sphere worm steering Hydraulic steering gear may be chosen for all models Brake Foot - controlled shoes type Disc type 2

Model JM-200 JM-204 JM-250 JM-254 JM300A JM304A Hydraulic systems Type Half remote Hydraulic pump CBN-E306 gear pump CBN-E306 / 314 gear pump CBN-E306 gear pump CBN-E306 / 314 gear pump CBN-E310 gear pump CBN-E310 gear pump Hydraulic cylinder × Horizontal single− acting type63 100(mm) Distributor Slide valve regulating type Safety valve Direct-acting type × Rated lifting capacity (N mm) × 3600 610 × 3900 610 × 4200 610 × 4200 610 × 5000 610 × 5000 610 Safety valve release pressure(MPa) ～＋ 16 ( 0 1.6 ) Suspension mechanism Connection type of implements rear mounted - point hitch category 0 Ⅰ rear mounted - point hitch category Upper link-hole diameter(mm) × φ19.5 44 Lower link-hole diameter(mm) × φ22.5 35 Traction device Traction ground clearance(mm) 470 495 Traction pin diameter(mm) Φ20 Power-take- off Rear P.T.O shaft ， Nonindepender 540r/min or semi-independent 540r/min dual speed(540r/min ,1000r/min)can be chosen Electrical equipments and gauges System 12V ,negative pole connected with iron , single phase circuit Starter 、 12V 2.5kW or 3.0kW Generator 14V 350W Battery 6-Q(A)-80,80A·h 3

Model JM-200 JM-204 JM-250 JM-254 JM300A JM304A Electrical equipments and gauges Ammeter ＋（） -30~0~ 30 A Oil pressure gauge （） 12V 0~0.5 MPa Water temperature gauge ℃ 12V (40~100) pressure gauge 0~1.0 MPa Head lamp ND118-80T , 20/8W 12V Rear light WD115-2 , 20/8W.12V Direction light FT12 , 8W.12V Electric horn DL87-12 Main filling capacity (L) Fuel tank 19 19 19 19 24 24 Engine oil sump 5 Front drive axle ─ 4.5 / 6 ── 6 ── 6 Transmission box 11 14 11 14 11 14 Lifter 9 14 Steering gear 0.4 Cooling water 10 or 12 4

5 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 2) Cautions for filling fuel Using clear diesel fuel is an important factor to prevent troubles in engine and prolong the engine's service life. The followings should be observed during filling fuel: A. Fuel must be deposited for over 48 hours before fuel tank is filled with it. Fuel at the bottom should not be poured into the fuel tank. B. Filter fuel when filling fuel tank with it. C. Fuel filling devices must be kept clean. D. Fuel tank and fuel filter should be cleaned regularly, and deposited fuel should be drained out. Component Season and ambient temperature Oil specification Fuel tank Summer (ambient temp. above10 ℃ ) No.0, -10 light diesel fuel GB252-87 ℃ Winter (ambient temp. below10 ) No. -20 light diesel fuel GB252-87 Engine sump Lifter Oil pan of air cleaner Injection pump Hydraulic steering gear ℃ Ambient temp. below 0 No. 20 diesel engine oil GB5323-85 ℃ Ambient temp. at 0-25 No. 30 diesel engine oil GB5323-85 ℃ Ambient temp. above 25 No. 40 diesel engine oil GB5323-85 Transmission box Transfer case Front drive axle Mechanical steering gear Summer (ambient temp. above10 ℃ ) No. 40 diesel engine oil GB5323-85 ℃ Winter (ambient temp. below10 ) No. 30 diesel engine oil GB5323-85 Grease nipple Without consideration of season No. ZFG2 calcium base compound grease ZBE 36003-88 Bearing 60203Generator and starter Without consideration of season No. ZFG2 compound calcium base grease ZBE 36003-88

Mahindra JINMA20-30A Tractor ops n maintenanceManual

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