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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)
×
φ
19.5
44
Lower link-hole diameter(mm)
×
φ
22.5
35
Traction
device
Traction ground clearance(mm)
470
495
Traction pin diameter(mm)
Φ
20
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
6
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. Boil hard water, then deposit for some time and filter.
B. Put 1.5g of caustic soda into one lit of hard water. When operating the tractor in cold
weather, add cooling water with freeze-proof liquid.
3. Running-in of unused tractor
The unused or overhauled tractor can not be put into operation unless it has undergone
running-in. Otherwise its performance will be affected and service life will be shortened.
1)Preparations before running-in
A.Clean the outside of the engine.
B.Inspect outside bolts and nuts, and tighten them if necessary.
C.Check the lubricating oil level, and refill to stipulated level if insufficient.
D.Inject grease into lubricating points.
E.Fill with fuel and cooling water
F.Check toe-in (4-10mm) and tire inflation pressure, readjust or reinflate if necessary.
G.Inspect the connections of battery and wires of electrical system.
2)Idle running-in of the engine
After the engine is started in accordance with specified steps, listen carefully and make
sure whether there is abnormal sound, check for leakage of water, air, oil and the readings of
the gauges. When it is made sure that the engine is in normal working condition, the next step
of running-in can be proceeded.
The unloaded running-in lasts 15 minutes, the first 7 minutes with minimum throttle, then
medium throttle for other 5 minutes and then lasts 3 minutes with full throttle.
3)Unloaded and loaded running-in of the tractor
The running-in of the tractor should be done at rated engine speed. The order and time of
running-in should be done according to the standard in Table 2-2.
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