Index Tractors JINMA SERIES TRACTOR (200, 204, 250, 254, 300A, 304A) - service repair manual
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7
Table 2-2 Running-in standard of the tractor
Matters needing attention during running-in process:
A.Check on whether the engine runs normally.
B.Check on whether the adjustment of the clutch is normal and the disengagement is
complete.
C.
Check on whether the gear shift of the gearbox (including front drive handle,
creeper) is light and flexible, and there is any automatic gear disengagement and gear-shifting
lock.
D.Check on the function or reliability of the brake.
E.Check on whether the steering gear is flexible.
F.Check on whether the gauges and electrical equipments are normal and reliable.
During the running-in process, if any abnormal phenomena or failures appear, the
cause
should be found out and corrected, then the running-in can be carried on.
After the running-in is completed, the tractor must be undergone the following
maintenance before being put into operation:
A.
After the tractor has been stopped, drain out the lubricating oil in the engine sump
while it is still warm. Wash the sump and oil filter with diesel fuel. After the diesel fuel has
been out, refill the sump with new lubricating oil to specified level.
B.
Drain out the lubricating oil in the transmission box, hydraulic system and front
drive axle while it is still warm. Then fill them with diesel fuel of proper quantity and run the
tractor in 2nd forward and 1st reverse gears for 2-5 minutes for cleaning. As soon as the
tractor is stopped, drain out the diesel fuel immediately and then refill new lubricating oil to
specified level.
C.Clean fuel filter (including filter cartridge in fuel tank) and air cleaner.
D.Drain out cooling water, clean the cooling system of engine with clean water.
E.Check on and adjust the free travel of clutch pedal, the travel of brake pedal and the
Running-
in type
Load
Running-in hours per gear
Total Sum
1st
2nd
3rd
4th
5th 6th R1st
R2nd
Unloaded
Tractor only
1
1
1
1
0.5
0.5
0.5
0.5
6
Loaded
With trailer
loadedwith 1.2T
goods onhighway
transporta- tion
1
2
4
4
2
2
15
31
Fitted with plough at
plough depth about
13.3cm in light soil
1
2
4
3
10
8
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.
4. Controls and instruments
In order to operate the tractor correctly, it is necessary to familiarize the function of
all controls and instruments as well as their positions on the tractor (Fig.2-1).
1) Auxiliary gear shifting lever: To control the auxiliary speed gear. (Fig.2-2).
2) Main gear shifting lever: To control the main speed gear. (Fig.2-2).
3) Gear shifting pattern plate: It is located on the top of gearbox cover to show the
positions of gear shifting lever.
4)
Control lever of front drive axle: Engage or cut off the power of front drive axle to
achieve 4-wheel drive or 2-wheel drive.
5) Steering wheel: It controls the direction of tractor running.
6) Clutch pedal: Depress the pedal, then the clutch is disengaged.
7) Decompressing lever: Reduce the pressure in the cylinders to make the engine start
easier.
8) Extinguishing lever (Fuel cut-off rod): To make the engine stop.
9)
Single-position switch: Pull the switch out, the rear work light is turned on and
push the switch in, it is turned off.
10) Turning signal switch: Turning the switch to the left or right, the left or right
turning signal light will flash to show in the left or right turning.
11) Horn button: Press the button to sound the horn, and it will send out alarm signals.
12) Ammeter: It indicates the current intensity of battery while being charged or
discharged. If the pointer deflects to "+" side, it means that the battery is being charged; if to
"-" side, it is being discharged.
13) Water temperature gauge: Indicates the water temperature of the engine cooling
system.
14) Tachometer :It irdicates the speed and accumulated working time of
the engine.
Air pressure meter : It indicates the air pressure of the brake system(fror 2WD).
15) Oil pressure gauge: It indicates the oil pressure in main oil lines of the engine, the
normal oil pressure is 2-4 kgf/cm
2
(0.2-0.4MPa).
16) Fuel gauge: It indicates the fuel level of the fuel tank.
9
Fig.2-1 Controls and Instruments
10
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.
19) Hand throttle: Pull the hand throttle backward, the fuel flow will increase while
push it forward, fuel flow will decrease.
20) Creeper shifting lever: To exchange the normal speed and creeper speed.
21)
Left and right brake pedals: Turn the braking lock plate right to make left and
right pedals
connect with each other and brake at the same time; while separating the
braking lock plate can achieve left or right one-side brake, then one-side brake and turn can
be made.
22) Foot throttle pedal: Depress the pedal down, the fuel flow will increase; loosen it,
the fuel flow will decrease.
23) Parking brake lock pawl: Put the brake lock pawl on the left brake pedal into the
teeth of the brake teeth plate at the right side of transmission box to keep the brake for a long
period.
24) P.T.O control lever: Engage or disengage P.T.O power.
25) Differential lock lever: Used to move right claw to make differential lock
disengaged or engaged so that the two driving wheels have different speeds or not.
26) Hydraulic control lever: When the lever is pushed or pulled backward, forward or
into vertical position respectively, the hitch is lifted, lowered or in neutral position.
5. Control and operation of the tractor
1) Starting engine
Before starting the engine, check fuel, lubricating oil and cooling water. Check and make
sure every component and electrical system work correctly, drain out the air in the fuel lines,
put gear shifting lever in neutral position. If the hydraulic system is installed on the tractor,
caution: check whether enough hydraulic oil is filled in the lifter housing.
After the prestarting preparation, start the engine.
A.Set to decompress and rotate the engine crankshaft several turns with the hand
starting handle, check and make sure all moving parts work correctly, and pump oil to
surfaces of moving parts.
B.
When starting the engine with the hand starting handle, set the hand throttle to full
open position, put the decompression lever to the decompression position, accelerate the
cranking, the engine will be started along with the decompression lever return automatically
to original position.
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