lower the suspension mechanism for several times to observe if there is any abnormality. Then, hang a heavy
object with a mass of about 300kg or a matching farm implement with equivalent mass on the suspension
mechanism, enable the engine to run in the big throttle position, operate the distributor handle, and lift and lower
the suspension mechanism in the whole stroke for no less than 20 times. Check whether the hydraulic suspension
mechanism can be fixed at the highest position or required position, and check the lifting time and leakage.
When the tractor is stationary, the engine runs at low, medium and high speed. Operate the steering wheel
smoothly to the left and right for 10 times each. Observe the follow-up situation of left and right steering of the
tractor front wheel, normal sound, and convenient and smooth operation of steering wheel.
If any fault is found during running-in, the causes shall be analyzed and eliminated in time.
3.16.5 Empty-loaded and Load Running-in of Tractor
After idling running-in of the engine, and running-in of the power take-off shaft and hydraulic system, and
when it is confirmed that the technical state of the tractor is completely normal, the running-in of the whole
machine can be performed in according to Table 3-2. During idling running-in, turning operation shall be
performed at low speed and an unilateral brake shall be used properly, and the emergency brake test shall be
carried out at high speed.
After idling running-in, load running-in can only be carried out when the technical state of the tractor is
completely normal, and the load must be from small to large and the gears from low to high, one by one. During
running-in, attention must be paid to:
Observe whether the readings of electrical equipment and various instruments are normal.
Whether the engine runs normally.
Whether the clutch is engaged smoothly and disengaged completely.
Whether the gear shift of the gearbox is convenient and flexible, and whether there is any incorrect gear
engagement or automatic out of gear.
Whether the brake works reliably.
Whether the differential lock is reliably engaged and disengaged.
Whether the front drive axle is reliably engaged and separated.
In case of any fault, running-in can be continued after troubleshooting.
3.16.6 Technical Maintenance after Running-in
After running-in of the tractor, there will be some metal chips or dirt mixed in lubricating oil in the drive
system, lubrication system and hydraulic system. Therefore, all lubricating oil and hydraulic system oil must be
cleaned and replaced, and they can be put into normal use before necessary technical maintenance.
The technical maintenance after running-in is as follows:
After shutdown, drain the oil from the engine oil pan while it is hot, and clean the oil pan, oil filter
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