JAC HFC4DA1-2C, Руководство по обслуживанию

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PS
PS
PS PS PowerSteering
PowerSteering
PowerSteering PowerSteering System
System
System System
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9. Improper matching of system components before
leaving factory may lead to unable vibration
absorbing of pipeline as well as faults like
abnormal noise, failure of the system. Eg. In the
case of no noise reduction device or corresponding
vibration damper in the pipeline, there will be noise
and failure in the whole system. In this case, oil
pipe with different noise reduction effect may be
applicable instead. However, in such replacement,
there is a high demand of technical requirements
and it should be carried out by professional staff
from the manufacture for better troubleshooting.
Troubleshooting for abnormal noise:
1.
Clean the whole steering system and carry out air
bleeding for the system. Adjust belt tension or
replace the belt. Inspect and repair oil pipes, power
steering oil reservoir, power steering pump and
power steering gear, change with new power
steering oil and replace the power steering oil
reservoir.
2. Replace the steering high pressure oil pipe and a
new
one with vibration damping effect or
possessing good matching to the system may be
applied.
3. Inspect other rotating parts, tension the pulley, and
clean the power steering pump and power steering
gear. In special cases, it is necessary to replace the
power steering pump or power steering gear
assembly.
Arduous steering wheel operation:
1.
Dirty interior of the power steering oil reservoir,
blockage in the filter screen or low oil level in the
power steering oil reservoir.
2. A great quantity of air in the power steering system
3. Foreign matters in the steering system may lead to
seizure in the flow control valve of the steering
pump, serious wear of parts in the power steering
pump and internal leakage of the pump.
4. Excessive wear in the piston cylinder of the power
steering gear, poor sealing performance of the oil
seal, bonding or damage in the control valve.
5. Insufficient tire pressure, interference in the power
steering pump steering column , loose connection,
looseness or slipping of power steering pump belt
or loose mounting position of the pump
6. Loose bolts in joints of oil pipes which may lead to
steering oil leakage and insufficient flow in the
system.
Troubleshooting for arduous steering wheel operation:
1.
Inspect the power steering gear, control valve of
the power steering pump, oil reservoir filter screen
and steering oil, clean the whole power steering
system (it is preferable to clean with kerosene and
it is not allowed to disassemble the pump body.
Instead, remove bolts on the control valve chamber
of the pump and take out the pump body for simple
cleaning)
2. In the case of dirty power steering pump, it is
necessary to clean the interior and exterior of the
power steering pump and oil pipes (it is not
allowed to clean with cotton gauze or other
multi-fiber cloth but carry out cleaning with clean
brush). Pay attention to system cleanness and there
should not be any visible impurities entering the
pump and system.
3. Refill the oil reservoir to the specified oil level,
inspect or replace the oil reservoir.
4. Adjust the belt tension according to specifications
and tighten coupling bolts for every component.
5. Inspect joints of oil pipes and tighten connecting
nuts here.
6. Replace oil pipes, the power steering pump or the
power steering gear.
Emulsible foam in the steering power oil:
Fault cause:
1.
There is air in the steering system.
2. There is liquid leakage in the steering system.
Troubleshooting for the fault:
1.
Carry out air bleeding, inspect for oil leakage and
solve such problem.
2. Inspect the power steering oil reservoir and refill
the oil reservoir with oil.
Vehicle deviation (Carry out test runs in two directions
on the flat ground):
Fault cause:
1.
Looseness of the steering wheel ball joint or
improper front wheel alignment.
2. Twisted deformation or excessive wear in the
steering rod.
3. Maladjustment of preload of racks in the power
steering gear
4. Poor returnability of the steering wheel and
steering wheel tremble.
Troubleshooting for the fault:
1.
Adjust the front wheel alignment and steering
wheel ball joint.
2. Refill with steering oil and carry out air bleeding.
3. Adjust the preload of racks or repair racks in the
power steering gear.
4. Inspect and adjust every joints in the system
according to specifications.