Chery automobile Service Manual page 301

piston; Weakening of the pressure regulator spring, damage on the seal components. Find
out the malfunctions and eliminate them. If necessary, replace the oil pump.
Steering wheel floating or deflecting when the Vehicle runs straight
Malfunction symptom
It is difficult to keep the vehicle running straight.
Malfunction reason
·
The steering control valve torque rod is damaged or too gentle to overcome the transmission
resistance of the steering gear, which does not enable the valve bush return in time.
·
The movement of the valve bush and valve core is clogged due to the unclean oil.
·
The steering core of the steering control valve is deviated from the center position.
·
The relief piston of the steering pump pressure regulator is clamped which makes the flux of
the pump and the pressure difference between the left and right power cylinders too large.
·
Clearance of the steering transmission mechanism connectors are too large, the connectors
are loose or overworn.
Diagnosis and Troubleshooting
·
First, check if the connectors of the steering transmission mechanism are loose, the
clearances of the components are too large, the transmission is slack, in order to eliminate
the trouble in the steering transmission mechanism.
·
Check if the oil is polluted. If the vehicle is new or repaired or the maintenance and
oil-change regulars are not carried out, the oil may be polluted. The polluted oil should be
replaced.
·
Check the steering control valve. Turn the steering wheel without starting the engine to
judge that whether the control valve can open and close smoothly. If there is abnormal,
disassemble and check it.
·
Finally, check if the pressure regulator of the steering pump works normally and the relief
piston is clogged. If necessary, measure the output pressure of the steering pump and then
judge it.
Steering noise
Malfunction symptoms
There is abnormal noise when the vehicle turns.
Malfunction reason
The noise in the steering system when the vehicle turns is normal; the noise in the early
N-24