Page 1111 - Foton Workshop Manual - Auman EST-M

Steering System- Power Steering ST-43

Failure phenomenon list IN

Use the list below to help you find the reasons of failures. The number represents the order of failure reason
possibility Check each part according to the order and replace it when necessary DI
Failure phenomenon Possible reason Failure elimination

EG
Fill in the dynamic steering liquor, exhaust
1. Oil level low. Air gets into the oil-way
and tighten the pipe joint
The steering force
increases in a 2. The belt of steering oil pump (slippery) Tightening the belt TR
moment when turning
3. Steering oil pump (the flow is too small) Replace the steering oil pump
the steering wheel to
left or right suddenly 4. The oil pressure of oil pump is too low. Replace the oil pump AX
5. The internal leakage of steering gear is excessive. Replace the steering device
1. Oil level (too low) Fill oil according to the requirements FR
When the engine
steers, in particular 2. The belt of steering oil pump (too loose) Adjust the tension according to the specification
making a spin burn, the
Check the pump pressure (the pressure test is ST
steering wheel
3. The pressure of steering oil pump is insufficient. needed). If the pressure relief valve is
trembles and vibrates
damaged, replace it
BR
Fill in oil in the oil tank of oil pump, then
The steering wheel 1. Steering gear (with air) performing steering operation and exhaust the air
returns too much or
loose in steering 2. Steering gear(loose) Take off the steering device from the vehicle BW
for adjustment

Emulsion foam in
1. Oil is mixed with air. Exhaust EL
dynamic steering liquid

1.Hydraulic system (lack of oil) Oiling to specified height

Exhaust and check the oil level and the
2.Hydraulic system ( with air )
tightness of pipeline joints
Two side steering all
3. The filter screen of steering oil pipe(damaged or Replace the filter element and clean the inlet
heavy
blocked) line between the steering line and steering pump

4.The pressure of steering oil pump (insufficient) Check and repair the oil pump

5.The front wheel locks (the brake fails to return.) Check and repair the stuck part of brake

Oil tank lack of oil, fill in oil and check or
1.Oil supply for oil pump(insufficient)
repair the oil pump

2.Both sides of the piston inside the steering gear
Heavy in rapid steering (excessive oil leakage, mainly due to seal damage or Replace the oil seal
excessive abrasion)

Exhaust and check the tightness of
3. Suck air
connecting parts

1.The flow of steering oil pump (too large) Replace the oil pump

Steering 2. The bending radius of oil pipe is too small or the
gearoverheated (over internal disruption results in the poor smoothness of Replace the oil pipe
the environment oil flow and heating.)

temperature of 65°)
3. Steering to the limiting positions at the two ends Avoid steering to the limit positions at two

for more than 5 sec. ends

ST-043