Baoli CPCD 80 - Page 75

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5.3.6 Steering unit troubleshooting
Problem
Possible cause
Remedy
Oil
leakage
Oil leaks from the connection surface of
valve body, stator and rear cap due to
the dirty.
Clean.
The rubber ring is worn.
Replace rubber ring.
The washer of limit bolt is uneven.
Grind or replace washer.
Hard
steering
operation
Oil pump can’t supply insufficient fuel.
Select appropriate oil pump or
check the divider.
Air mixed in steering system.
Vent air and check oil pipes.
Oil tank isn’t full.
Add oil to specified level.
Oil is too sticky.
Use recommended viscosity
oil.
The ball check valve inside the valve
body malfunctioning.
If the ball is lost, fit a Φ8 ball. If
the ball is blocked by the dirty,
clean it.
Oil pressure of the divider is lower than
the working pressure or the divider is
blocked by the dirty.
Adjust the pressure of the
divider or clean it.
Steering
malfunction
Spring piece is broken off. The hand
wheel can’t return to neutral position
automatically.
Replace the spring piece.
Shift arm is broken off or deformed.
Replace the shift arm.
Drive shaft is broken off or deformed
Replace the drive shaft.
Mutual position between the rotor and
the drive shaft is disorder.
Reassemble the rotor and the
drive shaft.
Bilateral overload valve is out of order.
(the steel ball is seized up by the dirty )
Clean the valve.
Handwheel
can’t return
to neutral
position.
1. Valve core and the column is
decentraction.
2. Valve core is propped by the column.
3. Hard to steer the column.
4. Broken spring piece
Readjust or replace.
No hand
steering
device
Radial and axial clearance between the
rotor and stator is improper.
Replace rotor and stator.