Baoli CPCD 80, Operating And Servicing Manual

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5.4 Steering system troubleshooting
5.4.1 Inspection after reassembling the steering system
(1) Check the force when turning the steering handwheel to right and left until it
can’t be turned any more to see if they are identical each other and check the operation
if the steering handwheel for smoothness during above operation.
(2) Check the arrangement of the hydraulic pipeline and the turning direction for
correctness.
(3) Lift up the rear wheels and slowly turn the handwheel over several times to
exhaust the air in the hydraulic pipelines and the cylinder.
5.4.2 The troubleshooting of the steering system for the distributor valve is the
following table:
Problem Possible cause Remedy
Steering wheel is
caught when rapidly
turned.
Flow control valve spool
blocked Disassemble, repair or
replace
Flow control valve spool worn Replace as assembly
Oil pressure does not
rise.
Relief valve stuck open Replace as assembly
Oil pressure higher
than relief set
pressure.
Relief valve stuck closed Replace as assembly
Noisy relief valve Relief valve vibrating. Replace as assembly
Too high oil
temperature.
Relief valve stuck closed Replace as assembly
Hard steering
operation while idling.
Relief valve stuck open Replace as assembly
Flow control valve spool
blocked Disassemble, repair or
replace
Flow control valve spool worn Replace as assembly
Varying steering
force.
Relief valve vibrating. Replace as assembly
Flow control valve spool
blocked Disassemble, repair or
replace
Flow control valve spool worn Replace as assembly
Hard steering
operation.
Relief valve stuck open Replace as assembly
Flow control valve spool
blocked Disassemble, repair or
replace
Flow control valve spool worn Replace as assembly