7
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2.1.2
Steering system common faults and troubleshooting methods
Failure
cause
maintenance
steering
hydraulic
system problem
1. There is air in the hydraulic pipeline
components of the steering system
exhaust
2, the working oil oil level is too low,
inhale air
Gas exhaust
3. The shunt valve hole is blocked and
the spool is stuck
Cleaning and replacement
4. The piston rod of the steering
cylinder is bent
Replace the piston rod
5, knuckle and knuckle pin bite
Check method: lift the rear axle to see
whether the swing is flexible
Dismantle, repair
6, other steering when the relative
surface bite
7. The steel ball in the valve body of
the steering gear fails and is blocked
Replacement spring
8, steering reset failure, spring
fracture
Check piston seal ring and replace
9. Leakage in the steering cylinder is
too large
Adjust pressure and flow
10, the shunt valve pressure is lower
than the working pressure, the flow is
too low
Use specified oil
11. The viscosity of oil is too large
replace
12, spool, valve body excessive wear,
clearance is too large
replace
13. Excessive wear of oil pump
exhaust
oil leak
1, the joint is not pry tight
Pry tight
2. There is dirt on the joint surface of
the stator and rear cover of the valve
body of the steering gear
cleaning
3, oil cylinder leakage
Check guide sleeve seal joint seal
Abnormal
sound
1, the oil level of the tank is too low,
hydraulic noise
Refueling and exhaust
2. Suction tank or oil filter is blocked
Cleaning and replacement
