H-17
35 Series 4WD, Model - 3535, 4035, 4535 and 5035 SM June’08
Worn or malfunctioning pump. Replace pump.
Malfunctioning relief valve Replace the relief valve.
allowing the system pressure to
be less than specified.
Overloaded steer axle. Reduce load.
Air in the system due to low Correct.
level of oil, cavitating pump,
leaky fitting, pinched hose, etc.
Worn mechanical linkage. Repair or replace.
Bending of linkage or cylinder rod.
Repair or replace.
Wear in steering control unit.
Replace the steering control unit.
Worn or damaged steering linkage. Replace linkage and align front end.
Leakage of cylinder piston seals Replace seals or accessory valve.
or accessory valve between
cylinder lines or ports.
Worn steering control unit meter. Replace steering control unit.
Thermal Shock * Check unit for proper operation
and cause of thermal shock.
9. TROUBLE SHOOTING
Most steering problems can be corrected if the problem is properly defined. The entire steering system
should be evaluated before removing any components. The steering control unit is generally not the cause
of most steering problems. The following is a list of steering problems along with possible causes and
suggested corrections.
TROUBLE PROBABLE CAUSE REMEDY REF.
A. Slow steering,
hard steering,
or loss of
power assist.
B. Wander -
Vehicle will
not stay in a
straight line.
C. Drift - Vehicle
veers slowly
in one
direction.
D. Slip - A slow
movement of
steering wheel
fails to cause
any movement
of steered
wheels.
E. Temporary
hard steering
or hang-up
SteeringSteering
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