L10016 05/03 Hydraulic Check-out Procedure L10-7
Excessive free play at
steered wheels
Broken or worn linkage between
cylinder and steered wheels.
Leaky cylinder seals.
Check for loose fitting bearings at anchor
points in steering linkage between cylinder
and steered wheels.
Replace cylinder seals.
Binding or poor center-
ing of steered wheels
Binding or misalignment in steering
column or splined column or splined
input connection.
High back pressure in tank can
cause slow return to center. Should
not exceed 300 psi (2068 kPa).
Large particles can cause binding
between the spool and sleeve.
Align column pilot and spline to steering
control valve.
Reduce restriction in the lines or circuit by
removing obstruction or pinched lines, etc.
Clean the steering control unit. If another
component has malfunctioned generating
contaminating materials, flush the entire
hydraulic system.
Steering control valve
locks up
Large particles in spool section.
Insufficient hydraulic power.
Severe wear and/or broken cardan
shaft pin.
Clean the steering control unit.
Check hydraulic oil supply.
Replace pin or the steering control unit.
Steering wheel oscil-
lates or turns by itself
Lines connected to wrong ports.
Parts assembled incorrectly.
Check line routing and connections.
Reassemble correctly.
Steering wheels turn in
opposite direction
when operator turns
steering wheel
Lines connected to wrong cylinder
ports.
Correct cylinder port line connections.
TROUBLESHOOTING CHART
(Steering Circuit)
Trouble Possible Cause Suggested Corrective Action
To Next Page
