STEERING
TRUCK SERVICE MANUAL
PROBLEM
POSSIBLE CAUSE
REMEDY
6. Excessive pump pressure-
Kink in oil return line
Relocate line to remove kink.
with steering gear in neutral
position
7. Erratic steering or no steering
a. Insufficient volume of oil being
Polish flow divider valve to remove
at all
metered by flow divider to steering
foreign particles and burrs. Refer to
gear induced by foreign particles on
pump servicing instructions.
flow divider valve, causing the valve
to hang up in the bore.
b. Flow divider spring takes
Replace flow divider spring.
Refer to
permanent set because of fatigue,
pump servicing instructions.
thereby allowing flow divider valve
to move easily and reduce oil
volume.
c. Broken bypass spring in flow
Replace with flow divider valve assembly,
divider.
which includes bypass spring. Refer to
pump servicing instructions.
8. Side motion in steering wheel.
Broken jacket bearing in steering
Replace jacket bearing.
column.
9. Excessive backlash
a. Worn universal joint.
Replace universal joint
b. Worn pins and keys, universal
Replace pins and keys
joint to actuating shaft and universal
joint to steering shaft..
c. Low oil volume.
Check flow divider and pump speed
belt(s).
d.
Pitman
arm
ball
worn
Replace pitman arm assembly where
"eggshaped."
riveted or ball only where bolted ball is
used.
e. Improperly adjusted drag link,
Adjust drag link, drag link to pitman arm
pitman arm to drag link and steering
and drag link to steering arm.
arm to drag link.
f. Loose bracket, frame to bracket
Remove bracket, clean frame and
or bracket to gear
bracket; check radius of frame making
sure bracket is not bearing on radius
surface; check bracket for wear from
working. Replace bracket and tighten to
recommended torque rating according to
size and grade of bolts. If necessary,
replace bracket with new one.
g. Worn or damaged actuating
Replace with actuating piston and valve
valve.
assembly.
h.
Rack
or
piston
worn
or
Replace with actuating piston and valve
damaged.
assembly
i. Worn or damaged pinion gear on
Replace pinion gear.
output shaft.
651
