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Page Title:
Figure 7-11. Table of Steering System Operational Tests (Sheet 1 of 2) |
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 TM 10-3930-623-34
Test For
Probable Cause
Remedy
Hard steering while driving
Frozen steering shaft bearings.
Replace bearings.
Steering wheel rubbing against
Adjust jacket endwise.
jacket.
Steering adjustment tight.
Check adjustment by dropping pitman
arm from gear or disconnecting linkage
from pitman arm ball. Readjust lash
adjuster if necessary.
Poor return of steering
Frozen steering shaft bearings.
Replace bearings.
Tight steering linkage.
Lubricate.
Steering adjustment tight.
Check adjustment by dropping steering
gear arm from gear or disconnecting
linkage from steering gear arm ball.
Readjust if necessary.
Tight sector to ball nut.
Adjust lash adjuster in truck to specifi-
cation.
Thrust bearing adjustment too tight.
Remove gear and adjust.
Sticky valve spool.
Remove and clean valve or replace valve
Tires not properly inflated
Inflate to specifications
Truck leads to one side or
Due to rear wheel misalignment.
Adjust to zero toe-in.
the other (not due to road
Unbalanced or badly worn valve.
Replace valve.
crown)
NOTE: If this is cause, steering
effort will be very light in direction
of lead and heavy in opposite direc-
tion.
Momentary increase in ef-
Low oil level in pump.
Check oil level in pump reservoir.
fort when turning wheel fast
High internal leakage.
Replace valve and/or cylinder.
External oil leaks (wipe gear
Loose hose connections.
Tighten.
thoroughly and make sure
source of leakage is deter-
Damaged hose.
Replace.
mined)
Adjuster plug seals.
Replace seals.
Torsion bar seal.
Replace valve.
Side cover preform packing
Replace packing.
Steering arm shaft seal.
Replace seal.
Gear noise
Loose over-center adjustment.
Adjust to specification.
(rattle or chuckle)
Gear loose on frame.
Check gear to frame mounting bolts.
Tighten bolts to specification.
(Figure 7-11 Sheet 1 of 2)
NOTE: A slight rattle may occur
(Figure 7-11 Sheet 2 of 2)
on turns because of the increased
lash off the high point. This is
normal.
Figure 7-11. Table of Steering System Operational Tests (Sheet 1 of 2)
7-22
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