TRUCK SERVICE MANUAL
LOST MOTION AT STEERING WHEEL
1. Loose ball socket connections or other linkage
adjustment and/or worm adjustment.
3. Steering wheel loose on shaft.
4. Pitman arm loose on output shaft.
5. Steering gear loose on frame.
6. Loose connections between steering column and
1. Restriction in pressure or supply line due to severe
bend, kink, or clogging by dirt, sludge, or other impurities.
Should be accompanied by high back pressure. 2.
Undersize line, hose or fitting. 3. Vehicle overloaded
causing pump relief valve to operate excessively
during docking or other maneuvers. 4. Poppets not
properly adjusted to relieve pressure at full turn in
each direction. 5. Overheating can damage seals in
both pump and steering gear.
6. Overheating may be evidenced by seals becoming hard,
discoloration of internal parts of the gear and an
"TIPS" FOR MAINTENANCE OF STEERING GEAR SYSTEMS
1. Always check for wear in steering linkage and other
system components first, before making adjustments
to steering gear assembly.
2. Prevent internal bottoming of steering gear . . .
Carefully check axle stops.
3. Make periodic checks of lube level for steering gear
and components to prevent malfunction due to
4. Make routine and/or periodic checks for proper front
5. Maintain correctly inflated tires.
6. Always use a "puller," never use a torch or hammer
to remove steering arms.
7. Always carefully examine all steering parts which
have been subject to "impact" and replace any that
8. Investigate immediately, and correct cause of any
play, rattle, or shimmy in any part of the linkage or
9. Remove cause of steering column misalignment, and
if necessary elongate support bracket holes at dash.
10. Encourage all drivers to report any malfunction or
accident that could have damaged the steering
II. Do not attempt to weld any broken steering
component. (Replace only with original equipment.)
12. Do not cold straighten, hot straighten or bend any
steering system part.
13. Always use new seals and "O"-rings during repairs
14. Replacement of single bearing assemblies, or balls,
if one or more make a "set" is not recommended.
15. Excessive heat will develop if any power steering
gear is held in an extreme right or left turn longer
than a few seconds. (Heat developed can damage
seals and/or pump.)
16. Prevent dirt or foreign particles from entering
hydraulic steering system's. (Always clean off
around filler caps, before removing to check oil
17. Use care to prevent even minor hydraulic leaks to
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