POWER STEERING SYSTEM
SECTION X
TABLE 10-2. DRAG LINK VALVE TROUBLESHOOTING
PROBABLE CAUSE
REMEDY
TROUBLE
I.
Check pump with pressure gauge.
1. Insufficient pump pressure.
Hard steering.
2. Pump drive belt slipping.
2.
Tighten belt.
3. Low oil level.
3.
Refill reservoir and system.
Repair or replace relief valve.
4. Sticky relief valve.
4.
5. Piston in steering valve sticking.
5.
Overhaul valve a outlined in
service instructlons.
6.
Valve piston not traveling
6.
Adjust position of end plug per
instructions.
full stroke.
7.
7.
Select ring with smaller area.
Reaction ring area too high.
8.
Check cylinder for broken piston
8.
Excessive leakage in power
or rings. Check condition of
cylinder.
cylinder wall. Replace if necessary.
9.
Adjust in accordance with
9.
Steering gear not adjusted
manufacturers specifications.
properly.
10.
10.
Align in accordance with
Improper front end alignment.
manufacturers specifications.
1.
Check pump output and replace
1.
Low pump output
No recovery from turn to
if necessary.
straight ahead.
2.
2.
Disassemble valve and inspect
Piston in steering valve sticking,
for sticking.
(prevents centering).
3.
Adjust for proper clearance.
3.
Ball stud adjustment too tight.
4.
Readjust.
Steering linkage too tight.
4.
5.
Readjust per manufacturers
5.
Insufficient wheel caster.
specifications.
6.
6.
Readjust per manufacturers
Steering gear too tight (out of
specifications.
adjustment).
1.
Tighten and readjust.
Loose ball socket connections or
1.
Excessive lost motion at
other linkage connections.
steering wheel.
2.
Readjust per manufacturers
2.
Excessive back-lash in steering
specifications.
gear.
3.
Make adjustment as outlined in
3.
End plug on steering valve not
service instructions.
properly positioned.
Pump drive belt out of adjustment. 1.
Adjust.
1.
Noise.
2
Refill system.
2.
Low oil level.
3.
Bleed system by loosening fitting
3.
Air in system.
on power cylinder to let air escape.
Check all fitting connections for
tightness.
4.
Repair or replace.
4.
Worn pump.
5.
Insulate lines from frame contact
5.
Hydraulic hose lines in direct con-
with rubber grommets.
tact with vehicle frame or sheet
metal.
1.
Tighten and readjust.
1.
Loose ball socket connections
Steering shimmy or
or other linkage connections.
chatter.
2.
Wheels out of balance.
2 . Balance.
3. Correct and have alignment of
3
Excessive caster.
front end checked.
Excessive back-lash in steering gear
4. Readjust gear.
4.
5. Adjust belt tension.
5.
Loose pump belt.
6. Select rings with greater area.
6.
Area of valve reaction rings too
low.
10-15
