Dodge D150 1990 Service Manual page 800

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STEERING 19-21
SYSTEM SERVICE DIAGNOSIS (CONT'D)
CONDITION POSSIBLE CAUSE CORRECTION
(5)
Pump flow control valve sticking. (5)
Inspect for varnish or damage, replace
if necessary.
EXCESSIVE WHEEL
KICKBACK OR LOOSE
STEERING
(1)
Air in system.
(1)
Add oil to pump reservoir and bleed by
operating steering. Check hose connectors
for proper torque and adjust as required.
(2)
Steering gear loose on frame. (2)
Tighten attaching screws to specified
torque.
(3)
Steering linkage joints worn enough to be
loose.
(3)
Replace loose pivots.
(4)
Worn poppet valve. (4)
Replace poppet valve.
(5)
Loose thrust bearing preload adjustment. (5)
Adjust to specification with gear out of
vehicle.
(6)
Excessive overcenter lash.
(6)
Adjust to specification with gear out of
car.
HARD STEERING OR
LACK O F ASSIST
(1)
Loose pump belt.
(1)
Adjust belt tension to specification.
(2) Low oil level.
NOTE: Low oil level will also result in excessive
pump noise.
(2)
Fill to proper level. If excessively low,
check all lines and joints for evidence of
external leakage. Tighten loose
connectors.
(3)
Steering gear to column misalignment.
(3)
Align steering column.
NOTE: IF CHECKS (1)
THROUGH (5) DO NOT
REVEAL CAUSE OF
HARD STEERING,
REFER TO PRESSURE
TEST
(4)
Lower coupling flange rubbing against
steering gear adjuster plug.
(4)
Loosen pinch bolt and assemble properly.
(5)
Tires not properly inflated.
(5)
Inflate to recommended pressure.
Further possible causes could be:
(6)
Sticky flow control valve.
In order to diagnose conditions such as listed
in (6), (7), (8), (9) a test of the entire power
steering system is required.
(7)
Insufficient pump pressure output.
(8)
Excessive internal pump leakage.
(9)
Excessive internal gear leakage.
J8919-26