Pontiac FIREBIRD 1972 Service Manual page 1157

-4 1972 PONTIAC SERVICE MANUAL
TROUBLE DIAGNOSIS (Continued)
POOR RETURN OF STEERING (Continued)
CAUSE
CORRECTION
e. Lower coupling flange rubbing against
steering gear adjuster plug.,
f. Steering gear adjustments tight.
g. Steering gear to column misalignment.
h. Rubber spacer in shift tube is rubbing
steering shaft.
e. Loosen coupling and assemble properly.
f. Check adjustment with pitman arm disconnected.
Readjust if necessary.
g. Realign steering column.
h. Make certain spacer is properly seated.
Lubricate inside diameter with silicone.
~ o u g h or broken steering shaft bearings.
Improper front wheel alignment.
. Sticky steering gear valve spool (P/S
i. Replace bearings.
j. Check and adjust as necessary.
k. Remove and clean or replace rotary valve.
quipped cars only).
rEERlNG WHEEL SURGES OR JERKS WHEN TURNING W I T H ENGINE RUNNING, ESPECIALLY
DURING PARKING
Follow steps below. If first step is O.K., proceed down list until problem
is corrected.
CAUSE CORRECTION
..
Fluid level low (P/S equipped cars only).
a. Fill fluid level to proper level and be sure
air is not present in system.
I. Loose pump belt (P/S equipped cars only).
:.
Steering linkage hitting engine oil
)an at full turn.
I. Sticky flow control valve (P/S equipped
:ars only).
I.
Steering shaft upper or lower bearing
ough or broken.
Vanes sticking in rotor slots or improp-
:rly installed (P/S equipped cars only).
b. Adjust belt.
c. Inspect linkage for damage and replace any
damaged parts.
d. Replace flow control valve.
e. Replace bearing if noise is present in steering
column.
f. Free-up by removing burrs, varnish or dirt.
Install properly.
POWER STEERING SYSTEM HAS SQUEAL OR SQUAWK W H E N TURNING STEERING WHEEL
Follow steps below. If first step is O.K., proceed down list until problem
is corrected.
CAUSE CORRECTION
a. Loose belt.
b. Glazed belt.
c. Power steering hose obstructed causing
excessive pump pressures.
d. Flow control valve sticking or binding.
e. Cut or worn dampener "0" ring or valve
spool.
f. Loose or worn rotary valve parts.
a. Tighten belt.
b. Replace belt.
c. Reposition hose.
d. Replace control valve if pressure test indicates
excessive pressures.
e. Replace dampener "0" ring being careful not
to cut new "0" ring at installation.
f. Replace rotary valve.