Front Wheel Tramp At High Speeds; Road Shock Or Steering Kick Back Over Rough Roads Or Bumps; Hard Steering - Pontiac FIREBIRD 1972 Service Manual

FRONT SUSPENSION 3-3
TROUBLE DIAGNOSIS (Cmtinued)
FRONT WHEEL T R A M P A T H I G H SPEEDS
Follow steps below. If first step is O.K., proceed down list until problem
is corrected.
CAUSE CORRECTION
a. Eccentric or bulged tires. a. Replace tires as necessary.
b. Wheel or tire not concentric.
b. Replace wheel or tire.
c. Wheels, tires or brake drums out of balance. c. Balance wheels and tires. Also check for
out-of-balance brake drums.
d. Stabilizer shaft inoperative.
d. Inspect bushings and links and replace worn parts.
e. Shock absorbers inoperative.
e. Install new shock absorbers.
R O A D SHOCK OR STEERING KICK BACK OVER ROUGH R O A D S OR B U M P S
Follow steps below. If first step is O.K., proceed down list until problem
is corrected.
CAUSE
a. High air pressure in tires.
b. Wrong type or size tires used.
c. Front wheel bearing incorrectly adjusted or
worn.
d. Steering gear or connections incorrectly
adjusted.
e. Excessive caster.
f. Shock absorbers inoperative.
CORRECTION
a. Bleed tires to recommended pressure but not
when warm.
b. Install new tires of correct type and size.
c. Adjust or replace bearings as necessary.
d. Adjust steering gear and connections. Refer to
Section 9 for diagnosis of steering kick back in
steering system.
e. Check caster and adjust as necessary.
f. Install new shock absorbers.
H A R D STEERING
Follow steps below. If first step is O.K., proceed down list until problem
is corrected.
CAUSE CORRECTION
a. Low or uneven tire pressure. a. Inflate tires to recommended pressure, Section
10.
b. Insufficient or incorrect lubricant. b. Check lubricant in steering gear and lubricate
steering system as required.
c. Steering gear or connections adjusted too tight. c. Test steering system for bind with front wheels
off floor. Refer to Section 9 for diagnosis of HARD
STEERING in steering systems.
d. Front spring sagged.
d.'Check front end jounce height. Jounce height
should be approximately the same at both wheels.
Compare dimensions with those on car having about
same mileage and equipment and believed to be
standard. Replace front springs if sagged.
e. Excessive caster.
e. Check caster and adjust as necessary.