Advertisement
3A-6 FRONT SUSPENSION
PROBLEM
POSSIBLE CAUSE
EXCESSIVE OR
UNEVEN TIRE WEAR
SCUFFED TIRES
CUPPED TIRES
WEAR IN THE SECOND
TREAD ROW ON EACH
SIDE OF TIRE
EXCESSIVE
LOOSENESS IN TIE ROD
OR INTERMEDIATE
ROD PIVOTS, OR
EXCESSIVE VERTICAL
LASH IN IDLER PIVOT
OR RELAY ARM PIVOT .
SHOCK ABSORBER-
WEAK .
2 .
3 .
4 .
5 .
',6 .
17 .
Underinflated or over-
inflated tires .
Improper toe-in .
Wheels out of balance .
Hard driving.
Overloaded vehicle .
Improper camber.
Unparallel intermediate
rod.
1 . Toe-in incorrect .
2 . Excessive speed on turns.
3 . Tires improperly inflated .
4 . Rear suspension arm bent or
twisted.
Intermediate rod not
parallel .
6 . Incorrect ride height .
5 .
1 .
2 .
3 .
4 .
5 .
Shock absorbers defective .
Worn upper suspension ball
joint.
Worn lower suspension ball
joint .
Wheel and tire out of
balance.
Excessive tire or wheel
runout.
1 . Underinflation or inherent
problem of bias belted tires .
Seal damage and leakage
resulting in loss of lubricant,
corrosion and excessive
wear or improper torque .
1 .
2 .
3 .
Low or uneven tire pressure .
Excessive or incorrect
vehicle loading .
Worn out shock absorber .
Front.
CORRECTION
1 . Inflate tire to recommended
pressure .
2 . Realign front end .
3 . Balance wheels.
4 . Instruct driver
5 . Instruct driver .
6 . Realign front end .
7 . Correct as necessary .
1 . Adjust toe-in to specifications .
2 . Advise driver.
3 . Inflate tires to recommended
pressure .
4 . Replace arm .
5 . Correct to specifications.
6 .
Adjust ride height .
1 . Replace shock absorbers .
2 . Replace upper ball joint .
3 . Replace entire lower control
arm assembly .
4 . Balance wheel and tire.
5 . Compensate for runout.
1 . Inflate tire to recommended
pressure and rotate tires.
1 . Replace damaged parts as
necessary and check torque .
l . Inflate tires to recommended
pressure.
2 . Instruct driver .
3 . Perform on-vehicle test . Push
down and lift up at end of bumper
nearest front shock in question .
Right and left shocks must be
comparable in rebound resistance
to compression ratio (usually
2 to 1) . If in doubt compare with
vehicle having acceptable ride
quality.
Advertisement
