Chevrolet LIGHT DUTY TRUCK (SERIES 10-35) Service Manual page 291

3C-4 FRONT SUSPENSION
Probable Cause
a. Ball joints and steering linkage need lubrication
b. Low or uneven front tire pressure
c.
Power steering partially or not operative
d.
Steering gear not properly adjusted
e.
Incorrect front wheel alignment (m anual steering)
a.
Ball jo in ts and steering linkage need lubrication
b.
Low or uneven front or rear tire pressure
c. Loose wheel bearings
d.
Steering Gear not on high point
e.
Incorrect front wheel alignm ent (caster)
f.
Broken springs
M alfunctioning shock absorber.
g -
h.
Broken stabilizer bar, or missing link
a.
Tire and wheel out o f balance, or out o f round
b. Worn or loose wheel bearings
c. Worn tie rod ends
d. Worn ball joints
e.
M alfunctioning shock absorber
a. Low or uneven tire pressure
b. Front or rear brake dragging
c. Broken or sagging front spring
d. Incorrect front wheel alignment (Camber)
a. Incorrect steering gear adjustment
Worn steering gear parts
b.
LIG H T T R U C K S ER V ICE M ANUAL
DIAGNOSIS
HARD STEERING
a.
b.
c.
d.
e.
POOR DIRECTIONAL STABILITY
a.
b.
c.
d.
e.
f.
g-
h .
FRONT WHEEL SHIMMY
(SM O O T H R O A D S H A K E )
a.
b.
c.
d.
e.
VEHICLE PULLS TO ONE SIDE
(N O B R A K IN G A C T IO N )
a.
b.
c.
d.
EXCESSIVE PLAY IN STEERING
a.
b.
Fig. 3 C -4 --F r o n t S u s p e n s io n D ia g n o s is C h a r t A
Probable Remedy
Lubricate ball joints and linkage
Inflate tires to the proper recommended pressure
Check power steering components for proper operation
Adjust steering gear
Check and align front suspension
Lubricate at proper intervals
Inflate tires to the proper recommended pressure
Adjust wheel bearings
Adjust steering gear
Check and align front suspension
Replace springs
Diagnose shock absorbers.
Replace stabilizer or link
Balance tires, check run-out
Adjust wheel bearings
Replace tie rod end
Replace ball joints
Diagnose shock absorbers
Inflate tires to the proper recommended pressure
Adjust brakes
Replace sp'ring
Check and align front suspension
Adjust steering gear
Overhaul Gear