GMC 1982 Light Duty Truck Service Manual page 347

Probable Cause
a. Ball jo in ts an d steering linkage need lubric ation
b. Low or uneven fro nt tire pressure
c. Pow er steering partially or n o t operative
Steering gear n o t properly a djuste d
d.
e. Inco rrect f ro n t wheel alignm ent (m anual steering)
a. Ball jo in t s an d steering linkage need lubric ation
b. Low o r un even fr o n t or rear tire pressure
Loose wheel be arings
c.
d. Steering G ear n o t o n high p o in t
e. In correct f ro n t wheel align m ent (caster)
f. Broken springs
M alfunctioning sh oc k a b sorber.
g-
Broken stabilizer b a r, or missing link
h.
a. Tire and wheel o u t o f balance, o r o u t o f ro u n d
b. Worn or loose wheel bearings
Worn tie rod ends
c.
d. Worn ball j oints
e.
M alfunctioning sho c k a bsorber
Low or uneven tire pressure
a.
F r o n t or rear b ra k e dragging
b.
Bro ken or sagging f r o n t spring
c.
d. Inc orre c t f ro n t wheel a lig n m en t (C a m b e r)
Inc orre c t steering gear a d ju s tm e n t
a.
Worn steering gear parts
b.
(Looseness) and (c) Manually Operating Shocks to Deter-
mine if Shocks are Weak, Leaking Hydraulic Fluid, and/or
if Shocks have an Internal Noise Condition.
H A R D S T E E R IN G
a.
b.
c.
d.
e.
POOR D I R E C T I O N A L S T A B I L I T Y
a.
b.
c.
d.
e.
f.
g.
h.
F R O N T W H E E L S H I M M Y
(SM O O T H R O A D SH A K E )
a.
b.
c.
d.
e.
V E H I C L E P U L L S T O O N E S ID E
(N O B R A K IN G ACT IO N )
a.
b.
c.
d.
E X C E S S IV E P L A Y IN S T E E R IN G
a.
b.
Fig. 3C-4--Front Suspension Diagnosis Chart A
hoist that supports wheels or rear axle housing and front
lower control arms.
FRONT SUSPENSION
Probable Remedy
L ubricate ball j o in ts and linkage
Inflate tires to the pro p e r r e c o m m e n d e d pressure
Check p o w e r steering c o m p o n e n t s for p ro p e r o p e r a tio n
Adjust steering gear
Check and align f ro n t suspension
L ubricate at pro p e r intervals
Inflate tires to the pro p e r re co m m e n d e d pressure
Adjust wheel bearings
Adjust steering gear
Check and align fron t suspension
Replace springs
Diagnose sh ock absorbers.
Replace stabilizer or link
Balance tires, c heck run-out
Adjust wheel bearings
Replace tie rod end
Replace ball jo in ts
Diagnose sh ock a b sorbers
Inflate tires to the pro p e r re co m m e n d e d pressure
Adjust brakes
Replace spring
Check and align fro n t suspension
Adjust steering gear
Overhaul Gear
Test procedures (b) and (c) require vehicle to be on a
3C-5