Front Suspension - Chevrolet 1977 light duty truck Service Manual

The following caution applies to one or more steps in the assembly
procedure o f components in this portion o f the m anual as indicated at
a ppropriate locations by the terminology "See Caution on page 1 o f this
section".
CAUTION: T H IS F A S T E N E R
P A R T IN T H A T I T C O U LD A F F E C T T H E P E R F O R M A N C E OF
V IT A L C O M P O N E N T S A N D S Y S T E M S , A N D /O R C O U LD R E S U L T
IN M A JO R R E P A IR E X P E N S E . I T M U S T BE R E P L A C E D W IT H
O N E OF T H E S A M E P A R T N U M B E R OF W IT H A N E Q U IV A L E N T
P A R T IF R E P L A C E M E N T B E C O M E S N E C E S S A R Y . DO N O T U SE A
R E P L A C E M E N T P A R T OF L E S S E R Q U A L IT Y OR S U B S T IT U T E
D E SIG N .
D U R IN G R E A S S E M B L Y TO A S S U R E P R O P E R R E T E N T IO N OF
T H IS P A R T .
F ront Suspension (C-G-P Series)............................................... 3C-1
F ront Suspension (K-Series)......................................................... 3C-24
FRONT SUSPENSION, TWO-WHEEL DRIVE
G eneral D escription.......................................................... 3C-1
M aintenance and A d ju s tm e n ts .................................... .3C-3
D ia g n o s is .............................................................................. 3C-4
C om ponent Parts R eplacem ent..................................... 3C-15
Wheel Hubs, B earin g s................................................ .3C-15
Shock A b s o r b e r ............................................................. .3C-15
S tabilizer........................................................................... .3C-16
Coil S p r i n g .......................................................................3C-16
The C-G -P Series trucks incorporate an independent
coil spring front suspension system, as shown in Figures
3C-1 and 3C-2. The control arms are o f unequal length
(S.L.A. Type).
This suspension system consists of upper and lower
control arms pivoting on steel threaded or rubber
bushings on upper and lower control arm shafts. The
lower control arms are attached to the crossmember. The
upper control arms are attached to a fram e bracket.
SECTION 3C

FRONT SUSPENSION

I S A N
TO R Q U E V A L U E S M U S T B E U SE D A S S P E C IF IE D
C O N TE N T S OF T H IS SEC TIO N
INDEX
GENERAL DESCRIPTION
C-G-P Series
IM P O R T A N T A T T A C H IN G
U pper Control A rm S h a f t......................................... 3C-17
Lower Control A rm S h a f t ........................................ 3C-17
Upper Control A r m .................................................... 3C-18
Lower Control A r m ..................................................... 3C-19
Ball Jo in t.......................................................................... 3C-21
Steering K n u ck le........................................................... 3C-23
Suspension U n it............................................................. 3C-23
Specifications........................................................................ 3C-38
Special T o o ls ....................................................................... 3C-39
These control arms are connected to the steering knuckle
through pivoting ball joints.
A coil spring is located between the lower control
arm and a formed seat in the suspension crossmember,
thus the lower control arm is the load carrying member.
Double acting shock absorbers are also attached to the
lower control arms and connect with the fram e to the
rear on the upper end. The front wheel bearings are
tapered roller type and are used on all models.
I