Chevrolet LIGHT DUTY TRUCK (SERIES 10-35) Service Manual page 305

3C-18 FRONT SUSPENSION
J—24435-7
J—24435-3
J—24435-1
Fig. 3C-22--U.C.A. Rubber Bushing Removal
Bushing In s ta lla tio n
1. Again using "C" clam p J-24435-7 and installers J-
24435-4 (outer) and J-24435-5 (inner) tighten clam p to
install bushing onto control arm.
2. Install pivot shaft into inside diam eter o f first
installed bushing.
3. Install remaining bushing as shown in Figure 3C-23
and described in step 1.
4. Remove tools and install control arm on vehicle
following procedure described below. Torque all fasteners
to proper specifications.
Upper Control Arm Installation
CAUTION: See CAUTION on page 1 of
this section regarding
referred to in steps 1, 2 and 3.
W hen installing the upper control arm be sure to
position the special aligning washers to the pivot shaft with
concave and convex sides together.
1. Place control arm in position on bracket and install
Fig. 3 C - 2 3 - U . C . A . R u b b e r B us hin g In s ta lla tio n
LIG H T T R U C K S ER V IC E M ANUAL
the fasteners
J -2 4 4 3 5 -7
/
Fig. 3C -2 4 -L o w e rin g C ontrol Arm fo r Bushing Replacem ent
nuts. Before tightening nuts, insert caster and cam ber shims
in the same order as when removed. T orque the nuts to
specifications.
A norm al shim pack will leave at least two (2) threads
of the bolt exposed beyond the nut. If two (2) threads cannot
be obtained: Check for damaged control arm s and related
parts. Difference between front and rear shim packs must
not exceed .30 inches. F ront shim pack m ust be at least .24
inches.
Always tighten the thinner shim packs' nut first for
im proved shaft to frame clamping force and torque
retention.
2. Insert ball joint stud into steering knuckle and install
nut. Torque stud nut to specifications and install cotter pin.
3. Install brake caliper assembly if removed (see section
5).
4. Remove adjustable support from under lower
control arm. Install wheel and tire assembly.
5. Lower the vehicle to the floor.
LOWER CONTROL ARM ASSEMBLY
Removal
1. Raise vehicle on hoist and remove spring as outlined
under spring removal. Support the inboard end of the
control arm after spring removal.
2. Remove cotter pin from lower ball stud and loosen
stud nut one turn.
3. Install Ball Stud Remover J-23742, position large
cup end of the tool over the upper ball stud nut and piloting
the threaded end of tool on end of the lower ball stud.
Extend bolt from Tool J-23742 to loosen lower ball stud in
steering knuckle. W hen stud is loosened, remove tool and
nut from lower stud.
It is necessary to remove the brake caliper assembly
and wire it to the frame to gain clearance for tool J-23742.
See section 5 for proper procedure.
4. Remove the lower control arm.