Chevrolet Light Duty Truck 1973 Service Manual page 196

3 -2 2 FRONT SUSPENSION
2. Install remover J-24435-1, receiver J-24435-3 and
"C " clamps J-24435-7 as shown in Figure 32A.
3. Tighten the clamp to draw out the old bushing.
Discard old bushing.
4. The pivot shaft may now be removed from the
control arm assembly.
5. Reposition the control arm in the vise and repeat
the removal procedure on the remaining bushing.
Bushing Installation
1. Again using "C " clamp J-24435-7 and installers
J-24435-4 (outer) and J-24435-5 (inner) tighten
clamp to install bushing onto control arm.
2. Install pivot shaft into inside diameter of first
installed bushing.
3. Install remaining bushing as shown in figure 32B
and described in step
4. Remove tools and install control arm on vehicle
following procedure described below. Torque all
fasteners to proper specifications.
Upper Control Arm Installation
See CAUTION on page 1 of t h i s
CAUTION:
section regarding the fasteners referred t o i n
steps 1 , 2 and 3 .
NOTE: When 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
nuts. Before tightening nuts, insert caster and
camber shims in the same order as when removed.
Torque the nuts to specifications.
NOTE: A normal shim pack will leave at
least two ( ) threads of the bolt exposed
2
beyond the nut. If two (2) threads cannot be
obtained: Check for damaged control arms
and related parts. Difference between front
and rear shim packs must not exceed .30
inches. Front shim pack must be at least .24
inches.
NOTE: Always tighten the thinner shim
packs' nut first for improved 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.
.
1
LOWER CONTROL ARM ASSEMBLY
Removal
1. Raise vehicle on hoist and remove spring as
outlined under spring removal.
NOTE: 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. When
stud is loosened, remove tool and nut from lower
stud.
NOTE: 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.
Lower Control Arm Inner Pivot Shaft
and/or Bushing Replacement-On Vehicle
CIO, G10-20 (Rubber Bushings)
Removal (figs. 33A and 33B)
NOTE: If just bushings or pivot shaft are to
be replaced the lower control arm does not
have to be removed from the vehicle.
1. Raise vehicle on hoist and support the frame so
that the control arms hang free.
2. Position an adjustable floor jack under the lower con­
trol arm inboard of spring and into depression of
control arm.
Fig. 33A—Lowering Control Arm for Bushing
Replacement
LIGHT DUTY TRUCK SERVICE MANUAL