Chevrolet LIGHT DUTY TRUCK (SERIES 10-35) Service Manual page 308

Fig. 3 C -29 -C he cking Low er Ball J o in t
2. Accurately measure distance between tip of ball stud
and tip of grease fitting below ball joint.
3. Move support to control arm to allow wheel hub and
drum to hang free. Measure distance as in Step 2. If the
difference in measurements exceeds .094" (3/32") for all
models, ball joint is worn and should be replaced (Fig. 3C-
29). v
Lower-Removal
1. Raise vehicle on a hoist. If a frame hoist is used it
will be necessary to support the lower control arm with a
floor stand.
2. Remove the tire and wheel assembly.
3. Remove the lower stud cotter pin and loosen (two
turns) but do not remove the stud nut.
4. Install J-23742 between the bail studs as shown in
Figure 3C-27.
It may be 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.
5. Be sure lower control arm is supported as pointed
out in Step 1. Extend bolt from Tool J-23742 to loosen ball
stud in steering knuckle. When stud is loosened, remove tool
and ball stud nut.
6 . Pull the brake disc and knuckle assembly up off the
ball stud and support the upper arm with a block of wood
so that assembly is out of working area.
Do not put stress on the brake line flex hose
NOTICE:
or damage to the brake line may result.
i O ''
7. Install Tools J-9519-10 and J-9519-2 and J-9519-29
as shown in Fig. 3C-30.
. Turn hex head screw until ball joint is free of control
8
arm.
9. Remove tools and the ball joint.
.3 v 0 0 1 3 # K
' . ' t - i U h i r j
FRONT SUSPENSION
Installation (Fig. 3C-31)
CAUTION: See CAUTION on page 1 of
this section regarding
referred to in steps 4, 5 and 7.
1 . Start the new ball joint into the control arm and
install J-9519-10 and J-10519-16 as shown. Position bleed
vent in rubber boot facing inward.
2. Turn hex head screw until ball joint is seated in
control arm.
3. Lower the upper arm and mate the steering knuckle
to the lower ball stud.
4. Install brake caliper assembly if removed (see Section
5 ),a
5. Install ball stud nut and torque as follows. All Series,
80-100 ft. lbs. plus additional torque to align cotter pin hole
not to exceed 130 ft. lbs. maximum. Never back off to align
cotter pin.
. Install a lube fitting and lube the joint.
6
7. Install tire and wheel assembly and lower vehicle to
floor.
3C-21
the fasteners
LIGH T T R U CK SER V IC E MANUAL