Chevrolet 1977 light duty truck Service Manual page 298

Fig. 3C-28- Checking Lower Ball Joint
2. Remove the tire and wheel assembly.
3. Remove the lower stud cotter pin and loosen
(two turns) hut do not remove the stud nut.
4. Install J-23742 between the ball studs as shown
in Figure 3C-27.
N O TE : It is necessary to remove the brake caliper
assembly and wire it to the frame to gain clearance
for tool J-23742.
procedure.
CAUTION: Before proceeding with Step 5, be
sure lower control arm is supported as pointed
out in Step 1.
5. Extend bolt from Tool J-23742 to loosen ball
stud in steering knuckle. W hen stud is loosened, remove
tool and ball stud nut.
6. Pull the brake disc and knuckle assembly up off
W A TER PIPE
See section 5 for proper
C U T T O O L O N
D O T T E D LINE
J - 9 5 1 9 - 1 0
3 " W A T E R
2 5 /e " H IG H
Fig. 3C-30- A lteration to Tool J-9519-10
the ball stud and support the upper arm with a block of
wood so that assembly is out o f working area.
CAUTION: Do not put stress on the brake line
fle x hose.
7. Install Tools J-9519-10 an d J-9519-7 as shown in
Fig. 3C-29.
NOTE: It will be necessary to alter Tool J-9519-10
as illustrated in Fig. 3C-30 and install a 3" I.D.
pipe as shown if working on a 20 or 30 series
vehicle.
8. Turn hex head screw until ball jo in t is free of
control arm.
9. Remove tools and the ball joint.
Installation (Fig. 3C-31)
CAUTION: See C A U TIO N on page 1 o f this
section regarding the fasteners referred to in
steps 4, 5 and 7.
1. Start the new ball joint into the control arm and
install J-9519 and J-9519-9 as shown.
N OTE: Position bleed vent in rubber boot facing
inward.
2. Turn hex head screw until ball jo in t 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).
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.
N ever back off to align cotter pin.
6. Install a lube fitting and lube the joint.
FIT PIPE O N T O O L