Chevrolet 30 Series 1967 Service Manual page 140

FRONT SUSPENSION 3-12
F ig . 24 - Removing Lower Ball Jo in t
25 -
Fig . Installing Lower Ball Jo in t
cially designed rivet in the forward position has a
head on the bottom side which serves as a guide pin
to locate the pivot shaft in proper position. Install
U bolts and torque 40 lb. ft. on CP10 Series, 110
lb. ft. on C20-30 Series.
2. Install spring and steering knuckle as outlined under
Sp ring- Installation.
Upper Control Arm Assembly
Removal
1. Raise vehicle, remove wheel and tire assembly and
support lower control arm assembly with adjustable
jackstand.
2. Disconnect upper ball joint stud and raise upper arm
to clear steering knuckle.
NOTE:
At this point or after Step 1, compres­
sor J-6874 may be installed to safely retain
spring.
3. Remove nuts securing control arm shaft studs to
crossmember bracket.
assembly.
Withdraw control arm
NOTE:
Tape shims and spherical spacers to­
gether and tag for proper relocation when con­
trol arm is reinstalled.
Repairs
Bushings
1. Remove grease fittings from ends of bushings and
unscrew bushings from shaft and control arm. Re­
move shaft and seals.
2. Slide new seal on each end of shaft and insert shaft
into control arm.
3. Start new bushings on shaft and into control arm.
Adjust shaft until it is centered in control arm, then
turn bushings in and torque 160 lb. ft. for CP10,
190 lb. ft. for C20-30 if spacer is used, 95 lb. ft. for
CP10, 135 lb. ft. for C20-30 if no spacer is used.
Check shaft for free rotation.
rect final positioning of shaft.
B all Joint
1. Center punch rivet heads and drill out rivets.
may also be chiseled or ground off.
2. Remove ball joint assembly and inspect arm for
cracks or distortion at the ball joint seat.
3. Install service ball joint assembly in arm using spe­
cial hardened bolts only, torquing bolts 45 lb. ft.
Installation
1. Place control arm in position on bracket and install
nuts. Before tightening nuts, insert caster and cam­
ber shims in the same order as when removed.
Tighten nuts 80 lb. ft. for CP10 models, 155 lb. ft.
for C20-30 models.
2. Insert ball joint stud into steering knuckle and install
nut. Tighten stud nut 70 lb. ft. on CP10 models,
120 lb. ft. on C20-30 models.
3. Remove spring compressor J-6874 if used, and re­
move adjustable support from under control arm.
Install wheel and tire assembly.
F ig . 26 - Positioning Upper Control Arm Shaft
Figure 26 shows cor­
Rivets
CHEVROLET TRUCK SERVICE M ANUAL