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3C-12
1977 PONTIAC SERVICE MANUAL
9. With vehicle on the floor, torque the shaft retainer
bolts and/or nuts to specifications.
LOWER CONTROL A R M S (L.C.A.)
L.C.A. Removal
1. Remove the coil spring as outlined earlier.
2. Remove the ball from the steering knuckle as outlined.
3. Remove the control arm from the car.
Rear Bushing Replacement
1. Raise vehicle on a hoist.
2. With the vehicle supported by the frame (with floor
stands) so that the control arms hang free, remove the lower
shock absorber bolts and push the shock absorber up through
the coil spring.
3. Position Tool 5-23028 to a suitable jack and place
under lower control arm bushings so that bushings seat in the
grooves of the tool.
4. Install a chain around the control arm and through
a coil of the spring as a safety measure.
5. Remove the control arm pivot bolts and nuts. Remove
rear bolt first.
NOTE: If bolts "hang up" between control arm and
frame, use a pry bar to move the control arm so that bolts
can be removed. Do not "hammer" bolts out.
6.
Lower the control arm by slowly releasing the jack
7. Install Spacer 5-21414-12 as shown in Fig. 3C-20.
J-21'474-3
HIDDEN
Fig.
3C-20
Removing
L.C.A.
Bushing
CAUTION: Do not attempt to remove bushing
without having the spacer in position. Distortion
to the a m could result.
8. Install remaining tools as shown in Fig. 8, and turn
hex bolt and nut until the old bushing is removed.
9. Remove tools and discard bushing.
10. Start a new bushing in place and position tools, as
shown in Fig. 3C-21.
NOTE: Spacer 5-21474-12 should still be in position.
11. Turn hex bolt and nut until new bushing is properly
seated.
Fig.
3C-2 1
Installing
L.C.A.
Bushing
12. Remove tools.
13. Position Tool 5-23028 under bushings and install
control arm to vehicle frame.
CAUTION: See CAUTION on page 1 of this
section regarding the fasteners referred to in Step
14.
14. Install pivot bolts (front bolt first) and nuts, and
torque nuts to specifications. Remove safety chain.
NOTE: The front pivot bolt must be installed with the
head forward and the nut rearward.
15. Pull shock absorber lower end through the lower
control arm and install mounting bolts. Torque bolts to
specifications.
16. Remove tool 5-23028 and position hoist under
control arms to accept weight of vehicle.
17. Remove floor stands and lower vehicle to floor.
Front Bushing Replacement
CAUTION: See CAUTION on page 1 of this
section regarding the fasteners referred to in Step
7.
1. With control arm off vehicle, remove flare by tapping
on edge with a hammer.
2. Install tools as shown in Fig.
.
B; sure spacer is in
place.
3. Turn down on hex nut until old bushing is removed.
4. Start new bushing and install tools as shown in Fig.
to press new bushing into position.
5. Remove Tool 5-21474-5 and install flaring Tool J-
23915.
6. Turn on hex nut until new bushing is flared. See Figs.
3C-22 and 23. Remove tools and inspect flare for good
contact with control arm.
7. Install arm to vehicle following procedure outlined
earlier in this section. Torque all fasteners to specifications.
L.C.A. Installation
CAUTION: See CAUTION on page I of this
section regarding the fasteners referred to in steps
1, 2 and 3.
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