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3C-10
1977 PONTIAC SERVICE MANUAL
Fig. 3C-12 Installing Ball Joint to L.C.A.
by the hydraulic line.
5. Remove upper and lower ball stud cotter pins.
6. Remove ball studs from steering knuckle using Tool
5-23742. See "Ball Joint Removal".
Installation
CAUTION:
See
CAUTION on page I of this
section regatding the fasteners referred to in steps
2, 4,
5 and 6.
1. Place steering knuckle into position and insert upper
and lower ball studs into knuckle bosses.
2. Install ball stud nuts and torque to specifications.
Install cotter pin.
NOTE: Never back off nut to align the cotter pin.
Always tighten nut to next slot that lines up with hole
in the stud.
3. If drum brake vehicle: Place brake backing plate into
position and install bolts, nuts and anchor pin. Install the hub
assembly.
4. If disc brake vehicle: Install the splash shield and
install hub and disc.
5. Install outer bearing and spindle washer and nut and
adjust bearing.
6. Install brake caliper if disc brake vehicle and install
tire and wheel or install the brake shoe and brake drum if
drum brake vehicle and install tire and wheel.
7. Lower vehicle to floor.
UPPER CONTROL ARMS (U.C.A.)
U.C.A. Removal
1. Raise vehicle on hoist.
2. Support the lower control arm with a jack stand.
3. Remove tire and wheel assembly.
4. Separate the upper control arm ball stud from the
steering knuckle.
5. Remove the two nuts securing the upper control arm
shaft to the frame bracket.
NOTE: Tape the shims together and mark them for
position from which they were removed.
It is necessary in some cases to remove the upper control
arm attaching bolts to allow clearance to remove the upper
control arm assembly. The attaching bolts are splined into
the frame. To remove, proceed as follows:
a. Tap bolt down gently with brass drift as shown in Fig.
3C-13.
Fig. 3C-13 Loosening Upper Control Arm Bolts
b. Using a box wrench, gently pry bolt up.
c. Remove the nut and, using a suitable pry bar and block
of wood, pry bolts from the frame as shown in Fig. 3C-14.
6. Remove arm from the car.
1. Using 5-22269-5 and 5-24770-2 as shown in Fig. 3C-
15, tighten 5-22269-5 sufficiently to insert 5-24770-3 onto the
shaft.
2. Tighten screw against 5-24770-2 to remove bushing.
3. To remove bushing from other side, install 5-24770-2
and 5-22269-5 as shown in Fig. 3C-16 and turn the screw until
the bushing is pushed out.
4. Install either bushing with 5-22269-5 and 5-24770-1
as shown in Figs. 3C-17 and 18.
5. Install the support shaft and bushing on the other side
of the control arm with 5-22269-5 and Adapter 5-24770-1 as
shown in Fig. 3C-19.
U.C.A. Installation
CAUTION:
See
CAUTION on page I of this
section regarding the fasteners refer& to in steps
6,
7, 8 and 9.
1. Loosen end shaft retainer bolts and/or nuts.
2. If removed, position new upper control arm attaching
bolts loosely in the frame and install control arm cross shaft
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