GMC 1982 Light Duty Truck Service Manual page 365

Installation
1. Raise hoist to align new suspension unit with frame rail
holes.
NOTICE: See N O T I C E , on page 1 of this section
regarding fasteners referred to in steps 2-14.
2. Assemble (finger-tight) upper control arm bracket
bolts and crossmember bolts to frame rails.
3. Torque upper control arm bracket bolts to frame side
rails to 90 N-m (65 ft. lbs.). Control arm bracket bolts
must be torqued before crossmember bolts are torqued.
Crossmember must be in contact with siderails.
4. Torque crossmember bolts to frame lower rails 100 ft.
lbs. Engine support can be removed at this time.
5. Lower hoist.
6. Assemble (finger-tight) engine mount support bracket
to front suspension crossmember bolts.
7. Torque engine mount support bracket bolts to 48 N-m
(35 ft. lbs.).
F R O N T S U S P E N S IO N , F O U R -W H E E L D R IV E
General Description............................................................ 3C-23
Maintenance and A d ju stm en ts ....................................... 3C-26
Ball Joint A d ju s tm e n t................................................... 3C-26
Bearing L u b ric a tio n ...................................................... 3C-26
Wheel Bearing A djustm en t..........................................3C-26
Component R e p lac e m e n t..................................................3C-27
Hubs, Automatic Locking............................................3C-27
H u b -a n d -D isc ..................................................................3C-30
Knuckle Attachment
At the wheel ends of the axle tubes, two types of
steering knuckle attachment are used. Figure 3C-1K shows
the K10 and K20 knuckle attached with ball joints. Figure
3C-2K shows the king-pin attachm ent used in K30. The
tapered upper king pin fits in a tapered nylon bushing. The
8. Install brake line clip bolt to front suspension cross­
9. Connect front shock absorbers to L.C.A.'s. Torque to
10. If equipped, connect front stabilizer to L.C.A.'s.
11. Connect tie rod ends to steering knuckles. Refer to
12. Connect front brake hose to caliper, using new special
13. Connect front brake hose clips to upper control arms.
14. Lubricate upper and lower ball joints.
15. Install front wheels.
16. Bleed brake system. Refer to Section 5 for correct
17. Lower vehicle.
18. Connect battery cable.
SERIES K IO , K 2 0 , K 3 0
INDEX
Steering Knuckle (K10, K 2 0 ).....................................3C-31
Steering Knuckle ( K 3 0 ) ............................................. 3C-34
Shock A b s o rb e r............................................................ 3C-36
Stabilizer B ar................................................................. 3C-36
Specifications..................................................................... 3C-39
Special Tools...................................................................... 3C-40
GENERAL DESCRIPTION
lower king pin is part of the bearing cap, and this king pin
rides in a tapered roller bearing.
Hub Design
system, automatically engages the hub whenever four-wheel
drive is selected.
member. Torque to 17 N-m (150 in. lbs.) (C-models),
12 N-m (100 in. lbs.) (G-models).
80 N-m (60 ft. lbs.) (C-models), 95 N-m (70 ft. lbs.)
(G-models).
Torque to 34 N-m (25 ft. lbs.).
Section 3B.
washers. Refer to Section 5.
Torque nuts to 17 N-m (150 in. lbs.).
bleeding procedures.
S p in d le .............................................................................. 3C-30
Leaf S p rin g .................................................................... 3C-37
An automatic locking hub is used on all models. This
FRONT SUSPENSION 3 C -2 3