Chevrolet 10 Series 1968, Service Manual

Page: 152 / 713

FRONT SUSPENSION 3-13
to safely retain spring in its curb height
position.
Rem oval
1. Raise vehicle and support lower control arm as noted
above.
2. Remove hub cap, wheel hub dust cover, cotter pin ad­
justing nut and washer, withdraw wheel and tire,
brake drum, and wheel hub and bearing assembly
from steering knuckle spindle.
3. Disengage brake shoe return springs and remove
brake shoe hold-down clips. Remove brake shoes
from backing plate.
C A U TIO N : Keep brake shoes clean and dry.
4. Remove brake anchor pin and two bolts securing
brake backing plate and steering arm to steering
knuckle.
5. Withdraw steering arm and brake backing plate from
steering knuckle. Wire backing plate to frame. Do
not disconnect brake line.
NOTE:
Refer to Section 9-Steering, for further
steering arm service operations.
6. Remove upper and lower ball stud cotter pins and
remove ball stud nuts. Free steering knuckle from
ball studs by rapping steering knuckle bosses. With­
draw steering knuckle.
Installation
1. Place steering knuckle in position and insert upper
and lower ball studs into knuckle bosses.
2. Install ball stud nuts and tighten as follows: Upper
nuts 70 lb. ft. CP10, 120 lb. ft. CP20-30; lower nuts
120 lb. ft. CP10, 215 lb. ft. CP20-30.
3. Place brake backing plate and wheel cylinder in posi­
tion on steering knuckle and insert anchor pin.
4. Place steering arm in position on back of steering
knuckle and insert two bolts through backing plate,
steering knuckle and steering arm. Install locknuts
and tighten 80 lb. ft. CP10, 105 lb. ft. CP20-30.
5. Torque brake anchor pin to 65 ft. lbs.
6. Install brake shoes, brake shoe hold-down clips and
return springs.
7. Install wheel hub, brake drum, wheel and tire assem­
bly over spindle.
8. Insert outer wheel bearing race and roller assembly,
washer and nut. Adjust front wheel bearing as shown
under Maintenance and Adjustments in this section.
Install new cotter pin, dust cap and hub cap.
9. Lower vehicle, recheck and readjust wheel alignment
where necessary.
Crossmember and Suspension Unit—Figure 27
Component parts of the front suspension may be serv­
iced separately as outlined in the preceding service
operations. However, if extensive service is to be per­
formed to crossmember, frame, etc., the unit can be
removed and installed as follows:
Rem oval
1. Remove front springs as outlined under Spring-
Removal.
2. Support engine and remove front engine mount center
bolt.
3. Separate main brake feeder line from crossmember
tee.
4. Remove bolts retaining crossmember hangers to
frame side rails.
5. Remove bolts securing crossmember to frame side
rail lower flange and lower the assembly from
vehicle.
Installation
1. Jack crossmember into position under frame and
install frame side rail lower flange mounting bolts.
2. Install bolts securing crossmember hanger to frame
and torque nuts 70 lb. ft. on 10 Series, 95 lb. ft. on
20-30 Series.
3. Position engine on front mount and install mounting
bolt and torque 45 lb. ft.
4. Install springs as outlined under Spring-Installation.
5. Connect front brake main feeder line and bleed
brakes as described in Section 5.
6. Check and Adjust front end alignment as outlined
under “ Maintenance and Adjustments” in this section.
I BEAM SUSPENSION UNIT
Stabilizer—Chevy Van (Figure 28)
Rem oval
1. Raise vehicle and remove radiator air deflector.
(See Section 11.)
2. Disconnect link bolt by removing upper nut. With­
draw upper grommet retainer and grommet and slide
link bolt, remaining grommets, spacer and retainers
out of bracket. Repeat for other link bolt.
3. Remove side rail brackets and stabilizer bar from
side rails.
Inspection
Inspect rubber grommets and side rail bushings for ex­
cessive wear or ageing and replace where necessary.
Use rubber lubricant, if necessary, to facilitate installa­
tion of bushing over bar.
Installation
1. Place stabilizer in position on side rail and install
side rail brackets. Leave bolts loose until final
tightening.
CHEVROLET TRUCK SERVICE MANUAL