Chevrolet 10 Series 1968, Service Manual

Page: 166 / 713

FOUR WHEEL DRIVE 3-27
Front Axle Assembly (Refer to Fig. 3)
Rem oval
1. D i s a s s e m b l e propeller s h a f t from front axle
differential.
2. Raise front end of truck until weight is removed
from front springs. Support truck with jack stands
behind front springs.
3. Disconnect connecting rod from steering arm.
4. Disconnect brake hoses from frame fittings.
5. Disconnect shock absorbers from axle brackets.
6. Dismount
bolts from axle to separate axle from
truck springs.
7. Roll front axle out from under the truck.
Installation
1. Truck should be on jack stands as in Step 2 of re­
moval instructions.
2. Place axle in position under truck.
3. Install
bolts attaching axle to front springs.
4. Attach shock absorbers to axle brackets.
5. Connect brake hoses to frame fittings.
6. Attach connecting rod to steering arm.
7. Remove jack stands and lower front of truck.
8. Assemble propeller shaft to front axle differential.
FRONT AXLE SHAFT ASSEMBLY
Rem oval
1. Support vehicle with front wheel free.
2. Place drain pan under wheel and remove hub grease
cap.
3. Remove snap ring from axle shaft.
4. Remove drive flange as follows:
a. On K10 models, pull splined drive flange from
shaft on hub and remove retainer and spring from
hub.
b. On K20 models, remove stud nuts and washers,
remove drive flange and gasket.
5. Remove bearing locknut and lock ring and remove
adjusting nut.
6. Remove wheel, hub and drum as an assembly.
7. Remove bolts and lock washers holding brake flange
plate and spindle to steering knuckle.
8. Remove flange plate from steering knuckle and sup­
port the plate so brake hose will not be damaged.
9. Slide spindle from shaft.
10. Remove axle shaft and joint assembly.
Repairs
1. Remove lock rings from trunnion bearings.
2. Support shaft yoke in a bench vise or on a short
length of pipe.
3. Using soft drift and hammer, drive on one end of
trunnion bearing just far enough to drive opposite
bearing from yoke.
4. Support the other side of yoke in bench vise and
drive other bearing out using brass drift on end of
trunnion.
5. On other joints, remove trunnions from yokes in
similar manner.
6. Remove trunnion.
7. Clean and inspect bearings, relubricate with a high
melting point wheel bearing type grease.
8. Replace trunnion and press new or relubricated
bearings into yokes and over trunnion hubs far
enough to install lock rings.
9. Hold trunnion in one hand and tap yoke lightly to seat
bearings against lock rings.
Installation
1. Slide axle shaft assembly into housing, engaging
splines in differential side gear.
2. Install spindle and bushing assembly on shaft.
3. Install brake flange plate on spindle, align mounting
holes and install bolts and lock washers. Tighten
bolts to 25-30 ft. lbs.
4. Install wheel and drum assembly on spindle.
5. Install outer bearing cone and adjusting nut.
6. Adjust bearings by tightening nut using
“ T ”
handle
wrench (12" long on each side). Rotate drum and
F ig . 8 —Transfer Case Assembly (T yp ica l)
CHEVROLET TRUCK SERVICE MANUAL