Chevrolet 1980 Light Duty Truck Service Manual page 341

Fig. 4B-27--Drive Pinion Flange Removal
installed position; seal must be square in carrier bore to seal
properly against pinion flange.
4. Pack the cavity between end of pinion splines and
pinion flange with a non-hardening sealer (such as Permatex
Type A or equivalent) prior to installing washer and nut on
pinion.
5. Using J-8614-11 as shown in figure 4B-29, install
flange onto pinion. Install washer and nut, and tighten nut
to original position. Refer to scribe marks and number of
exposed threads, recorded earlier.
Do not attempt to hammer the flange onto
NOTICE:
pinion shaft. To do so may damage the ring gear and
pinion.
6. Measure rotating torque of pinion and compare
with torque recorded before removal. Tighten pinion nut in
additional small increments until the torque necessary to
rotate the pinion exceeds the original figure by 1 to 5 inch
pounds. Do not exceed the original torque by more than
5 inch pounds.
Fig. 4B-28--Pinion Oil Seal Installation
Fig. 4 B -2 9--ln stalling Pinion Flange
7. Reattach propeller
specifications. Reinstall brake drums and wheels.
See NOTICE on page 1 of this section
NOTICE:
regarding the fasteners referred to in step 7.
8. Lower vehicle and remove from hoist.
CHEVROLET 10-1/2" RING GEAR
AXLES
AXLE ASSEM BLY
Service operations on these axle assemblies may be
performed with the housing installed in the vehicle or with
the housing installed in a holding fixture. There may be
occasions, however, when it will be necessary to remove the
complete housing assembly. The following axle assembly
removal and installation procedure, therefore, is necessary
only when housing replacement is required.
All axle attachments are important
NOTICE:
attaching parts. See NOTICE on page 1 of this section.
Removal
1. Raise vehicle, place stand jacks under frame side
rails, and remove rear wheels.
2. Remove two trunnion bearing "U" bolts from the
rear yoke, split rear universal joint, position propeller shaft
to one side, and tie it to the frame side rail.
The bearings can be left on the trunnion and held in
place with tape.
3. Remove hub and drum assembly and disconnect
parking brake cable at lever and at flange plate. See Section
5 for cable removal.
4. Disconnect hydraulic brake hose at connector on
rear axle housing. Refer to Section 5.
5. Disconnect shock absorbers at axle brackets.
6. Support axle assembly with hydraulic jack, remove
spring "U" bolts, and lower axle assembly to the floor.
REAR AXLE 4B-17
shaft and torque to
LIG H T T R U C K SER V IC E M AN U AL