Cadillac 60 Series 1963 Shop Manual page 158

PROPELLER SHAFT AND REAR AXLE
7-9
6. Install new wheel bearing and seal assembly
on shaft so that O-ring groove is toward splined
end of axle shaft.
7. Insert axle shaft through ring of bearing In-
staller, J-6257, and " U " shaped piece of Bearing
Plate and Pin Assembly, J-2986-1, and place on
arbor press, Fig. 7-13.
8. Press bearing on shaft so that there is
3-7/32 inch clearance between outer surface of
axle shaft flange and inner end of wheel bearing
inner race, Fig. 7-13.
9. Release arbor press and remove axle shaft
from installer tools.
10. Install new bearing retainer on axle shaft
and reinstall shaft on installer tools.
11. Press shaft through retainer until retainer
just contacts bearing. Remove shaft from in-
staller tools.
d. Installation of Axle Shaft and Bearing Assembly
1. Apply film of differential lubricant to wheel
bearing bore in axle housing after checking for
burrs and nicks.
2. Use a new gasket on cover and a new O-ring
seal on wheel bearing and install axle shaft being
careful not to damage O-ring seal.
NOTE: Whenever axle shaft is removed,
always install a new O-ring seal on wheel
bearing.
3. Install four nuts and lock washers on rear
axle housing bolts, to hold cover, gasket, and
brake backing plate in place, and tighten by in-
serting a socket wrench through large hole in
rear axle flange. Torque nuts to 40 foot-pounds.
4. Install brake drum and two retaining screws.
5. Install wheel and lower car. Tighten wheel
mounting nuts to 105 foot-pounds.
7. Axle Shaft Removal and Installation
(Commercial Chassis)
a. Removal
1. Raise rear end of car and remove wheel.
2. Remove retaining nut and lock washer from
end of axle shaft and discard washer.
NOTE: Engage parking brake to prevent
brake drum from turning while loosening r e -
taining nut.
3. Release parking brake and pull wheel hub
and brake drum assembly off shaft. Use a five-
jaw puller, to reduce the possibility of warping or
distorting the brake drum.
4. Remove seven screws and lock washers that
hold bearing retainer and backing plate to axle
housing flange.
5. Remove key from end of axle shaft and r e -
move bearing retainer.
6. Pull axle shaft and bearing assembly from
housing as a complete assembly. Be careful not to
damage axle shaft oil seal.
b. Installation
NOTE: Before installing axle shaft after an
oil seal has been replaced, inspect rear wheel
bearing for loss of lubricant, since a leak in an
old seal may permit differential lubricant to
"wash out" grease in a sealed wheel bearing.
A wheel bearing that spins freely indicates a
lack of grease, and should be replaced at same
time new oil seal is installed.
1. Install axle shaft and bearing assembly into
housing as a complete assembly. Be careful not
to damage axle shaft oil seal.
2. Install bearing retainer and key on end of
shaft.
3. Install seven bolts and lock washers that hold
bearing retainer and backing plate to axle housing
flange. Tighten bolts to 70 foot-pounds.
4. Install wheel hub and brake drum assembly
on shaft.
5. Install new lock washer and retaining nut on
end of axle shaft.
6. Engage parking brake and tighten retaining
nut to 300 foot-pounds, then bend washer along one
flat of nut.
7. Install wheel and lower rear end of car.
8. Rear Axle Oil Seal Replacement
(Commercial Chassis)
Whenever an axle shaft oil seal is removed on
commercial cars, a new oil seal must be in-
stalled.
Guard against any bending or denting of seals,
as this might cause leakage after installation.
Even a slight scratch across sealing lip might
provide a channel for oil to seep through. Seals
should be soaked in clean motor oil for 1/2 hour
before being installed.
After removing wheel and axle shaft, seal
may be removed from rear axle housing. A tool