Page N-4
REAR AXLE
Repair and Service Manual
Read all of Section B and this section before attempting any procedure. Pay particular attention to all Notices, Cautions, Dangers and Warnings.
After drilling, position a chisel across the hole and strike
sharply to break the ring. Replace with a new ring at
time of assembly.
Support the axle shaft assembly in a suitable press.
Press on the end of the axle shaft until the wheel bear-
ing assembly and brake assembly are removed.
It is important to note the order of components for axle
shaft assembly, especially note the correct orientation
for the wheel bearing assembly (Ref Fig. 7) .
AXLE COMPONENTS INSPECTION
Roller Bearing
It is recommended, that whenever the bearings are
removed, they are replaced with new ones regardless of
mileage.
Oil Seals
Inspect oil seals for signs of leaking. Look for cuts or
cracks. Be sure the spring on the inside of the seal lip is
in place.
Axle Shaft Seal Surface
Inspect sealing surface of axle shaft. Replace if seal has
grooved the surface more than 1/64" (.4 mm).
AXLE SHAFT ASSEMBLY
Bearing Installation
Inspect shaft for possible damage, replace if damage is
evident. In the following order, place new wiper seal,
brake assembly, bearing retainer and new grease
packed bearing assembly (with unit bearing rib ring
toward flanged end of shaft) on the axle shaft.
Support the bearing assembly in a suitable press. Press
axle shaft assembly until bearing is firmly seated against
axle shaft shoulder.
Slide new retainer ring on the axle shaft and support the
shaft in suitable press.
Press the retainer ring firmly against bearing.
Axle Shaft Installation
Tools List
Qty.
Seal driver....................................................................1
Machinist Rule, 6" ........................................................1
Socket, 1/2", 1/2" drive ................................................1
Torque wrench, ft. lbs., 1/2" drive.................................1
Feeler gauge................................................................1
Install new oil seal into axle housing and set to original
depth of 1 7/32" ± .010" (31 mm ± .25 mm) from the
outer flange of the axle tube.
After seal has been installed, grease lip of seal.
Assemble bolts and new gasket on axle housing. Then
install axle shaft assembly into axle housing. Care
should be taken not to damage gasket, oil seal, or bear-
ing. Line up holes of brake assembly and wiper seal.
Push axle shaft as far as possible into axle housing.
Start backing plate nuts on bolts by hand. Tighten nuts in
a diagonal pattern to assure the retainer ring and wheel
bearing assembly are drawn evenly into axle housing.
Tighten backing plate nuts to 37 - 45 ft. lbs (50 - 61 Nm)
torque.
Install brake drum and connect the hydraulic brake line
to the wheel cylinder. Tighten brake line nut to 150 - 160
in. lbs. (17 - 18 Nm) torque. Bleed the hydraulic brake
system per BRAKES section.
Fig. 8 Components Orientation
Backing Plate
Brake Drum
Brake Shoe
Bearing
Bearing Retainer
Brake Assembly
Backing
Plate
Nuts
Axle
Shaft
Axle Housing
Wiper Seal
Retainer Ring
Oil Seal
Gasket
