TRUCK SERVICE MANUAL
WHEELS, RIMS, AND TIRES
factory performance from oil seals, the following
information has been prepared to guide and assist in
proper installation.
Due to the various types of front and rear axle hub
seal installations, check axle ring and hub seal position at
time of disassembly to assure proper reassembly of new
seal and axle ring (wiper).
OIL SEALS WITH AXLE RING (WIPER)
Axle Ring (Wiper) Installation
1. Thoroughly clean all parts: axle tube or spindle,
bearings, nuts and inside of wheel hub.
2. Remove burrs from axle tube or spindle
shoulder. Shoulder must be smooth.
3. Apply a thin coat of Permatex No. 2 to inside
perimeter of axle ring.
Fig. 4. Medium Duty
4. Place axle ring on axle tube or spindle using an
installing tool (Fig. 5).
REAR WHEEL BEARINGS
NOTE : A suitable installing tool can be
Full Floating axle wheel bearings (Fig. 3 and Fig. 4)
made locally by obtaining a piece of
are adjusted by an adjusting (inner) nut on end of axle.
standard 8.9 cm (3-1/2") inside diameter
Install adjusting nut and rotate wheel while tightening to
tubing approximately 25.4 cm (10") long.
be sure bearings are properly seated.
Weld a used close fitting bearing cone or large washer to
NOTE : 68.0 N.m (50 ft lbs) torque on
one end and similarly close opposite end with a plate.
adjusting nut is considered sufficient to
This will enable tool to pilot squarely onto axle tube and
seat bearings.
permit driving force to be centered over the complete
ring. The same type of tool can be used for both front
Back off adjusting nut 1/4 turn and install lockwasher
and rear axles.
and jam nut. Tighten jam nut to 203 N.m (150 ft lbs)
torque and bend over lockwasher tang to secure nut.
The care with which the axle ring is installed cannot be
Assemblies which use doweled adjusting nut and pierced
over-emphasized. Damage to this ring will result in
wheel bearing nut lock require 271 407 N.m (200 300 ft
shortened seal life.
lbs) torque on outer lock nut.
5. Tap on end of axle tool driving axle ring firmly on
OIL SEALS (OIL LUBRICATED WHEEL BEARINGS)
shoulder until axle tool contacts shoulder.
Remove excess Permatex.
Various precautions are necessary when oil seals
are installed in wheels and also when wheels with oil
6. Check position of axle ring to make sure edge of
seals are installed on axles. To insure
ring is parallel with shoulder.
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