TM-5-3805-254-14-P-2
TRUCK, DUMP, 20 TON, 6X4, ON-OFF HIGHWAY 71,000 GVW, IHC MODEL F-5070 (CCE)
TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, GENERAL SUPPORT AND DEPT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS INFORMATION AND SUPPLEMENTAL MAINTENANCE INSTRUCTIONS)
JUNE 1980
TM-5-3805-254-14-P-2 - Page 855 of 894
TRUCK SERVICE MANUAL
WHEELS, RIMS, AND TIRES
Fig. 4.
Medium Duty
REAR WHEEL BEARINGS
Full Floating axle wheel bearings (Fig. 3 and Fig. 4)
are adjusted by an adjusting (inner) nut on end of axle.
Install adjusting nut and rotate wheel while tightening to
be sure bearings are properly seated.
NOTE : 68.0 N.m (50 ft lbs) torque on
adjusting nut is considered sufficient to
seat bearings.
Back off adjusting nut 1/4 turn and install lockwasher
and jam nut. Tighten jam nut to 203 N.m (150 ft lbs)
torque and bend over lockwasher tang to secure nut.
Assemblies which use doweled adjusting nut and pierced
wheel bearing nut lock require 271 407 N.m (200 300 ft
lbs) torque on outer lock nut.
OIL SEALS (OIL LUBRICATED WHEEL BEARINGS)
Various precautions are necessary when oil seals
are installed in wheels and also when wheels with oil
seals are installed on axles. To insure
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.
4. Place axle ring on axle tube or spindle using an
installing tool (Fig. 5).
NOTE : A suitable installing tool can be
made locally by obtaining a piece of
standard 8.9 cm (3-1/2") inside diameter
tubing approximately 25.4 cm (10") long.
Weld a used close fitting bearing cone or large washer to
one end and similarly close opposite end with a plate.
This will enable tool to pilot squarely onto axle tube and
permit driving force to be centered over the complete
ring. The same type of tool can be used for both front
and rear axles.
The care with which the axle ring is installed cannot be
over-emphasized.
Damage to this ring will result in
shortened seal life.
5. Tap on end of axle tool driving axle ring firmly on
shoulder until axle tool contacts shoulder.
Remove excess Permatex.
6. Check position of axle ring to make sure edge of
ring is parallel with shoulder.
846
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