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TM 10-3930-633-12
Section XIV. MAINTENANCE OF WHEELS AND WHEEL BEARINGS
4-74. Wheels
proceed to remove the wheels by removing ONLY
the inner set of nuts as shown in figure 4-42. Do
a. General. Wheels are of the steel disc type,
not disturb the nuts on the larger bolt circle
the rear wheels being the two-piece lockring type,
(nearer the rim).
while the front wheels are the split two-piece
wheel to permit mounting of the smaller tire.
Never remove front wheels and tires
b. Removal.
without first completely deflating the
(1) When removing rear tire and wheel
tire. Remove the valve core to make
assemblies, it is only necessary to raise the rear
wheels off the ground by means of a jack or hoist,
certain that all pressure is exhausted.
and remove the wheel mounting nuts.
Deflating prior to removal is recom-
(2) When removing front wheels, make
mended for rear tires also.
certain that all air pressure is relieved, then
Figure 4-42. Wheel Removal
(3) When mounting tire and wheel assemblies
b. Lubrication. Every 1000 hours, remove
wheels, grease caps, rear axle shafts and brake
to the vehicle, torque rear wheel mounting nuts to
125-140 ft/lbs, and torque front wheel mounting
drums to expose wheel bearings refer to figure 4-
43. Thoroughly clean out bearings and recesses in
nuts to 60-75 ft/lbs.
brake drums to remove all traces of old grease.
4-75. Wheel Bearings
Bearing cones may be rinsed in Solvent, Federal
a. General. Tapered roller wheel bearings are
Specification P-D-680, and allowed to air dry. Do
used on both front and rear wheels. Bearing
not spin bearings dry with compressed air.
preload adjustment is maintained at the rear axle
Repack bearing cones and hub recesses with the
by means of two locknuts and a tabbed lock-
proper grease as specified in the Lubrication
washer; and on the front wheels by means of a
Order LO 10-3930-633-12.
single castellated nut and cotter pin.

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