
II. LUBRICATION
Recommended Lubricants
LUBRICANT
Gear Oil
Chassis Grease
Wheel Bearing Grease
Wheel Bearing Oil
ABOVE 32° BELOW 32°
MIL-L-2105 B MIL-L-2105 B
SAE 140
SAE 90
MIL-L-2105 C MIL-L-2105 C
80W-140 80W-90
MIL-G-10294 MIL-G-10294
NLGI Grade #2 NLGI Grade #2
Use same as recommended for differential
A. Wheel Bearings
Wheel bearings require cleaning, inspection, packing
with grease or an oil change at each brake re-line. Wheel
bearings should be lubricated in accordance with the
vehicle manufacturers recommendations. They may
either be grease packed or oil lubricated. A ¼” pipe
plug (See fig. 2) is located under the hubcap in the outer
axle shaft flange. Oil filled wheel hubs should be filled
to the level of this plug when it is in a position on the
axle horizontal centerline. When using grease to pack
the bearings, grease both inner and outer wheel
bearings. In addition to greasing both inner and outer
wheel bearings, be sure to grease the carrier bearing
for the outer drive yoke. By removing the cross and
bearing U joint and outer drive yoke, you can hand pack
the outer drive yoke carrier bearing. When packing the
carrier bearing be sure not to damage the outer drive
yoke seal.
B. Universal Joints
Universal joints should be lubricated at each chassis
lubrication (approximately 1,000 mile intervals).
Vehicles operated with the joints submerged must be
lubricated at more frequent intervals. Grease the univer-
sal joints until grease seepage occurs at the caps. If
grease does not seep out of all four caps, rotate univer-
sal joints 180° and reapply grease.
C. Kingpin Bearings
Kingpin bearings should be lubricated at each
chassis lubrication (approximately 1,000 mile intervals).
To ensure thorough lubrication, the front axle should
be raised slightly to relieve weight. The lower kingpin
lube fitting is located in the lower suspension yoke.The
upper kingpin fitting is either on the front or rear of the
upper kingpin bracket (See fig. 3).
Fig. 2
Fig. 3
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