E900H User Manual 6: Maintenance
02250203-986 R03
Subject to EAR, ECCN EAR99 and related export control restrictions. 45
6.9.3 Wheel bearing lubrication
Refer to Figure 6-2. Proper lubrication is essential to the
proper functioning and reliability
of your portable com-
pressor axle. Wheel bearings should be lubricated at
le
ast once every 12 months, or more frequently to help
insure proper performance. Use wheel bearing grease
that conforms to military specification MIL-G-10924 or a
high temperature wheel bearing grease such as lithium
complex NLGI Consistency #2.
If your axle is equipped with the E-Z Lube feature, the
b
earings can be periodically lubricated without removing
the hubs from the axle. This feature consists of axle spin-
dles that have been specially
drilled and fitted with a
grease zerk in their ends. When grease is pumped into
the zerk, it is channeled to the inner bearing and then
flows back to the outer bearing and eventually back out
of the grease cap hole (refer to Figure 6-2). The proce-
dure is as follows:
1. Remove the rubber plug from the end of the
grease cap.
2. With a standard grease gun filled with a qual-
ity wheel bearing grease, place the gun onto
the grease zerk located in the end of the
spindle. Make sure the grease gun nozzle is
fully engaged on the fitting.
3. Pump grease into the zerk. The old, dis-
placed grease will flow back out of the cap
around the grease gun nozzle.
4. When new, clean grease is observed,
remove the grease gun, wipe off any excess,
and replace the rubber plug in the cap.
Figure 6-2: Typical E-Z Lube axle
1. Rubber plug 5. Grease fitting
2. Outer bearing 6. Metal end cap
3. Inner bearing 7. Spring-loaded double lip seal
4. Grease flow
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