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PREVENTIVE MAINTENANCE SCHEDULE
PART 8: MAINTENANCE AND SERVICE
through the bearings when initially filling a hub. Maintain
the differential oil level by adding oil until its surface is
even with the bottom of the filler hole (see page 144).
Universal Joint Lubrication
Oil-lubricated Nondriven Hubs
Steering Gear Lubrication
Refer to the Spicer Universal Joints and Driveshafts service manual and lubrication specifications.
Use CD50 synthetic transmission fluid SAE 50W or equivalent. A minimum of 9 oz. (270 ml) of lubricant is required
for proper lubrication of an LMS™ hub; 10 - 13 oz. (295 400 ml) is required for a non-LMS hub, depending on
wheel design. Allow time for the fluid to seep through the
bearings when initially filling a hub. When properly filled,
the fluid level will lie between the fluid level line and 1/4”
above the line. (Note: Remember to replace vent plug
when done.)
Grease-Lubricated Hubs
Repack the hub bearing with clean wheel bearing grease
after disassembling, cleaning, and inspecting.
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Y53-6007
CAUTION: When adding fluid, be sure to use
fluid of the same type. While many fluids have
the same description and intended purpose,
they should not be mixed due to incompatible
additives. If incompatible (insoluble) fluids
are mixed in a power steering system, air bubbles can be produced at the interface of the
two fluids. This can cause cavitation, which
reduces the lubrication between moving parts
in the gear. This could result in worn components. The mixture of two different fluids,
although harmless to individual internal components, may initiate a chemical reaction that
produces a new compound that will attack
seals and other internal components. Do not
mix different fluids.
(R10/06)