a. Changing Axle Hub Oil.
Changing oil on front and rear axles involves both planetary hub assemblies and differential centers.
Ensure vehicle is in N (Neutral) and chocked with chock block.
Place drain pan under axle hub.
Rotate wheels so axle hub oil drain plug is in
6 o'clock position.
If vehicle has recently been driven, oil may
be hot. To avoid personal injury, wear
appropriate safety equipment. Failure to
comply may result in injury or death to
Remove oil drain plug and drain oil into
Inspect drain plug for metal shavings. If
excessive metal shavings are found, notify
When oil is completely drained, replace oil
drain plug and tighten securely.
The axle hub oil level plug has two levels,
marked STEER and RIGID. Ensure correct
level is used for each axle. Front axle is the
STEER axle, and the rear axle is the RIGID
Rotate wheels until oil level plug is aligned
for the axle hub being serviced.
Remove oil level plug from axle hub.
Ensure oil is level with bottom of oil level
plug hole. Failure to comply may cause
severe damage to the equipment.
Fill axle hubs with correct grade of oil.
Secure oil drain plug and repeat procedure
for remaining axle hubs.