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Hub Removal - Standard Bearings
Whenever the hub equipment on your axle must be removed for inspection or
maintenance the following procedure should be utilized.
1. Elevate and support the trailer unit per manufacturers’ instructions.
CAUTION
You must follow the maintenance procedures to prevent damage
to important structural components. Damage to certain structural
components such as wheel bearings can cause the wheel end to come
off of the axle. Loss of a wheel end while the trailer is moving can
cause you to lose control and lead to an accident, which can result in
serious injury or death.
2. Remove the wheel.
3. Remove the grease cap by carefully prying progressively around the
ange of the cap. If the hub is an oil lube type, then the cap can be
removed by unscrewing it counterclockwise while holding the hub
stationary.
4. Remove the cotter pin from the spindle nut.
For E-Z Lube
®
axles produced after February of 2002, a new type of
retainer is used. Gently pry off retainer from the nut and set aside.
5. Unscrew the spindle nut (counterclockwise) and remove the spindle
washer.
6. Remove the hub from the spindle, being careful not to allow the outer
bearing cone to fall out. The inner bearing cone will be retained by the
seal.
Brake Drum Inspection
There are two areas of the brake drum that are subject to wear and require
periodic inspection. These two areas are the drum surface where the brake
shoes make contact during stopping and the armature surface where the
magnet contacts (only in electric brakes).
The drum surface should be inspected for excessive wear or heavy scoring. If
worn more than .020" oversized, or the drum has worn out of round by more
Hubs/Drums/Bearings
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