-61-
Hubs/Drums/Bearings
CAUTION
Do not lift or support the trailer on any part of the axle or suspension
system. Never go under any trailer unless it is properly supported on
jack stands which have been rated for the load. Improperly supported
vehicles can fall unexpectedly and cause serious injury or death.
2. Check for excessive wheel end clearance by pulling the tire assembly
towards you and by pushing the assembly away from you. Slight end play
is acceptable.
3. Rotate tire slowly forwards and backwards. The wheel assembly should
turn freely and smoothly.
4. Excessive wheel end play, restriction to rotation, noise, or “bumpy”
rotation should be remedied by replacing the bearing unit.
5. Bearing units should be inspected every year or 12,000 miles whichever
comes rst.
Note: A slight amount of grease weeping from the seal area is normal.
Excessive leakage may indicate abnormal bearing operation.
Nev-R-Lube
®
Bearing End Play Inspection
The following lists the maximum axial end play for each of the sizes of
Nev-R-Lube
®
bearings and the amount of tilt that can be expected. Since there
are a large number of wheel and tire combinations in use on trailers, the tilt is
expressed in inches per inch. The movement as measured at the tire tread can
be found by the following method:
Example: if the tilt value is shown as .003" per inch and the tire
measures 30" in diameter, simply multiply .003" X 15" (1/2 tire
diameter) = .045" which is the total expected movement at the tires’
outer diameter.
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