TSE DPT60, Owner'S Manual

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Hubs/Drums/Bearings
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 first.
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.
Bearing size End play Resultant tilt value
35 MM .005" axial .003"/ per inch
42 MM .006" axial .005"/ per inch
50 MM .008" axial .004"/ per inch
It is important to note that most mounted tires will deflect fairly
easily when enough hand pressure is applied while shaking the
tire. Excessive pressure will result in the perception that the
bearings’ tilt is greater than it actually is. This same phenomenon
will occur when checking any wheel end, even those equipped
with conventional bearing sets.