Spicer Single Drive Axles Service Manual: S170, S190, S590 User Manual
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Seal - Replace
Guidelines for Reusing Yoke
Do not use the yoke if it has any damage on the seal surface
(nicks or scratches).
The surface of the yoke and the lips of the seal form a critical
interface which retains the axle’s lubricant while sealing the
axle from outside contaminants. The condition of the yoke
hub’s surface is a very important factor in determining seal
life.
Carefully inspect the seal surface area of the yoke hub for
signs of wear and damage. Do not reuse the yoke if there is
noticeable wear, such as heavy grooving, beyond normal pol-
ishing from the seal lips.
Note: Do not rework the yoke with abrasives such as emery
paper or crocus cloth. Clean the surface of the yoke as
necessary using chemical cleaners. Remove all trace of
the chemicals from the yoke after cleaning.
Do not use wear sleeves. Wear sleeves increase the yoke
hub surface diameter and cause premature seal wear and
repeat seal failure.
CAUTION
CAUTION