Spicer Single Drive Axles Service Manual: S170, S190, S590 - Manual (Page 30)

26
Wheel Differential
4. Make sure that the bearings cage is parallel to the
edge of the threaded cup.
5. Use a ratchet or breaker bar and a 1¼" deep wall
socket to turn the flange half threaded bearing cup in
until the ring gear contacts the pinion (zero back-
lash). Back the cup out two notches of the adjust-
ment plate.
6. Turn the plain half adjuster ring until there is zero
preload on the bearings. This is done by turning the
adjuster plate clockwise until you feel the threaded
cup gain resistance. The threaded bearing cup
should only be slightly snugged to achieve a zero
preload condition.
7. Obtain two notches of preload by tightening the plain
half adjustment ring two notches. Start with the
notch at the top, count two notches counter-clock-
wise on the adjuster ring, turn the adjuster ring so
that the notch is facing straight up.
1 - Parallel
1 - Flange Half
2 - Plain Half
1
2
1 - Two Notches
1
1
1