Spicer Single Drive Axles Service Manual: S135L, S135N, S135S, S150L, S150N, S150S - Manual (Page 29)

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Adjust Tooth Contact Pattern
Adjust T
ooth Contact
Pattern
Adjust Ring Gear Position (Backlash)
Note: Tooth contact pattern can be moved only by adjusting
backlash. The tooth contact pattern can be moved in the
direction of heel-to-toe, and toe-to-heel; depth of the
pattern cannot be adjusted. If an acceptable tooth con-
tact pattern cannot be established within limits of back-
lash, contact Spicer Service at 1-800-826-HELP (4357).
If the gear pattern shows incorrect face width contact, change
backlash by adjusting the ring gear.
If the pattern is too close to the edge of the tooth toe, move
the ring gear away from the pinion to increase backlash.
1. Loosen the bearing adjuster on the teeth side of the
ring gear several notches.
2. Loosen the opposite adjuster one notch.
3. Return to adjuster on teeth side of ring gear and
tighten adjuster until it contacts the bearing cup.
4. Continue tightening the same adjuster 2 or 3 notches
and recheck backlash.
If the pattern is concentrated at the heel (too far up
the tooth), move the ring gear toward the pinion to
decrease backlash.
5. Loosen the bearing adjuster on the teeth side of the
ring gear several notches.
6. Tighten the opposite adjuster one notch.
7. Return to adjuster on teeth side of ring gear and
tighten adjuster until it contacts the bearing cup.
8. Continue tightening the same adjuster 2 or 3 notches
and recheck backlash.