Toro Groundsmaster 3280-D Service Manual page 384

Gear Pattern Movement Summary
Drive Axles: Service and Repairs
g226457
1. Heel
2. Drive side
Example 3: Backlash incorrect. Thinner pinion position shim necessary.
Adjust backlash to match
1. Decreasing backlash moves the ring gear closer to the pinion.
Drive pattern (convex side of gear) moves lower and toward the toe.
Coast pattern (concave side of gear) moves slightly higher and toward the
heel.
2. Increasing backlash moves the ring gear away from the pinion.
Drive pattern (convex side of gear) moves higher and toward the heel.
Coast pattern (concave side of gear) moves slightly lower and toward the toe.
3. Thicker pinion position shim with the backlash constant moves the pinion
closer to the ring gear.
Drive pattern (convex side of gear) moves deeper on the tooth (flank contact)
and slightly toward the toe.
Coast pattern (concave side of gear) moves deeper on the tooth and toward
the heel.
4. Thinner pinion position shim with backlash constant moves the pinion further
from the ring gear.
Drive pattern (convex side of gear) moves toward the top of the tooth (face
contact) and toward the heel.
Coast pattern (concave side of gear) moves toward the top of the tooth (face
contact) and toward the heel.
Figure 252
3. Toe
4. Coast side
(Figure 252).
Page 8–42 Groundsmaster ® 3280-D/3320
05138SL Rev B