Pinion Gear To Ring Gear Engagement - Toro Groundsmaster 4500-D Series Service Manual

Pinion Gear to Ring Gear Engagement

Groundsmaster ® 4500-D/4700-D
19245SL Rev A
TOP LAND
ROOT
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The final position of the pinion gear is verified by using the gear contact pattern
method as described in the following procedure.
GEAR TOOTH DEFINITIONS
Toe − the portion of the tooth surface at the end towards the center.
Heel − the portion of the gear tooth at the outer end.
Top Land − top surface of tooth.
1. Paint the teeth of the ring gear, both drive and coast side, with a gear marking
compound, such as DyKem Steel Blue.
2. Install the input shaft/pinion gear assembly into axle case.
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PROFILE
TOE
HEEL
Figure 271
(Figure 271):
More than 35% total tooth contact
1/3 to 1/2 of entire width
from small end of tooth
Figure 272
Page 7–43 Axles, Planetaries and Brakes: Service and Repairs
LENGTHWISE
BEARING
ARC