Lawn Mower User Manual

Groundsmaster 4100--DPage 6 -- 30Axles, Planetaries and Brakes
Gear Pattern Movement Summary
Everygearhasacharacteristicpattern.Theillustrations
showtypicalpatternsonlyandexplainhowpatternsshift
as gear location is changed.
1. If contact is towardthe heel or baseof the gear (Fig.
44):
A. Install thicker or additional bearing case shim(s)
to move pinion shaft toward ring gear.
B. Install thinner or remove differential bearing
shim(s) to move ring gear backward.
C. Repeatuntilpropertoothcontactand piniongear
to ring gear backlash are correct.
2. Ifcontact istowardthetoeortipof thegear (Fig.45):
A. Install thinner or remove bearing case shim(s) to
move pinion shaft away from ring gear.
B. Install thicker or additional differential bearing
shim(s) to move ring gear forward.
C. Repeatuntilpropertoothcontactand piniongear
to ring gear backlash are correct.
Figure 44
Heel Contact Base Contact
Figure 45
Toe Contact Tip Contact