
322 LIGHT AND HEAVY VEHICLE TECHNOLOGY
Heel contact
Face contact Toe contact
Flank contact
To correct, increase thickness of pinion
height adjusting washer in order to bring
drive pinion close to
ring
gear.
To correct, reduce thickness of pinion
height adjusting washer in order to make
drive pinion go away from ring gear.
d
SPD007
Figure 20.18 Identifying and correcting tooth contact patterns (Nissan)
Worm drive adjustments
A few brief notes on the method of adjusting this
obsolete type of final drive may be of background
interest. In a once typical heavy-vehicle application,
the roller bearings carrying the worm wheel and differ-
ential wer ...