Model 60 Monobeam

Fig. 16 Drive Pinion Installation:

Two separate adjustments affect drive pinion and ring gear tooth contact: pinion depth and pinion to ring gear backlash.

Pinion depth is controlled by a pinion locating shim pack installed between drive pinion inner bearing cup and carrier housing, Fig. 16. This shim pack and inner oil slinger and oil baffle controls the position of the pinion. Adding shims moves pinion toward ring gear and removing shims moves pinion away from ring gear.

Pinion to ring gear backlash is controlled by preload shims located between the differential bearing cup and carrier.

Fig. 6 Ring And Pinion Identification:

On the button of each drive pinion is marked a plus (+), a minus (-) or a zero (0), Fig. 6. These markings indicate the position for each gear set. The position is determined by amount of shims between inner pinion bearing cup and carrier bearing bore. Any pinion depth change is made by changing amount of shims.

If the original gear set is being re-used, measure the slinger, baffle and each shim separately and add each shim measurement to total original measurement. Replace old shims with new shims that equal this measurement, if necessary.

Fig. 7 Drive Pinion Adjusting Shim Thickness Chart:

Fig. 8 Drive Pinion Adjusting Shim Thickness Chart (Metric):

If a new gear set is being used, notice the plus (+), minus (-) or zero (0) etchings on both original and new drive pinion and add or subtract shims according to charts in Figs. 7 and 8 to compensate for differences between old and new pinion.