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DRIVE PINION GEAR DEPTH
MEASUREMENT
AND ADJUSTMENT
WITH TOOL SET
D-116
The following drive p i n i o n gear depth (i.e., the
depth of the gear teeth mesh between the drive p i n -
i o n gear and the r i n g gear) measurement and adjust-
ment procedure involves u s i n g Special Tool Set D-
116.
(1) Insert Master P i n i o n Block Tool D-120
(for
Model 60 and 6 0 M axles) or Tool D-137 (for Model 70
axles) into the drive p i n i o n gear shaft bore i n the dif-
ferential housing (Fig. 22).
Fig. 22 Pinion Block Tool Inserted In Shaft Bore
(2) Place A r b o r Disc Tools D-116-2 on A r b o r Tool
D-115-3 and position t h e tool set i n the differential
housing w i t h the disc tools located i n the differential
bearing cradles (Fig. 23). T h i s is the centerline of the
r i n g gear/axle shaft.
Fig. 23 Arbor Disc & Arbor Tools In Housing
(3) Place P i n i o n H e i g h t Block Tool D-116-1 on top
of the master p i n i o n block tool and against the arbor
tool (Fig. 24).
(4) Place Gauge Block Tool D-115-2 and D i a l I n d i -
cator Tool D-106-5 on the lowest step of the p i n i o n
height block tool (Fig. 25). Ensure t h a t the gauge
Fig. 24 Pinion Height Block Tool Against Arbor Tool
block tool is r e s t i n g f i r m l y on the lowest step of p i n -
ion h e i g h t block tool a n d "zero" t h e d i a l indicator
pointer.
Fig. 25 Drive Pinion Gear Depth Measurement
(5) W i t h t h e d i a l indicator pointer "zeroed", move
the gauge block tool t o w a r d the arbor tool u n t i l the
t i p of t h e d i a l indicator plunger contacts the arbor
tool (Fig. 25). Slide the gauge block tool ( w i t h the
d i a l indicator) across and back and f o r t h along the
arbor tool w h i l e observing the d i a l indicator pointer.
Record t h e longest plunger t r a v e l distance, whether
i n w a r d
("-")
or o u t w a r d (" + "), indicated by
the
pointer.
T h e longest p l u n g e r t r a v e l d i s t a n c e indicated,
plus o r m i n u s the depth v a r i a n c e e t c h e d into the
face of the d r i v e p i n i o n gear, i s the
r e q u i r e d
t h i c k n e s s for the d r i v e p i n i o n g e a r depth shims.
(6) Measure t h e thickness of each depth shim sep-
arately w i t h a micrometer and combine the shims
necessary to o b t a i n the t o t a l required depth shim
"pack" thickness. I f equipped, the oil slinger lo-
cated b e t w e e n the r e a r b e a r i n g a n d the thrust
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