Spicer Drive Axles Service Manual - Manual (Page 16)

14
PINION POSITION
5. Pinion shims are available in the following thick-
nesses.
Inches MM
.005 .127
.010 .254
.030 .762
6. Position shims on carrier housing so oil return holes
align properly. Use a minimum of three shims in a
pack. If the pack is made of different shim thick-
nesses, install the thinnest shims on both sides of
the pack for maximum sealing.
NOTE: Be sure mounting surfaces and shims are free
of dirt and nicks prior to assembly or leaks will occur
and pinion position can be affected.
7. Install pinion and pinion cage assembly into carrier.
NOTE: Studs can be used to assist in alignment.
8. Tighten pinion cage to carrier bolts. (See Axle/
Torque Specifications Chart, pg. 21)
9. An alternative to using the pinion setting gauges is
to follow the procedure described in the following
section.
Pinion Position Complete
PINION SETTING CHART
When a new gear set is being installed, use a microme-
ter to measure the thickness of the old pinion position
shims. Measure each shim separately and add together
to get the total thickness of the original build-up.
NOTE: If old shims are bent or mutilated they
should be replaced.
If a new gear set is being used, notice the (+), (–) or
"0" etching on both the old and the new pinions, and
adjust the thickness of the shims to compensate for the
difference of these two figures (as shown in table on
next page).
For example, if the old pinion is etched +2, and the new
pinion is –2, subtract .004 in. from the thickness of the
original shims used to position the pinion.
If either or both the pinions are etched beyond the
values on this chart, follow the same procedure to
establish correct pinion position.
For example if the old pinion is etched –12 and the new
pinion is etched +9, add .021 inch to the thickness of
the original shims.
After determining the new total build up of pinion
position shims, round the figure off to the nearest
multiple of .005 inch.
Use the
Pinion Setting Chart on the next page as a
guideline to set the pinion.