Pinion Installation - GMC T Series 1994 Repair Manual

Figure 19— Dial Indicator On The Arbor
C. A negative (-) pinion marking indicates that the
distance between the ring gear centerline and
the pinion head must decrease by the number
of thousandths marked on the pinion. This
means that the shim pack will increase by the
same number of thousandths.
D. A pinion etched zero (0) will use the nominal
setting determined by this procedure.
9. Measure each shim separately with a micrometer
and add the dimensions together to obtain the total
shim pack thickness. If a baffle or slinger is used,
these also must be measured and included in the
shim pack.

PINION INSTALLATION

-► 4-
Install or Connect (Figures 20 through 24)
Tools Required:
J 5590 Rear Pinion Bearing Cone Installer
J 7818 Front Pinion Bearing Cup Installer
J 8092 Handle
J 8614-01 Pinion Flange Remover
D-128 Dial Indicator Set or Equivalent
D -115-3 Arbor
D-116-2 Arbor Discs
C-4171 Handle
C-4204 Rear Cup Installer
1. Place the required amount of shims (and baffle if
used) in the inner bearing bore.
2. Drive the inner bearing cup into the axle assembly
using C-4171 and C-4204. The cup must be seated
on the shims (figure 20).
3. Drive the outer bearing cup into the axle assembly
using J 7818 and J 8092 (figure 21).
4. Inner bearing cone (and slinger if used) on pinion.
Drive the bearing onto the pinion shaft using
J 5590 (figure 22).
5. Outer bearing (7), slinger, and oil seal, using
D-187-A.
• Apply a light coat of axle lubricant to the pinion
seal lip.
Figure 21— Installing Outer Pinion Bearing Cup
F4718
F4719