Pinion Bearing Installation; Pinion Installation - GMC T Series 1994 Repair Manual

J 33837-1
J 33837-3
J 33837-4
Figure 17— Installing the Inner Pinion Bearing Cup
2. Pinion gears (56).
• Position one pinion gear (56) between the side
gears and rotate the gears until the pinion gear
is directly opposite the opening in the case.
• Place the other pinion gear (56) between the
side gears, making sure the hole in both pinion
gears line up.
3. Thrust washers (55).
• Rotate the pinion gears toward the opening
enough to permit the thrust washers to slide in.
4. Shaft (52) and bolt (36).
5. Ring gear (37) onto the differential case (35).
NOTICE: Refer to "Notice" on page 4C3-1.
6. Bolts (34).
v
Important
Always install new bolts. Never reuse the old
bolts.
Tighten
&
• Bolts (34) alternating in progressive steps to 80
N.m (60 lbs. ft.).
PIN IO N BEARING
■n- Install or Connect (Figures 1, 2, 16 and 17)
Tool Required:
J 33837 Pinion Bearing Remover and Installer
1. Bearing (41) into the case using J 33837-1,
J 33837-3, and J 33837-4 (figure 16).
2. Bearing (39) into the case using J 33837-1,
J 33837-3, and J 33837-4 (figure 17).
F1786
PIN IO N DEPTH ADJUSTM ENT
Tools Required:
J 33838 Pinion Depth Setting Gage
J 29763 Dial Indicator
1. Pinion depth is adjusted by selecting a shim (38) of
the proper thickness.
2. Lubricate the inner and outer pinion bearings liber­
ally with axle lubricant.
3. Hold the pinion bearings in position and install
J 33838 and J 29763 (figure 18). Set the dial indi­
cator at ZERO, then position the indicator in
J 33838. Push the dial indicator downward until the
needle rotates approximately 3/4 turns clockwise.
4. Tighten the dial indicator in this position.
5. Set the button of J 33838 on the differential bear­
ing bore (figure 18).
6. Rotate the tool slowly back and forth until the dial
indicator reads the lowest point of the bore. Set the
dial indicator to ZERO. Repeat the rocking action
of the tool to verify the ZERO setting.
7. After the ZERO setting is obtained and verified,
move the tool button out of the differential side
bearing bore (figure 18). Record the dial indicator
reading.
8. The dial indicator reading is equal to the required
shim size.
Example: If the dial indicator reads 0.84 mm
(0.003 inch) in step 7, a 0.84 mm (0.003 inch) shim
is required. Available shim sizes are listed in
" Specifications."
9. Remove the tools and bearing cones.
PIN IO N INSTALLATION
Install or Connect (Figures 9 and 19, 20, and
21)
Tools Required:
J 33785 Bearing Installer
J 8614-01 Pinion Flange Remover
J 33782 Seal Installer
1. Shim (38) to the pinion gear (37).
• The shim must be of the proper size, as select­
ed previously.
2. Bearing (39) onto the pinion gear (37) using
J 33785 (figure 19).
3. New spacer (40) onto the pinion gear (37).
4. Bearing (41) into the case.
5. Seal (42) into the case using J 33782 (figure 20).
6. Pinion gear, with bearing and spacer, to the case.
INSTALLATION