GMC 1989 Light Duty Truck Repair Manual page 199

Figure 32—Checking the Pinion Depth Setting
Remove the pinion nut (12), washer (11), pinion
flange (10), slinger (8) and bearing cone (7).
10. Preload shims (6).
• Install the sh im s th a t w ere rem oved, or
measure the old shims and replace them with
new shims if necessary.
11 Outer bearing (7) and slinger (8).
.
Apply a light coat of axle lubricant to the pinion seal
lip.
12 . Outer pinion oil seal (9) using D-163 (National)
sealer installer (figure 33).
13. Pinion flange (10).
14. Washer (11) and a new pinion nut (12).
£
Tighten (Figures 34 and 35)
The nut (12) while holding the pinion with
J 8614-01. Tighten the nut until it requires a
torque of 2.26-4.53 N-m (20-40 in. lbs.) to
rotate the pinion.
Remove shims to increase the preload.
Add shims to decrease the preload.
Figure 3 3 — Installing th e Pinion Seal
DANA REAR AXLES 4B5-11
Figure 34— Tightening the Pinion Nut
ASSEM BLING THE DIFFER EN TIA L TO THE AXLE
HOUSING
Tools Required:
J 23690 Differential Side Bearing Installer
J 8092 Driver Handle
J 24385-01 Differential Carrier Spreader
1. Assem ble the differential case (22) with master
bearings installed to the axle housing. The pinion
must be installed.
2. Mount a dial indicator having a minimum travel of
0.200-inch with a magnetic base on the ring gear
bolt side of the housing (figure 36).
3. Place the indicator tip on the chalk mark made
earlier.
4. Force the ring gear into mesh with the pinion. Rock
the ring gear to allow the teeth of the gears to mesh.
5. While the force is still applied to the differential
case, set the dial indicator to zero.
6. Force the differential case away from the pinion
gear to obtain an indicator reading. Repeat this
action until a consistant reading is obtained. This
will be the size of the left shim pack.
Figure 3 5 — C hecking Pinion P reload