Chevrolet 1988 Light Duty Truck Repair Manual page 215

Figure 71— Installing the Inner Bearing
pinion (figure 72). Rotate the pinion several
tim es to seat the bearings and assure a more
accurate reading pinion depth setting.
9. P in io n d e p th c h e c k in g to o ls D-116-1, D-116-2,
D-115-3, and D-115 to the top of the pinion.
• Place the discs and arbor into the differential
bearing bore.
• Place the pinion height block on top of the
pinion.
• Set the dial indicator at zero (0) and slide the
scooter gage across the arbor (figure 73).
• The indicator will turn to the right or to the left
at the point of greatest deflection, depending
on the pinion marking.
• The needle will move to the left if the pinion is
marked ( + )•
• The needle will move to the right if the pinion
is marked (-).
• If the indicator reading is w ithin 0.05 mm
(0.002-inch) of the pinion m arking, the pinion is
correctly set. If the pinion depth does not meet
Figure 72— Checking the Pinion Preload
DANA REAR AXLES 4B5-23
F-04719
Figure 73— Checking the Pinion Depth Setting
specifications, change the shim pack by the
am ount the indicator needle is from the pinion
marking.
• Remove the pinion nut (12), washer (11), pinion
flange (10), slinger (8) and bearing cone (7).
10. Preload shims (6).
• In s ta ll the s h im s th a t w ere re m o ve d , or
measure the old shims and replace them with
new shim s if necessary.
11. Outer bearing (7) and slinger (8).
• Apply a light coat of axle lubricant to the pinion seal
lip.
12. O uter pinion oil seal (9) using D-163 (N ational)
sealer installer (figure 74).
13. Pinion flange (10).
14. W asher (11) and a new pinion nut (12).
$
T ig h te n (F ig u res 75 and 76)
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.
Figure 74— Installing the Pinion Seal