GMC 1982 Light Duty Truck Service Manual page 433

Fig. 4B1 -12-Scribe Marks
for later reference. See figure 4 B 1 -12.
6. Install Tool J-8614-11 on pinion flange and remove
pinion flange self-locking washer faced nut as shown in
figure 4B1-13. (Position J-8 614 -11 on flange so that the
four notches are toward flange.) Save scribed nut for
reinstallation.
7. Thread pilot end of Tool J-8614-3 into small O.D. end
of J - 8 6 14-2. Then with J-8614-11 installed as in Step 6,
insert J - 8 6 14-2 into J-8 6 1 4 -1 1 and turn it 45 degrees to
locked position. Remove flange by turning J-8614-3
while holding J - 8 6 14-11 as shown in figure 4 B 1 -14.
8. Pry old seal out of bore, using a screw driver or a
ham m er and chisel.
Inspection
1. Inspect pinion flange for smooth oil seal surface, worn
drive splines, damaged ears, and for smoothness of
bearing contact surface. Replace if necessary.
2. If deflector requires replacement, remove by tapping
from flange, clean
Fig. 4Bl-13-Rem oving Nut from Drive Pinion
up stake points; install
Fig. 4B1-14-Drive Pinion Flange Removal
new deflector, and stake deflector at three new equally
spaced positions. Staking operation must be performed
in such a manner that the seal operating surface is not
damaged.
In sta lla tio n
1. Lubricate cavity between the seal lips of the pinion
flange oil seal with a lithium-base extreme pressure
lubricant.
2. Position seal in bore and place gauge plate J-22804-1
over seal and against seal flange. The gauge plate
assures proper seating of seal in carrier bore.
3. Use J - 2 1057 or J-22388 for the 9 1/2 inch ring gear, as
shown in figure 4B1-15, to press seal into carrier bore
until gauge plate is flush with the carrier shoulder and
seal flange. T u rn gauge plate 180° from installed
position; seal must be square in carrier bore to seal
properly against pinion flange.
4. Pack the cavity between end of pinion splines and
pinion flange with a non-hardening sealer (such as
Fig. 4B1-15-Pinion Oil Seal Installation
REAR A X LE 4 B 1 -5
J-22804-1
J-21057