Chevrolet 10 series 1973, Overhaul Manual

Page: 81 / 522

4 - 5 0 REAR AXLE D IFFERENTIA L CARRIER
DRIVE PIN IO N ASSEMBLY
Removal
1. Remove differential as previously outlined.
2. Check pinion bearing preload as described under
"Drive Pinion - Reassembly". Record the result. If
there is no preload reading, check for looseness of
pinion assembly by shaking the companion flange.
Looseness indicates the need for bearing
replacement.
3. Remove the pinion bearing retainer bolts from the
housing as shown in figure 7E.
4. Remove the pinion and bearing retainer assembly.
It may be necessary to rap on the pilot end of the
pinion to assist the assembly from the carrier.
5. Record the thickness of the shims removed from
between the bearing retainer flange and the carrier
housing.
Disassembly
1. Clamp the pinion assembly in vise.
2. Install Holder J-8614-11 on flange by using two
bolts with flat washers, as shown in figure 8E.
Position J-8614-11 on flange so that the four
notches are toward the flange.
3. Use a suitable sized socket to remove the pinion nut
and washer. Discard the pinion nut and use a new
one upon reassembly.
4. Thread end of J-8614-3 into small O.D. end of
J-8614-2. Then with J-8614-11 installed as in step 2,
insert J-8614-2 into J-8614-11 and turn it 1/8 of a
turn to locked position. Remove flange by turning
J-8614-3 while holding J-8614-11 as shown in figure
9E.
5. Support the bearing retainer as shown in figure 10E
and press out the drive pinion. Do not allow drive
pinion to fall onto the floor.
Fig. 7E—Removing R etainer Bolts
Fig. 8E—Removing P inion N ut
Fig. 9E—Removing Flange
6. Separate the pinion flange, the oil seal, the front
bearing and the bearing retainer. The oil seal may
have to be driven from the bearing retainer if it is
being replaced.
7. Drive the pinion front and rear bearing cups from
the bearing retainer, using a drift.
8. To remove the rear bearing, use J-22912 as shown
in figure 1 IE.
9. Drive the pinion straddle bearing from the carrier
housing, using a drift as shown in figure 12E.
Inspection
1. Clean all parts in a suitable solvent and dry with
air.
2. Inspect the drive pinion for chipped, cracked or
excessively worn teeth and inspect the splines for
wear.
3. Inspect the bearings for worn or pitted rollers or
races. Inspect the pinion flange splines for wear.
J—8614-3
J - 8 6 14-2
J— 8614-11
OVERHAUL MANUAL