Chevrolet 1973 Overhaul Manual page 316

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1 .
Pinion Shaft Lock
Plate
2
Pinion Thrust W a s h e r
.
3.
Pinion Shaft
4.
Needle Bearing
W a s h e r
2. Using prick punches or other similar means, mark
each pinion shaft and also the planet carrier
assembly (fig. 25PG), so that reassembling, each
pinion shaft will be reinstalled in the same location
from which it was removed.
NOTE: The pinion shafts are not selectively
fit but it is good practice to reinstall them in
their original locations.
3. Remove the pinion shaft lock plate screws and
rotate the lock plate counter-clockwise sufficiently to
remove it.
4. Starting with a short planet pinion, and using a soft
steel drift drive on the lower end of the pinion
shaft until the pinion shaft is raised above the press
fit area of the output shaft flange. Feed J- 4599 into
the short planet pinion from the lower end, pushing
the planet pinion shaft ahead of it until the tool is
centered in the pinion and the pinion shaft is
removed from the assembly.
NOTE: Planet pinion remover and replacer
Tool J-4599, comes in two pieces, both alike.
Only one is used when removing the planet
of
a m. 0 '
5. Short Planet Pinion
Gear
6. Needle Bearings
7. Long Planet Pinion
Gear
8. Low Sun Gear Thrust
Bearing
Fig. 24PG -Sm all Planet Carrier Assembly-Exploded View
A U T O M A T IC T R A N S M IS S IO N
10
8 9
» *
9.
10.
1 1.
pinion; two, however, must be used when
reassembling.
5. Remove the short planet pinion from the assembly.
6. Remove J-4599, needle bearings and needle bearing
spacers (3) from short planet pinion.
CAUTION: Use care so as not to lose any of
the planet pinion needle bearings. Twently
needle bearings are used in each end and are
separated by a bearing spacer in the center.
7. By following the procedure as outlined in Steps 4, 5
and 6, remove the adjacent long planet pinion that
was paired by thrust washers to the short planet
pinion now removed.
NOTE: Twenty needle bearings are used in
each end of the long pinion separated by a
bearing spacer in the center.
8. Remove the upper and lower thrust washer.
9. Remove and disassemble the remaining planet
pinions, in pairs, by first removing a short planet
pinion and then the adjacent long planet pinion.
7A-13
11
Input Sun Gear
Input Sun Gear
Thrust W a s h e r
Carrier and Output
Shaft
OVERHAUL MANUAL