Chevrolet 1973 Overhaul Manual page 404

2. Inspect splines for damage.
3. Inspect bushings for scoring or galling. If necessary
to replace, proceed as follows:
SUN GEAR SHAFT BUSHING-FRONT AND
REAR
Remove
With sun gear shaft properly supported, using Tool
J-21465-15, with slide hammer and Adapter J-2619,
remove bushing.
Replace
Using Tool J-21465-5 with Driver Handle J-8092 press or
drive replacement bushing into place until tool bottoms.
INSPECTION OF M AIN SHAFT
1. Inspect shaft for cracks or distortion.
2. Inspect splines for damage.
3. Inspect ground bushing journals for damage.
4. Inspect snap ring groove for damage.
5. Make sure that lubrication holes are open.
NOTE: If replacement of mainshaft is
required, make sure that the orifice cup plug
in the service m ainshaft is removed.
INSPECTION OF FRONT AND REAR
BANDS, SUPPORT TO CASE SPACER
1. Inspect lining for cracks, flaking, burring, or
looseness.
2. Inspect bands for cracks or distortion.
3. Inspect end for damage at anchor lugs or apply
lugs.
INSPECTION OF CASE EXTENSION - ALL
EXCEPT CL MODEL
1. Inspect bushing for excessive wear or damage. If
replacement is necessary, remove rear seal and with
extension housing properly supported, remove
bushing as follows:
a. (All except CM and CL Models) Using tool
J-22419, with Driver Handle J-8092, drive or
press replacement bushing into place, flush to
.010 below oil seal counter bore area. Stake
bushing, using tool J-21465-10. Stake marks to
be in bushing lubrication grooves.
b. (CM Model) Using Tool J-8400-19 (or J-9640)
with Driver Handle J-8092, drive or press
replacement bushing into place flush to .010
below oil seal counter bore area. Stake bushing,
using tool J-21465-10 (or J-8400-22). Stake
marks to be in bushing lubrication grooves.
2. Inspect gasket mounting face for damage.
A U T O M A T IC T R A N S M IS S IO N
3. Inspect housing for cracks or porosity.
4. Be sure rear seal drain back port is not obstructed.
INSPECTION OF CASE EXTENSION - CL
MODEL
1. Inspect seal (case extension to case) groove for
damage.
2. Inspect for cracks, or porosity.
3. Inspect dowel pin in rear face for damage.
4. Inspect oil seal for damage. If replacement is
required, proceed as follows:
a. Pry oil seal from extension.
b. Apply non-hardening sealer to outside of new
oil seal, and install oil seal into case extension
using tool (J-24057) (see fig. MOT).
5. Inspect ball bearing assemblies. If they are
damaged, or if they require cleaning, proceed as
follows:
a. Remove rear seal.
b. Remove snap ring.
c. Remove ball bearings and bearing spacer, using
a brass rod on the outside race of bearing. An
arbor press can be used if tool to press bearing
out is located on outer race of bearing.
DO N O T locate against inner race
CAUTION:
or balls.
d. Install ball bearing assembly and spacer,
bearing first.
e. Install ball bearing assembly and snap ring.
f. Install new rear oil seal.
INSPECTION OF MODULATOR AND VALVE
1. Inspect modulator assembly for any signs of
bending or distortion (fig. 110T).
2. Inspect "O " ring seal seat for damage.
M O D U L A T O R VALVE
M O D U LA T O R A SS E M B L Y
OIL R IN G
Fig. 110T -Modulator Assembly and Valve
7A-101
OVERHAUL MANUAL