Chevrolet 1973 Overhaul Manual page 327

7 A -2 4 A U T O M A T IC T R A N S M IS S IO N
TRANSMISSION DISASSEMBLY AND REASSEMBLY
DISASSEMBLY
1. Install Holding Fixture J-8763-02 on transmission
and place into Holding Tool base J-3289-20 with
converter facing up (fig. 2M).
NOTE: Cleanliness is an important factor in
the overhaul of the transmission. Before
attempting any disassembly operation, the
exterior of the case should be thoroughly
cleaned to prevent the possibility of dirt
entering the transmission internal mecha­
nism. During disassembly, all parts should be
thoroughly cleaned in cleaning fluid and then
air dried. Wiping cloths or rags should not be
used to dry parts.
CAUTION: Do not use solvents which could
damage rubber seals or clutch facings.
2. With transmission in holding fixture remove torque
converter assembly.
3. Remove vacuum modulator assembly attaching bolt
and retainer.
4. Remove vacuum modulator assembly, "O " ring
seal, and modulator valve from case (fig. 3M).
Discard "O " ring.
REMOVAL OF EXTENSION, SPEEDOMETER
DRIVEN GEAR, GOVERNOR, OIL PAN
AND STRAINER
1. Remove four housing to case attaching bolts.
J 8 7 6 3 -0 2
J 3 2 8 9
Fig. 2 M -T ra n sm issio n in Holding Fixture
2. Remove extension housing from case and remove
square cut "O " ring seal from extension housing.
3. Remove extension housing lip seal using screw
driver (fig. 4M).
4. If extension housing bushing is to be replaced,
collapse bushing (fig. 5M) and refer to Figure 94M
for installation.
5. Install speedom eter drive gear remover tool
J-21427-01 and J- 9539 bolts with J-8105 or suitable
V A C U U M M O D U L A T O R
O -R IN G -S E A L
Fig. 3M--Removing Vacuum Modulator Assembly
Fig. 4M --Removing Extension Housing Lip Seal
E X T E N S IO N H O U S IN G
LIP SEAL
OVERHAUL MANUAL