Chevrolet Chevelle 1977 Repair Manual page 287

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. 7A-2B).
NOTE:
Cleanliness is an im portant factor in the
overhaul of the transmission. Before attem pting any
disassembly operation, the exterior of the case should be
thoroughly cleaned to prevent the possibility of dirt
entering the transmission internal mechanism. 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.
Do not use solvents which could
CAUTION:
damage rubber seals or clutch facings.
2. W ith transmission in holding fixture remove torque
converter assembly.
3. Remove vacuum m odulator assembly attaching bolt
and retainer.
4. Remove vacuum m odulator assembly, "O" ring seal,
and m odulator valve from case (fig. 7A-3B). Discard "O"
ring.
Inspection of Converter
1. Check converter for leaks as follows (fig. 7A-4B):
a. Install Tool J-21369 and tighten.
b. Apply 80 psi air pressure to tool.
J8763-02
J3289
Fig. 7A-2B-Transmission in Holding Fixture
AUTOMATIC TRANSMISSION
Fig. 7 A - 3 B - R e m o v in g V a c u u m M o d u la t o r A s s e m b ly
c. Submerge in water and check for leaks.
2. Check converter hub surfaces for signs of scoring or
wear.
VACUUM MODULATOR
Fig. 7A-4B-Checkin g Converter for Leaks
(350)7A-3