5–2 Copyright © 1996 General Motors Corp.
AT 500, 1500 SERIES AUTOMATIC TRANSMISSIONS
b. Removal of Torque Converter
(1) Remove the bolts and nuts that hold the
converter retaining device to the transmission housing.
(2) Attach a three-strand sling to the torque
converter. Lift the converter from the transmission
housing and place it on a work table (Figure 5–2).
(3) Refer to Paragraph 6–3 for inspection
(and, for AT 543, rebuild) of the torque converter.
c. Removal of Vacuum Modulator,
Mechanical Actuator
(1) Rotate the transmission, oil pan side up-
ward.
(2) Remove the bolt and retainer from the
transmission case (Figure 5–3).
(3) Remove the vacuum modulator (Figure
5–4). Remove the sealring from the modulator.
(4) For earlier models, remove the modula-
tor valve actuator rod from the transmission case (Fig-
ure 5–4). Later model transmissions have an actuating
rod retained in the modulator valve body. Refer to
Paragraph 3–17
b
for vacuum modulator check.
d. Removal of Breather
NOTE:
Remove breather only if necessary.
(1) Insert the end of a flat head screwdriver
between the breather flange and main housing. Pry the
breather up until there is room to insert a
7
⁄
16
inch
wrench between the breather flange and main housing.
Insert open end of
7
⁄
16
inch wrench under breather
shroud 17 (Foldout 12,A) or under the shrouded cap of
breather 7.
(2) Gently tap opposite end of wrench until
open end of wrench is fully seated around breather 7.
Figure 5–2. Removing Torque
Converter During Overhaul
Figure 5–3. Removing Vacuum Modulator
Retainer Bolt
H02893
TORQUE
CONVERTER
ASSEMBLY
J 23642-01
J 3289-20
TURBINE SHAFT
STATOR
SHAFT
H02894
BOLT
RETAINER
VACUUM
MODULATOR
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