Removal Of Extension Housing, Speed0 Drive Gear And Governor; Removal Of Valve Body Assembly - Pontiac Grand Prix Service Manual

TURBO HYDRA-MATIC TRANSMISSION M-38 7G-11
2. Place transmission on a CLEAN work bench and
use CLEAN tools during disassembly. Provide CLEAN
STORAGE SPACE FOR PARTS AND UNITS
MOVED FROM TRANSMISSION. An excellent
working arrangement is provided by assembling the
transmission to Holding Fixture J 8763-0 1.
3. The transmission contains parts which are ground
and highly polished, therefore, parts should be kept
separated to avoid nicking and burring surfaces.
4. When disassembling transmission, carefully inspect
all gaskets at times of removal. The imprint of parts on
both sides of an old gasket will show whether a good
seal was obtained. A oor imprint indicates a possible
' f
source of oil leakage ue to gasket condition, looseness
of bolts or uneven surfaces of parts.
5. None of the parts should require forcing when
disassembling or assembling transmission. Use a
rawhide or plastic mallet to separate tight fitting cases
-
do not use a hard hammer.
REMOVAL OF CONVERTER AND MODULATOR
1. With transmission in portable jack, remove Con-
verter Holding Clamp J 21366 (if installed) and
remove converter assembly by pulling straight out.
2. Install Holding Fixture J 8763-01 and Adaptor J
8763-19 onto transmission and place transmission into
Holding Tool Base J 3289-14 on bench. Position
transmission vertically, with extension housing down
and a drain pan on floor beneath transmission.
NOTE:
Before installing Holding ~ i i t u r e J 8763-01
onto transmission, it must be modified so that the
intermediate
accumulator will clear the fixture.
3. Remove vacuum modulator attaching screw and
retainer clip, modulator, O-ring seal and modulator
valve from case. Discard O-ring seal (Fig. 7G-9).
REMOVAL OF EXTENSION HOUSING, SPEED0
DRIVE GEAR AND GOVERNOR
1. Remove bolt, retainer and speedometer driven gear
from side of extension housing.
2. Remove four (4) extension housing-to-case attaching
bolts, extension housing and its square cut oil seal
from case or housing (Fig. 7G-10).
3. If necessary to replace, pry lip oil seal from
extension housing, using a screwdriver (Fig. 7G- 1 1).
4. Depress speedometer drive gear retaining clip and
slide speedometer drive gear off output shaft (Fig. 7G
12).
Fig.
7G-13
Removing Governor Assembly
5. Remove governor cover retaining clip with a
screwdriver.
6. Pry governor cover an4 O-ring seal from case and
withdraw governor assembly. Discard O-ring seal (Fig.
7G-13).
NOTE: Use extreme care not to damage cover
REMOVAL OF VALVE BODY ASSEMBLY
1. Remove oil pan attaching bolt and washer assem-
blies (13), oil pan and oil pan gasket. Discard gasket.
2. Remove oil pump strainer-to-valve body attaching
screws (2) and remove oil pump strainer and.gasket.
3. Remove retaining bolt and detent roller and spring
assembly from valve body.
4. Remove sixteen (16) of remaining seventeen (17)
valve body-to-case attaching bolts, complete draining
fluid from transmission, move transmission to horizon-
tal position and remove last body-to-case bolt.
5. While removing valve body assembly, disconnect
manual control valve link from range selector inner
lever. Remove detent control valve link from detent
actuating lever on valve body (Fig. 7G-14).
6. Remove valve body-to-spacer plate gasket.
7. ~ e m o v e seven (7) spacer support plate bolts and
remove spacer support plate from case (Fig. 7G-15).
8. Remove valve body spacer plate and valve body
spacer plate-to-case gasket.