automatic transmission OPEL GT-R 1973 Workshop Manual

AUTOMATIC TRANSMISSION 7C- 95
12. Place suitable jack under transmission and
remove transmission support bolts.
13. Lower transmission enough to remove detent
cable and modulator vacuum line.
14. Remove speedometer cable.
15. Remove selector lever.
16. Mark flywheel and converter for reassembly in
same position, and remove converter to flywheel
bolts. See Figure 7C-106.17. Remove converter housing to engine bolts and
tiller tube.
18. Pry transmission loose from engine.
19. Keep rear of transmission lower than front to
prevent converter from falling and install converter
holding fixture J-21366. Lower transmission and
move to bench.
Installation. Opel 1900 and Manta1. Assemble transmission to suitable jack and raise
transmission into position. Rotate converter to per-
mit coupling of fly wheel and converter with original
relationship. Remove J-21366.
2. Install tiller tube and converter housing to engine
block bolts. Torque to 35 lb. ft. DO NOT over
torque.
3. Install flywheel to converter bolts. Torque to 30 lb.
ft.4. Install detent cable to transmission.
5. Connect oil cooler lines.
6. Install lower bolt on starter. Torque to 40 lb. ft.
7. Connect shift linkage to transmission.
8. Connect modulator line.
9. Connect speedometer cable.
10. Install transmission support.
11. Install drive shaft. Torque U-Bolts to 18 lb. ft.
12. Install flywheel cover pan. Torque to 15 lb. ft.
13. Install engine support brackets.
14. Reconnect exhaust system.15. Attach stabilizer supports and tighten stabilizer
bolts in lower control arms.
16. Lower car.
17. Install starter bolts. Torque to 40 lb. ft.
18. Reconnect battery.
19. Fill transmission with fluid as described in
Specifications. Check selector lever and detent cable
adjustment.
Removal GT1. Disconnect battery.
2. Remove dipstick.
3. Pull throttle control rod off ball pin.
4. Remove screws from fan shroud.
5. Raise car and provide support for front and rear.
6. Remove heat protection shield from right side to
make room for exhaust pipe removal.
Figure 7C-957. Detach exhaust pipe from manifold flange.
8. Unhook damper rings on front muffler and tail
pipe from brackets on body floor panel. Place ex-
haust pipe assembly onto rear axle. See Figure 7C-
96.9. Remove propeller shaft. Make sure that spring in
front universal joint does not get lost.

AUTOMATIC TRANSMISSION JC- 97
Figure 7C-101Figure 7C-103
Figure 7C-102
19. Pry detent cable and oil cooler pipes out of retain-
ers on transmission oil pan.
20. Unscrew speedometer cable and pull it out of
speedometer driven gear housing.
21. On both engine sides unscrew engine support
brackets from torque converter housing. Slacken’
front attaching bolt only. See Figure
7C-105.22. Remove torque converter housing cover plate.Figure 7C-104
23. Mark flex plate and converter for reassembly in
same position.
24. Unscrew the three torque converter to
flex plate
attaching bolts. See Figure
7C-106.25. Pry transmission loose from engine.
26. Move transmission rearward to provide clear-
ance between converter and flex plate to install con-
verter holding tool J-21366. Lower transmission and
move to bench.

AUTOMATIC TRANSMISSION 7C- 99Converter Housing Oil SealWith transmission on portable jack and converter
removed, converter housing oil seal may be removed
without disassembling transmission using tool
J-23129, and slide hammer J-7004.
2. Using tool J-23129 remove oil seal with slide ham-
mer.3. Install new oil seal using installer J-21359.
Removal of Oil PanThis operation can be performed with transmission
in vehicle.
1. Remove the twelve oil pan attaching bolts.
2. Remove oil pan and gasket. See Figure
7C-108.Figure
7C-I 10Figure
7C-108
REMOVAL OF VALVE BODY
8 Removal of Valve BodyThis operation can be performed with transmission
in vehicle
1. Remove the manual detent roller and spring, re-
tained by two bolts. See Figure
7C-110.2. Remove the three attaching bolts holding the
strainer assembly to the valve body and remove. Dis-
card gasket.
3. Remove the eight bolts from transfer plate rein-
forcement and remove reinforcement. See Figure 7C-
111.Figure
7C-1 11
4. Remove the four servo cover attaching bolts and
remove servo cover and gasket. See Figure
7C-112.5. Remove remaining eight bolts attaching valve
body to case. Carefully remove valve body with gas-
ket and transfer plate. See Figure
7C-113.Care must be taken so that manual valve and manual
valve link “A” are not damaged or lost during re-
moval of valve body from the case.

AUTOMATIC TRANSMISSION 7C-101
Figure 7C-1 16
-117Figure
7C-118 GT Models
Figure 7C-1 17 GT Modelsthat one case services both models and is machined
to accept selector lever on either side with the unused
hole being plugged.
1. Remove retaining ring From parking actuator rod
to selector inner lever. See Figure 7C-119.
2. Remove selector inner lever locking nut from se-
lector lever shaft.
3. Remove selector inner lever from selector lever
shaft.4. Remove selector lever shaft spring pin by pulling
upwards with small pliers.Figure
7C-1195. Remove selector lever shaft. See Figure 7C-120.
6. Remove selector lever shaft oil seal and discard.
Removal of Modulator Assembly
This operation can be performed with transmission
in vehicle using tool J-23
100.1. Remove vacuum modulator From transmission
case. See Figure
7C-94. Care should be taken not to
lose the modulator plunger.

AUTOMATIC TRANSMISSION 712-1033. Remove extension housing and gasket. See Figure7C- 124.
Figure 7C-124
4. Remove parking
paw1 actuator rod from transmis-
sion case.
Removal of Speedometer Drive Gear, Governor
Body and Governor Hub
1. Depress speedometer drive gear retaining clip and
remove speedometer drive gear by sliding off output
shaft. See Figure
7C-125.
7c-125Figure 7C-125
2. Remove the four (4) attaching bolts from the gov-
ernor body and remove governor and gasket. See
Figure
7C-126.Figure 7C-126
3. Remove governor hub snap ring from output shaft
using snap ring pliers, such as J-8059. See Figure 7C-
128.Figure 7C-128
4. Slide governor hub off the output shaft
Removal of Converter Housing, Oil Pump, Reverse
and Second Clutch Assembly
1. Turn transmission in holding fixture so that con-
verter housing is facing up.
2. Remove the seven converter housing attaching

AUTOMATIC TRANSMISSION 7C-105
Figure 7C-133thrust bearing and race from case by pulling straight
out. See Figure
7C-134.Figure
7C-135Figure
7C-1344. Remove needle thrust bearing and race from rear
of case. See Figure
7C-135.5. Remove low band by slightly compressing band
and pulling straight out. See Figure
7C-137.6. If necessary to remove case vent, install new case
vent. Do not attempt to reinstall old vent.
Disassembly, Inspection and Reassembly of
Converter Housing, Oil Pump and Reverse Clutch1. Remove second clutch assembly from oil pump
shaft. See Figure
7C-138.

J-8092
CONVERTERFigure 7C-142
10. Install new converter housing oil seal using tool
J-21359. See Figure
7C-143.12. Mark relative location of oil pump gears and
remove oil pump gears. See Figure
7C-144.AUTOMATIC TRANSMISSION
712.107Figure 7C-144
13. Using compressor tool J-2590-12 with adapter
J-21420-1 on reverse clutch retaining seat, compress
clutch return springs. See Figure
7C-146.14. Remove snap ring using snap ring pliers such as
J- 8059. See Figure
7C-146.Figure 7C-143
Figure 7C-146
11. Check converter pump hub for nicks, burrs or
damage which could have caused oil seal to leak or
have worn bushing. Remove nicks and burrs.15. Loosen compressor tool J-2590-12 and remove
reverse clutch retaining ring and 24 reverse clutch
springs.

AUTOMATIC TRANSMISSION 7C-109
Figure 7C-149
21. Using a drift on tap, press out oil pump bushing
with arbor press. Use rag or cloth to protect oil pumpface.22. Install new oil pump hub bushing with arbor
press using tool J-23130-1. See Figure
7C-149. Clean
pump body, including all holes and pockets
thoroughly. With oil pump shaft hole “A” facing
downward, scribe an aligning mark on oil pump
shaft inner diameter at the center of the oil groove
to the right of hole “A”. Scribe mark on outer edge
of bushing through the centers of the small and large
drilled holes “B”. Place bushing into oil pump shaft
with small hole up, and align scribe marks on bush-
ing with those made in oil pump shaft. Use arbor
press to drive bushing into oil pump shaft until
seated in the bore. Care must be taken so that bush-
ing is pressed in straight, using the scribe marks as
a guide until firmly seated.
23. Inspect and thoroughly clean the pressure regula-
tor and priming valve assemblies. Immerse all valves
in transmission fluid before installing in bores.
24. Install pressure regulator valve in oil pump body
bore. See Figure
7C-150.25. Install pressure regulator valve, two spring seats,
spring, boost valve and sleeve in oil pump body bore.
26. Depress pressure regulator boost valve sleeve un-
til backend lines up with pin hole and insert pin to
XWP$.27. Install priming valve assembly from front face of
pump. Priming valve retainer should be pressed in
flush with surface of oil pump body. See Figure 7C-
151.28. Inspect oil pump hub oil seal rings. Replace if
damaged or side wear is noted. See Figure
7C-152.29. Inspect reverse clutch piston for damage, Re-
place if necessary.
Figure
7C-150

AUTOMATIC TRANSMISSION 7C-111
OIL PUMP /’ASSEMBLY
ASPklNG
I(ETAINERSNAP RING
PLIERS
h7C146
Figure 7C.15537. Turn oil pump and reverse clutch assembly so
that oil pump face is facing up.
38. Install oil pump gears using the location mark
made before disassembly.
39. Check the end clearance of both gears to the oil
pump face. Clearance should be between
.0005 to
.0035. See Figure 7C-156.Disassembly, Inspection and Reassembly of Second
Clutch
1. Remove ring gear retaining ring from second
clutch drum. See Figure X-157.
GEAR
Figure
7C-1572. Remove ring gear. See Figure
7C-158.
SECOND CLUTCH DRUM
:-157Figure
7C-15641. Replace the oil pump assembly if the end clear-
ance is not within specifications.Figure 76.158
3. Remove second clutch spacer plate retaining ring.
4. Remove second clutch spacer plate. See Figure7c- 159.

AUTOMATIC TRANSMISSION 7C-113
12. Inspect the piston return springs. Evidence of
extreme heat or burning in the area of the clutch may
have caused the springs to take a heat set and would
justify replacement of the springs.
Figure 7C-16313. Inspect second clutch hub bushing for scoring or
wear.14. If necessary, remove second clutch hub bushing
using remover and installer J-23130-6 with driver
handle J-8092. See Figure 7C-164.
P-J-6092
SECOND CLUTCH
DRUM
iJ:23130-6Figure
7C-16415. Clean in solvent to remove any foreign matter.
Install new second clutch hub bushing using tool
J-23 130-6 and driver handle J-8092. Bushing must be
driven in until tool bottoms on bench. See Figure 7C-
164.16. To install second clutch piston into second clutch
drum, use installer tool J-23080 so as not to damage
lip seal. See Figure 7C-165. Use liberal amount of
transmission fluid for ease of installation and to pre-
vent seal damage.
SECOND CLUTCHDRUM
J-23,060Figure
7C-16517. Remove second clutch piston and seal installer
J-23080.18. Install 22 springs and retaining seat on second
clutch piston.
19. Using spring compressor tool J-2590-12 with
adapter J-21420-1 on retaining seat, compress sec-
ond clutch piston return springs. Care should be
taken so that retainer does not catch in snap ring
groove and damage retainer.
20. Install snap ring with snap ring pliers such as
J-
8059.21. Install bronze thrust washer so that the tang seats
in the slot of the second clutch hub. Secure with
petroleum jelly (unmedicated).
22. Inspect condition of composition and steel plates.
Do not diagnose a composition drive plate by co/or.
A. Dry composition plates with compressed air and
inspect the composition surface for:
1. Pitting and flaking
2. Wear
3. Glazing