1973 OPEL GT-R service

7C-1281973 OPEL SERVICE MANUAL2. Insert third clutch drum and input shaft through
top of second clutch drum seating third clutch drum
splines into the second clutch plate splines. See Fig-ure x2- 212.
Figure 7C-2 123. Holding second and third clutch assemblies by the
input shaft, lower into transmission case, indexing
ring gear in second clutch drum with long planetary
pinion gear teeth. See Figure
7C-213..----INPUT
SHAFTInstallation of Reverse Clutch
1. Inspect condition of the composition and steel
;:;;;.Do not diagnose a composition drive plate by
A. Dry composition plates with compressed air and
inspect the composition surface for:
1. Pitting and flaking
2. Wear
3. Glazing
4. Cracking
5. Charring
6. Chips or metal particles imbedded in lining
If a composition drive plate exhibits any of the above
conditions, replacement is required.
B. Wipe steel plates dry and check for heat discolora-
tion. If the surface is smooth and an even color smear
is indicated, the plates should be reused. If severe
heat spot discoloration or surface scuffing is in-
dicated, the plates must be replaced.
2. Install the steel reaction plate into the case. See
Figure 7C-214.
Figure 7C-2 143. Install reverse clutch steel plate, composition
plate, steel plate, composition plate, etc., into case.
Use a liberal amount of transmission fluid.
Figure 7C-213

7C-130
1973 OPEL SERVICE MANUAL
Figure 7C-2 17
into case. See Figure 7C-218. Use liberal amount of
transmission fluid on oil seal rings.
GOVERNOR
HUBFigure
7C-2 183. Install snap ring over output shaft using snap ring
pliers such as J-8059. See Figure
7C-219.4. Install new governor body gasket.
5. Bolt governor body to governor hub. Torque to 6-8
lbs. ft. The two governor valves should move freely
after governor body is torqued.
6. Install speedometer drive gear retaining clip into
output shaft. See Figure
7C-220.Figure 7C-219
Figure 7C-220
7. While depressing retaining clip, slide speedometer
gear over output shaft and install gear and retaining
clip.
Installation of Extension Housing
1. Install new extension housing gasket.
2. Slide extension housing over output shaft and
align holes.
3. Align parking
paw1 shaft into extension housing.

7C-1321973 OPEL SERVICE MANUAL
Figure 7C-226
Figure 7C.224
Figure 7C-225
4. Using 3/16” hex head wrench on servo adjusting
bolt, adjust servo apply rod by tightening adjusting
bolt to 40 lbs. in. Back off bolt five (5) turns. exact/u.See Figure
7C-226.5. Tighten lock nut holding adjusting bolt and sleeve
firm with hex head wrench. See Figure
7C-227.
installation of Valve Body
1. I&all steel balls in oil passages in case. See Figure
7C-228.Figure 7C-227
2. Install new case to transfer plate gasket.
3. Locate guide pins in transmission case for correct
alignment of valve body and transfer plate. See Fig-
ure
7C-229.4. Install manual valve into valve body bore using
liberal amount of transmission fluid.
5. Install long side of manual valve link pin into
manual valve. See Figure
7C-230.

7C-1341973 OPEL SERVICE MANUAL
Figure 7C-232
Torque Converter4. Rotate converter to check for free movement.
1. Place transmission on portable jack
2. Slide torque converter over stator shaft and input
shaft.3. Be sure that converter pump hub keyway is seated
into oil pump drive lugs and the distance “A” is
.20”to
.28”. See Figure 7C-232.
SPECIFICATIONS
GENERAL SPECIFICATIONS
Opel Three-Speed Automatic Transmission Fluid
RecommendationsUse DEXRON Automatic Transmission Fluid on/y
in all 1972 model Opel Automatic Transmissions
(GM part No. 1050568-69-70 or any other fluid hav-
ing DEXRON identifications).DEXIRON is an especially formulated automatic
transmission fluid designed to improve transmission
operation.
The oil pan should be drained and the strainer re-
placed every
24,ooO miles and fresh fluid added to
obtain the proper level on the dipstick. See subpara-
graph 2 for proper refill procedures. For cars sub-
jected to heavy city
traff%z during hot weather, or in
commercial use, when the engine is regularly idled
for long periods, the oil pan should be drained and
the strainer replaced every
12,ooO miles.
.
1.Checking and Adding FluidThe Opel three-speed automatic is designed to oper-
ate at the full mark on the dipstick at normal operat-
ing temperature (180 degrees F.) and should be
checked under these conditions. The normal operat-
ing temperature is obtained only after at least 15
miles of highway type driving or the equivalent of
city driving.
Fluid level should be checked at every engine oil
change.
The “FuIl” and “Add” marks on the trans-
mission dipstick indicate one (1)pint
difference. Todetermine proper fluid level, proceed as follows:
To determine proper level, proceed as follows:
1. With manual control lever in Park position start
engine. DO NOT RACE ENGINE. Move manual
control lever through each range.
2. Immediately check fluid level with selector lever
in Park, engine running, and vehicle on LEVEL
surface.At
t,his point, when a reading is made, fluid level on
the dipstick should be at the “FULL” mark.
3. If additional fluid is required, add fluid to the
“FULL” mark on the dipstick.
If the vehicle cannot be driven sufficiently to bring
the transmission to operating temperature and it

7C-1361973 OPEL SERVICE MANUALshould be secured to keep the front wheels in a
straight-ahead position.sand,. mud, or snow, move the selector lever from
“D” to “R” in a repeat pattern while simultaneously
applying moderate pressure to the accelerator. DoRocking Carnot race engine. Avoid spinning wheels when trying
If it becomes necessary to rock the car to free it fromto free the car.
Model DesignationsTrans.
converterReverse Clutch
ModelAssemblyPlates Required2nd Gear
Clutch3rd Gear Clutch
Plates Required
Plates RequiredOpel
1900
OG
GT
CIHInformation
Drive
(Composition Faced:
Drive3Drive3
Green
(Composition
Faced)(CompositionFaced)
Dot ofDriven (Steel)4Driven (Steel) 4
Driven (Steel) 4
PaintWaved1Waved1Waved.1Pressure1Pressure1Pressure1-.
Bolt Torque Specifications
Location
Oil Pan to Case......................................................................Transfer Plate to Valve Body............................................
ReinforcementPlatetoCase..............................................
ValveBodytoCase..............................................................
ServoCovertoCase............................................................
Modulator Assembly............................................................
ConverterHousingtoOilPump........................................
Converter Housing to Case................................................
Selector Lever Jam Nut......................................................
Governor Body to Governor..............................................
ExtensionHousing to Case................................................
Servo AdjustingBolt Lock Nut..........................................
Planetary Carrier Lock Plate..............................................
OilPressureCheckPlug......................................................
Flex Plate to Crankshaft......................................................
Converter to Flex Plate........................................................
ConverterHousingtoCylinderBlock..............................
intermediate Selector Lever to Console
Selector Lever Shaft........................................................
Rear Engine Support to Transmission
CaseExtension..................................................................
Outer Transmission Selector Lever to
TransmissionSelectorLeverShaft..............................
Oil Cooler Line Connector..................................................
Oil Cooler Line to Connector............................................
Oil Cooler Line to Oil Cooler Hose..................................
Oil Cooler Hose to Oil Cooler............................................
Torque
Lb.Ft.7-10
6-8
13.15
13.1516-1812.15
13.17
22.26
8-l 1
6-8
20.30
12.15
20.35
5-736.5
138.42
38.42
Thread
Size
5/16-18
l/6-20
5/16-18
5/16-18
5/16-18
5/16-18
5/16-18
l/4-20
3/8-l 6
18.20
18.22
13.1610-13
1 l-15
1 l-15
11.15

7C.1381973 OPEL SERVICE MANUAL4
5
IFigure
7C-234 Special Tools. Automatic Transmission7C223

I4I
.7C.140 .1973 OPEL SERVICE MANUAL
J-7004-1SLIDE HAMMER
J-2291 3MAIN SHAFT ASSEMBLY TOOL
J-22929SPEEDOMETER DRIVEN GEAR
REMOVER AND INSTALLER
J-22922J-22926TRANSMISSION CASE EXTENSIONSPEEDOMETER DRIVEN
HOUSING SEAL INSTALLERGEAR PIN REMOVER
J-21715DETENT PIN PLUG REMOVER
J-22934CLUTCH PLATE ALIGNING ARBORTRWARC PLIERS
J-22923REVERSE IDLER SHAFT REMOVER
J-2291 I
J-21 684NEEDLE BEARING LOADER
BEARING PRESS PLATE7&56
Figure
7C-235 Special Tools. Manual Transmission

8A-2 1973 OPEL SERVICE MANUAL
HOOD, FENDERS, AND GRILLE
CONTENTS
Subject
DESCRIPTION AND OPERATION:
GTHeadlampOperation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DIAGNOSIS: (Not Applicable)
MAINTENANCE AND ADJUSTMENTS
GTHeadlampMechanism
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MAJOR REPAIR:
Removal and Installation
Hood (1900
- Manta). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fender(1900-Manta). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Headlamp Covering (1900
- Manta). . . . . . . . . . . . . . . . . . . . . . . .Headlamp Assembly
(GT). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Headlamp
CableAssembly(GT). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Grille
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPECIFICATIONS: (Not Applicable)
DESCRIPTION AND OPERATION
DESCRIPTION AND OPERATION OF GT
HEADLAMP MECHANISMThe concealed headlamps are moved mechanically.
Pushing actuating lever on left side of console opens
headlamps, pulling lever closes headlamps. Two
meshing gear segments convert the movement of the
lever to a rotation of 180 degrees. The pivots of the
headlamps lie below the centerline so that with head-
lamps in closed position the headlamp housing is
flush with front sheet metal.
A white indicator lamp in the instrument panel lights
if the headlamps are not completely opened and
locked. The switches of the headlamp electrical sys-
tem are located behind the left headlamp operating
mechanism.
MAINTENANCE AND ADJUSTMENTS
ADJUSTMENT OF HEADLAMP MECHANISMBoth headlamp assemblies must operate in unison in
order to lock in either the open or closed position.
Page No.
8A-2
8A-2
8A-3
8A-3
8A-4
8A-4
8A-6
8A-61. Adjust headlamps to be parallel in any position by
changing length of right headlamp operating rod.
For adjustment loosen clamp bolt (A). See Figure
8A-1.Figure
8A-l Headlamp Operation Adjustments