1973 OPEL GT-R oil

REFRIGERANT COMPONENTS ALL MODELS96.61
CAPILLARY T”BEFigure 98.95 Evaporator and Expansion Valve
Assembly GT
valve from refrigerant lines, and tape closed open
ends of lines and inlet and outlet ports of expansion
valve.
Installation5. Install resistor assembly.
6. Install evaporator assembly into car and install
mounting bracket. See Figure
9B-96.Figure 98.96 Evaporator and Blower Assembly
- GT
If expansion valve or refrigerant lines have been ex-
posed to
,the atmosphere for any amount of time and
moisture may have entered the valve or the system,
flush the system and install new receiver-dehydrator
or valve as necessary.7. Untape the refrigerant lines and the inlet and
outlet pipes from the evaporator and install using
new o-rings on line fittings.
Due to the possible adjustment difficulties involved
if the expansion valve is disassembled, disaisembly of
the valve is not recommended. The valve may be
cleaned by submerging it in a bath of trichlorethy-
lene, alcohol, or similar solvent. Dry by blowing iil-tered compressed air through the outlet port of the
valve. The filter screen at the inlet port may be re-
placed. Remove screen by threading a lo-32 NF
screw intp old filter screen. With a washer and a nut
on the screw arranged to work as a puller screw, hold
the body of the screw and turn the nut. Insert the
new filter screen into the inlet port and lightly tap
screen only enough to seat.
1. Install expansion valve using new o-rings during
installation. Lubricate o-rings prior to installation
using No. 525 viscosity oil.
2. Install evaporator assembly and case attaching
screws.
3. Install blower motor assembly into case and se-
cure with attaching screws.
4. Install finger guard shields and fan housing case.Figure 98-97 Refrigerant Hoses and Hose Clamps
Under Car
- GT

REFRIGERANT COMPONENTS ALL MODELSSB-632. Install condenser into car and secure with 4 at-
taching screws. See Figure
9B-101.3. Untape discharge line and pipe and install using
new o-rings lubricated with No. 525 viscosity oil.
Figure
99.102 Condenser - Receiver - Dehydrator
O-Rings. GT
4. Untape and install inlet and outlet pipes into the
receiver-dehydrator using new o-rings lubricated
with No. 525 viscosity oil.
Figure
98-103 Condenser Assembly - GT
5. Evacuate system. Refer to EVACUATING SYS-
TEM.
6. While system is being evacuated, install the char-
coal cannistor, washer jar, battery tray and battery
and connect negative battery cable.
7. Charge system. Refer to CHARGING SYS-
TEM.
DISASSEMBLY AND REASSEMBLY OF CLUTCH
DRIVE PLATE AND SHAFT SEALIt is not necessary to remove the compressor or dis-connect refrigerant lines to remove or install clutch
parts on the GT, however, the compressor must be
removed from the Opel 1900
- Manta.
Disassembly
1. Firmly clamp holding fixture (J-9396) in a vise
and attach compressor assembly to fixture (see Figwe
9B-104).
-_ .s -Figure SE-104 Removing or Installing Shaft Nut
2. Hold hub of clutch drive plate with wrench
(J-9403). Using special thin wall 9/16 inch socket
(J-9399) and 3/g inch drive, remove shaft nut.
3. Install threaded hub puller (J-9401) onto hub of
clutch drive plate (see Figure
9B-105). Hold body of
hub puller with wrench, tighten center screw of hub
puller, and lift off clutch drive plate and woodruff
key.Figure SE-105 Removing Clutch Drive Plate

9B-64 1973 OPEL SERVICE MANUAL
4. Using No. 21 Truarc pliers (J-5403) take out
retainer ring from hub of clutch drive plate (see Fig-
ure 9B-106). Lift our spacer.
Figure 95.106 Removing
or Installing Retainer Ring inClutch Drive Plate5. If compressor has an absorbent sleeve in the neck,
pry out the sleeve retainer and remove the sleeve.
Remove the seal seat retainer ring, using No. 21
Truarc pliers, Tool J-5403, (see Figure
9B-107).
SEAL SEATFigure 98.107 Removing or Installing Shaft Seal Seat
Retaining Ring6. Thoroughly clean the area inside the compressor
neck surrounding the shaft, the
ezxposed portion of
the seal seat and the shaft itself of any dirt or foreign
material. This is absolutely necessary to prevent any
such material from getting into
t:he compressor.
7. Remove the seal seat (see Figure 9B-108) using
Tool J-23128. Insert Tool
J-2312E; into seal seat and
tighten, using a twisting motion remove the seal seat.96-82
Figure SE-108 Removing or Installing Ceramic Shaft
Seal seat
8. Remove the seal assembly, using Tool J-9392.
Press tool downward on seal while twisting it clock-
wise to engage the tabs of the seal assembly. Gently
but firmly, pull tool straight out (see Figure
9B-109).9. Remove the seal seat
“0” ring, using Tool J-9553
(see Figure
9B-110).10. Recheck the inside of the compressor neck and
the shaft. Be sure these areas are perfectly clean
before installing new parts.
Reassembly
1. Coat the new seal seat
“0” ring with clean refrig-
eration oil and install it in its groove in the compres-
sor neck. Tool J-21508 may be used to accomplish
this. (See Figure
9B;,lll)2. Coat the
“0” ring and seal face of the new seal
assembly with clean refrigeration oil. Carefully
mount the seal assembly to Tool J-9392 by engaging
the tabs of the seal with the tangs of the tool.
3. Place seal protector, Tool J-22974, over end of
shaft and carefully slide the new seal assembly onto
the shaft. Gently twist the tool clockwise while push-
ing the seal assembly down the shaft until the seal

REFRIGERANT COMPONENTS ALL MODELS96-66Figure 98.109 Removing or Installing Shaft Seal
SEAL SEAT
-Figure 98-l 10 Removing Seal Seat O-Ring
assembly engages the flats on the shaft and is seated
in place. Disengage the tool by pressing downward
and twisting tool counterclockwise.
4. Coat ihe seal face of the new seal seat with clean
refrigeration oil. Mount the seal seat on Tool J-9393
and install it in the compressor neck, taking care not
to dislodge the seal seat
“0” ring and being sure the
seal seat makes a good seal with the “0” ring.FRONT
L’HEAD
\Figure 96-l 11 Installing Seal Seat O-Ring
5. Install the new seal seat retainer ring with its flat
side against the seal seat, using No. 21 Truarc pliers
(J-5403). Use the sleeve from
Top1 J-9393 to press in
on the seal seat retainer ring so that it snaps into its
groove. Remove seal protector
Jz22974 from the end
of the shaft.
6. Install Compressor Leak Test Fixture (J-9625)
on rear head of compressor and connect gage charg-
ing lines as shown in Figure
9B-112. Pressurize suc-
tion side of compressor with Refrigerant-12 vapor to
drum pressure. Temporarily install the shaft nut and,
with compressor horizontal and oil sump down,
ro-tate the compressor shaft in nornial direction of rota-
tion several times by hand. Leak, test the seal with a
propane torch type leak
detectot; in good condition.
Correct any leak found. Remove and discard the
shaft nut.
7. Remove any excess oil, resulting from installing
the new seal parts, from the shaft and inside the
compressor neck.8. Install the new absorbent sleeve by rolling the
material into a cylinder, overlapping the ends, and
slipping it into the compressor neck with the overlap
at the top of the compressor. Using a small screw-
driver or similar instrument, carefully spread the
sleeve so that in its final position, the ends butt
together at the top vertical centerline. Install the new
sleeve retainer so that its flange face will be against
the front end of the sleeve. Using the sleeve from
Tool J-9393, press and tap with a mallet, setting the
retainer and sleeve into place, until the outer edge of

REFRIGERANT COMPONENTS ALL MODELS9B- 67
Figure 9B-1 13 Positioning Clutch Drive Plate on Shaft
PLATE ON UNTlL THERE
IS APPROXIMATELY
3/32”-
. l m l GAP BETWEEN SURFACE
OF
PLATFigure
98-1 14 Installing Clutch Drive Plate
drive plate should be approximately l/32 to l/16
inch (see Figure
9B-115).
Flgure 98-1 16 Torquing Shaft Nut
BE98.89
DISASSEMBLY OF PULLEY ASSEMBLY, AND
COIL AND HOUSING ASSEMBLY
It is not necessary to remove the compressor or dis-connect refrigerant lines to remove or install clutch
parts on the GT, however, the compressor must be
removed from the Opel 1900
- Manta.
Disassembly
1. Disassemble clutch drive plate.
2. Using No. 26 Truarc pliers (J-6435) remove bear-ing to head retainer ring (see Figure
9B-116).Figure
9B-1 16 Removing or Installing Bearing to
Head Retainer Ring3. Place puller pilot (J-9395) on,hub of front head
and take off pulley assembly (see Figure
9B-117),using pulley puller (J-8433).
Puller pilot (J-9395) must be used. If force is exertedon shaft, damage will result to the internal parts of
the compressor.4. Remove bearing to pulley retaining ring with a
small screwdriver (see Figure
9B-118).5. Drive out bearing (see Figure
9B-119) by use of
puller Pilot (J-9398) and Handle (J-8092).
Do not take out pulley bearing unless it is going to
be replaced as removal may damage bearing.6. Mark position of coil and housing assembly in
relationship to shell of compressor, remove coil and
housing retainer ring (see Figure
9B-120) using No.

98-68 1973 OPEL SERVICE MANUAL
J-9395:
Figure 9B-1 17 Removing Pulley Assembly
Figure
9B-1 10 Removing Pulley Bearing Retainer
26 truarc pliers (J-6435), and lift out coil and housing
assembly.
Reassembly
1. Reassemble coil and housing assembly reverse of
disassembly.
2. Drive new bearing into pulley assembly (see Fig-
ure 9B-121) with installer (J-9481) and handle
(J-
8092).3. Lock bearing in position with bearing to pulley
retainer ring (see Figure 9B-118).
4. Drive pulley assembly onto hub of front head (seeFigure 99-l 19 Removing Bearing From Pulley
AssemblyFigure 9B-120 Removing or Installing Coil and
Housing Retainer Ring
Figure 9B-122) using installer (J-9481) and handle
(J- 8092).
If the pulley assembly is going to be reused, clean thefriction surface with trichlorethylene, alcohol, or a
similar solvent.
5. Lock pulley assembly in position with bearing to
head retainer ring (flat side of retainer ring down-
ward) using No. 26 Truarc pliers (J-6435). (See Fig-
ure
9B-116).

REFRIGERANT COMPONENTS ALL MODELS96.69
J-9481\J-8092
/BEARING
Disassembly of Rear Head, Oil Pump, Rear
Discharge Valve Plate, and Rear Suction Valve
Reed Disc
If compressor is not going to be disassembled any
further than removal of rear head, oil pump, rear
discharge valve plate, or rear suction valve reed disc,
omit Steps “1, 2 and
4”.
1. Disassemble clutch drive plate and shaft seal.
2. Disassemble pulley assembly, and coil and hous-
ing assembly.
3. Clean surface of compressor shell and dry with
compressed air.
4. Remove compressor from holding fixture
(J-
9396), unscrew drain screw. Drain, measure and re-
cord amount of oil in compressor.
Figure
98-121 Installing Bearing into Pulley Assembly 5. Reinstall compressor in holding fixture (J-9396)
positioned as shown in Figure 9B-123.
Figure SB-122 Installing Pulley Assembly
6. Reassemble clutch drive plate.
DISASSEMBLY AND REASSEMBLY OF INTERNAL
PARTS OF COMPRESSOR AND LEAK TESTING
COMPRESSOR
A clean work area and a place for each part removed
is required to properly disassemble and reassemble compressor. The internal parts of the compressor
must be kept free of dirt or foreign material.
When working with compressor, under no circum-
stances should compressor be rested on pulley end.
PRESSURE
Figure 96.123 Compressor Installed in Holding
Fixture
6. Unscrew and discard four lock nuts from rear of
compressor, and lift off rear head by tapping it with
a mallet. If Teflon sealing surface is damaged (see
Figure
9B-124), replace rear head. Clean or replace
suction screen as necessary.
7. Pencil mark top side of both oil pump rotors and
lift out rotors. Replace both oil pump inner and outer
rotors if one or both are damaged or worn.

9B-70 1973 OPEL SERVICE MANUAL
SUCTION
SCREENTEFLON Iut 98-98
Figure 96-l 24 Rear Head Removal
8. Take out and discard shell to head
“0” ring.
9. Carefully pry out rear discharge valve plate and
rear suction valve reed disc with screwdrivers (seeFigures 9B-125 and
9B-126). Check both pieces and
replace as necessary.During disassembly, the disc generally adheres to the
plate and both pieces lift out together.
Figure 96-l 25 Removing Rear Discharge Valve Plate
Removing Cylinder Assembly, and Disassembly of
Front Suction Valve Reed Disc, Front Discharge
Valve Plate, and Front Head1. Pull out oil inlet tube (see Figure 9B-127) and oil
inlet tube
“0” ring using Remover (J-6586).Figure 96-l 26 Removing Rear
SfJction Valve ReedDiscFigure 98-127 Removing Oil Inlet Tube
2. Push shaft upward from front head and lift out
cylinder assembly (see Figure 9B-128), front suction
valve reed disc, and front discharge valve plate.
When lifting out the cylinder assembly, the front
suction valve reed disc and the front discharge valve
plate generally adhere to the cylinder assembly and
lift out with it. Check and replace if necessary.
Depending on wear or damage to cylinder assembly,
it may be advisable to replace complete cylinder as-
sembly. If service replacement cylinder is used omit
following steps and continue on with subparagraph
entitled “FINAL REASSEMBLY OF CYLINDER
ASSEMBLY”.
3. Disassemble front head from shell by tapping
front head with a mallet to unseat head, and lifting
straight out through rear of shell the front head and
shell to head
“0” ring (see Figure 9B-130). Discard
“0” ring.