gear OPEL MANTA 1973 Service Manual

7C-1021973 OPEL SERVICE MANUAL
Figure 7C-120Figure 7C-122
Figure 7C-12 1
2. Remove modulator valve and sleeve from trans-
mission case.
Removal of Detent Valve Assembly
This operation can be performed with transmission
in vehicle
1. Remove spring pin by pulling upward with pliers.
2. Lightly tap detent valve assembly from front of
case and remove detent valve, sleeve, spring, and
spring seat from rear of easel See Figure 7C-122,Removal of Extension Housing
This operation can be performed with transmission
in vehicle
1. Remove bolt holding speedometer driven gear
housing retainer and carefully remove retainer and
pull speedometer driven gear assembly from exten-
sion housing. See Figure
7C-123.Figure
7C- 123
2. Remove the seven attaching bolts from extension
housing to case.

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

7C-1041973 OPEL SERVICE MANUAL
bolts which are the outer bolts in the housing. See
Figure 7C-129.
Figure 7C-129
3. Remove converter housing with oil pump, reverseand second clutch assemblies. Do not lose selective
thrust washer. See Figure
7C-130. Second clutch as-
sembly may remain in case. If so, remove with re-
verse clutch plates.
Figure 7C-130
4. Remove reverse clutch plates from transmission
case, See Figure
7C-131.
T%RSE~L~~T~H PLATES
7c-131
Figure
7C-13 I
Removal of Third Clutch Assembly. Planetary
Carrier Assembly, Reaction Sun Gear and Drum
Assembly and Low Band1. Remove third clutch assembly. See Figure 7C-
132.
Figure 7C-132
2. Remove planetary carrier and output shaft by slid-
ing out through front of case. See Figure
7C-133.Care should be taken not to lose the needle thrust
bearing and race in the planetary carrier assembly.
3. Remove reaction sun gear and drum with needle

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-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.

7C-1141973 OPEL SERVICE MANUAL
4. Cracking
5. Charring
6. Chips or metal particles imbedded in lining
If a composition drive plates 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 scufftng is in-
dicated, the plates must be replaced.
23. Install second clutch plates into second clutch
drum with cushion plate (wave washer) first, then
steel plate, composition plate, steel plate, etc. Use
liberal amount of transmission fluid. See Figure 7C-
166.
-I
DRUM
7c-167Figure 7C-167
Disassembly, Inspection and Reassembly of Third
Clutch1. Compress third clutch sprag race and retainer
assembly retaining ring, and remove assembly from
third clutch drum. See Figure
7C-168. Third clutch
hub and input sun gear assembly will be removed at
the same time.
Figure 7C-16624. Install second clutch spacer plate into second
clutch drum. If necessary, expand spacer plate with
screw driver until ends of spacer are evenly butted
together seating tightly into drum. See Figure 7C-
159.
25. Install second clutch spacer retaining ring
26. Install ring gear into second clutch drum.
Figure 7C-168
27. Install ring gear retaining ring.
28. Air check second clutch assembly. See Figure7C- 167.2. Remove input sprag race and retainer assembly
from third clutch hub and input sun gear assembly.
See Figure
7C-169.

AUTOMATIC TRANSMISSION 7C-115INPUT SPRAG RACE
8 RETAINER ASSEMBLY/
GEAR
CLUTCH HUBFigure
7C-1693. Push sprag assembly and retaining rings from
sprag race and retainer. See Figure
7C-170.Figure
7C.17 I7. Remove snap ring using snap ring pliers such as
J- 8059. See Figure 7C-172.SPRAG RACE
-AND RETAINER
,, SPRAG ASSEMBLY
\Figure
7C-1704. Remove third clutch plates from third clutch
drum. See Figure
7C-171. The plates should be kept
in the same sequence as they were installed in the
clutch.
5. Remove input shaft thrust washer and needle
thrust bearing. See Figure
7C-171.6. Using compressor tool J-23075 on third clutch
piston retaining seat, compress third clutch piston
return springs using arbor press.Figure 7C.172
8. Remove the retaining seat and 12 return springs.
9. Remove third clutch piston from third clutch
drum. See Figure
7C-174.
10. Inspect third clutch piston return springs. have
caused the springs to take a heat set and would jus-
tify replacement of the springs.
11. Inspect check ball in third clutch piston. If ball
is missing or falls out upon inspection or piston is

AUTOMATIC TRANSMISSION 7C-117WIRE CRIMPED
INTO COPPERTUBING
Figure 7C-178
19. Inspect condition of the third clutch composition
and steel plates. Do not diagnose a composition
drive plate by color,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
scutXng is in-
dicated, the plates must be replaced.
20. Install third clutch plates into third clutch drum
beginning with a steel plate, composition plate, steel
plate, composition plate, etc. Use a liberal amount of
transmission fluid.
21. Inspect thrust washer and needle thrust bearing
for damage. Replace if necessary.
22. Install thrust washer and bearing onto input
shaft. Secure with petroleum jelly (unmedicated).23. Inspect sprag assembly for wear, damage orsprags that freely fall out of cage. Inspect input sun
gear for chipped or nicked teeth or abnormal wear.
Replace part if necessary.
24. Install sprag onto third clutch hub with groove
on sprag cage outer diameter toward input sun gear.
See Figure
7C-179.Figure 7C-179
25. Install sprag race and retainer assembly over
sprag assembly. Holding input sun gear with left
hand, sprag race and retainer assembly should “lock
up” when turned with right hand in a clockwise
direction and should rotate freely when turned coun-
terclockwise. See Figure
7C-180.Figure 7C-180

712.1191973 OPEL SERVICE MANUAL
26. Align third clutch composition plates and install
third clutch hub to index with the third clutch platesplines. Input sprag, race, and retainer assembly
must also spline into third clutch drum. See Figure7c-181...-I-AND INPUT SPRAG
Disaseembly, Inspection and Reassembly of
Palentary Carrier1. Inspect the planetary carrier and output shaft for
distortion or damage.
2. Inspect the planetary pinions for excessive wear or
damage, such as chipped teeth.
3. Check the end clearance of all planetary pinions
with feeler gauge at points “A” “B”. Clearance
should be between
,005” and .035”. See Figure 7C-
184.
Figure
7C-18127. Compress retaining ring and seat input sprag
raassembly into third clutch drum.
28. Air check the 3rd clutch piston assembly. See
Figure 7C- 183.
THlRD CLUTCH ASSEMBLY
7C183
Figure 7C-183
Figure 7C-184
4. Replace entire assembly if damage or excessive
wear is noted.
5. Tighten planetary carrier lock plate retaining
screws to 20-35 lbs. in.
Disassembly, Inspection and Reassembly of
Reaction Sun Gear and Drum1. Inspect reaction sun gear for chipped or nicked
teeth and inspect sun gear for scoring. If necessary,
replace entire assembly.
2. Inspect reaction sun gear, drum, and bushing.
3. If necessary to replace bushing, use a chisel such
as tool J-8400-1. Remove bushing from sun gear
drum at bushing joint. See Figure
7C-185.4. Thoroughly clean drum. Install new bushing using
installer tool J-23130-2 with driver handle
J- 8092.
Bushing should be installed flush with rear face of
sun gear drum hub. See Figure
7C-186.

driver and remove secondary valve spring retainer.
See Figure 7C-187.
S,ECONDARY’ VALVE SPRING
/SECONDARY VALVE
REACTIONSUN GEAR
DRUM
#ii
INERFigure 7C-1857G186
Figure 7C-186
Disassembly. Inspection and Reassembly of
Governor Body1. Depress secondary valve spring with small screw
$%OLL PIN
Figure 7C-187
2. Remove secondary valve spring, secondary valve,
primary valve, and roll pin from governor body. See
Figure
7C-188.
1. GOVERNOR SECONDARY VALVE SPRING RETAINER
2. GOVERNOR SECONDARY VALVE SPRING
3. GOVERNOR SECONDARY VALVE
4. GOVERNOR PRIMARY VALVE
5. GOVERNOR BODY7c.1886. ROLL PIN
Figure 7C-188 Governor Body Exploded View
3. Inspect the primary and secondary valve for nicks,
burrs, etc. If necessary, use crocus cloth to remove
small burrs. Do not remove the sharp edges of the
valve since these edges perform a cleaning action
with the valve bore.