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ENGINE
MECHANICAL AND MOUNTS
15
New inlet valves must not be refaced or lapped with
grinding compound. The correct angle for the intake
and exhaust valve head is 44 degrees.
10. Install cylinder head.
11. Adjust valve clearance. See MAINTENANCE
AND ADJUSTMENTS.
7. Inspect valve guides. Worn or pitted guides can be
reamed to accept valves with oversize stems. Over-
size valves are occasionally used in production.
Oversize valves are marked 1 “2” or “A” and are
stamped into the valve stem end and also stamped
near spark plug hole. See Figure
Replacing Rocker Arm Studs
1. When replacing rocker arm studs become
remove air cleaner, rocker arm cover and
rocker arm.
8. Reseat valve seats in cylinder head in the following
sequence:
Intake
NOTE:
The rocker arm studs are screwed into the
cylinder head. A tapered part of the stem serves to
a void stud loosening.
With 45 degrees cutter, remove burnt structure until
a metallic bright seat is obtained. Lightly coat valve
head with red lead, insert it into guide and turn it
under light pressure several times back and forth.
Thereby a contact pattern is obtained and the seat
width can be measured. If valve does not seat per-
fectly all around, lightly recut valve seat to the estab-
lished seat width of
with 30 degrees
correction cutter.
Exhaust
The directions for reconditioning intake valve seats
apply in principle also to exhaust valve seat recondi-
tioning with the exception that the valve seat width
should be
in. and different cutters are em-
ployed.
NOTE:
n e w
whenever
valves are reconditioned.
9. Lube valves with engine oil and reinstall valves,
valve springs, caps and cap retainers using J-8062.
Install valve spring with closely wound coils toward
cylinder head. See Figure
2. Attach vise grip pliers to stud being removed and
remove from cylinder head.
3. Screw in new stud. Seat tapered part of stud by
striking stud end with a rubber hammer.
4. Place two turned down rocker arm nuts on
threaded part of stud.
5. Torque stud into cylinder head to 29
Valve Lifter Service
The valve lifters can be removed after removing
rocker arm cover and
rocker arms.
No oversize lifters have been released due to the
insignificant wear of the valve lifters and cylinder
head guides.
Amply oil respective parts and install in reverse se-
quence to removal.
Carry out hydraulic valve lifter adjustment as ou-
tlined in MAINTENANCE AND ADJUST-
MENTS.
VALVE
SPRING
C L O S E
WOUND
C O I L S
TOWARD
HEAD
Figure
Valve Spring
CONNECTING ROD BEARINGS
A connecting rod bearing consists of two halves or
shells which are alike and interchangeable in rod and
cap. When the shells are placed in rod and cap the
ends extend slightly beyond the parting surfaces so
that when rod bolts are tightened the shells will be
clamped tightly in place to insure positive seating
and to prevent turning.
of shells must never
be tiled flush with parting surface of rod or cap.
If a precision type connecting rod bearing becomes
noisy or is worn so that clearance on
is
excessive, a new bearing of proper size must be se-
lected and installed since no provision is made for
adjustment. Under no circumstances
should the con-
necting rod or cap be filed to adjust the bearing
clearance.
Summary of Contents for 1900 1973
Page 1: ......
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Page 9: ......
Page 48: ...IGNITION SYSTEM lC 27 9 3OlC19 Figure 1 C l 3 Distributor Exploded...
Page 57: ...I I 1 D 36 1973 OPEL SERVICE MANUAL I Figure 1 D 27 Alternator Exploded View 301D27...
Page 95: ...j 1J 74 1973 OPEL SERVICE MANUAL i I m Figure 13 1 Windshield Wiper and Horn Opel 1900 Manta...
Page 96: ...I I WIRING DIAGRAMS lJ 75 Figure lJ 2 Windshield Wiper and Horn Rallye...
Page 97: ...1 J 76 1973 OPEL SERVICE IMANUAL L J Figure lJ 3 Wind hield Wiper and Horn Gl...
Page 98: ...I I I WIRING DIAGRAMS 1J 77 I I Figure 1 J 4 Turn Signal and Hazard Flasher Opel 1900 Manta I...
Page 99: ...I i L I lJ 78 1873 OPEL SERVICE MANUAL Figure lJ 5 Turn Signal and Hazard Flasher GT...
Page 100: ...I WIRING DIAGRAMS 15 79 I I Figure lJ 6 Oil Fuel Temp Tach Stop and Brake Warning Light GT I...
Page 101: ......
Page 102: ...I WIRING DIAGRAMS lJ 81 r Figure 1 J 8 Blower and Lighter GT...
Page 103: ...I I lJ 82 1973 OPEL SERVICE MANUAL Figure lJ 9 indicator Lights and Gauges Opel 1900 Manta...
Page 104: ...I I WIRING DIAGRAMS IJ 83 I Figure 1 J 10 Indicator Lights and Gauges Ratlye...
Page 106: ...EhMB SWITCH R GHiDOOR 301J12...
Page 107: ...1 J 86 1973 OPEL SERVICE MANUAL i Figure 1 J l 3 Headlamps Opel 1900...
Page 108: ...I I I WIRING DIAGRAMS lJ 87 Figure lJ 14 Headlamps Manta...
Page 109: ...1 J 88 1973 OPEL SERVICE MANUAL I 1 Figure lJ 15 Headlamp and Fog Lights Rallye...
Page 110: ...301516...
Page 111: ......
Page 113: ...1 J 92 1973 OPEL SERVICE MANUAL d 5 Figure 1 19 Starting lgniiion and Charging Opel 1900 Manta...
Page 114: ...I I WIRING DIAGRAMS lJ 93 I Figure lJ 20 Starting Ignition and Charging GT...
Page 115: ...1 J 94 1973 OPEL SERVICE MANUAL i I I Figure lJ 21 Instrument Panel GT...
Page 116: ...I I 1 I WIRING DIAGRAMS lJ 95 Figure lJ 22 A C Generator and Regulator All Models...
Page 117: ...301523...
Page 119: ...I I I 10 RED AMP GAGE 301J25...
Page 120: ...WIRING DIAGRAMS lJ 99 Figure lJ 26 Seat Belt Warning System Automatic Transmissionl GT...
Page 121: ...lJ 100 1973 OPEL SERVICES MANUAL I Figure 1 J 27 Heated Rear Glass Opel 1900 Manta...
Page 122: ...I WIRING DIAGRAMS 1 J 101...
Page 123: ...1 J 102 1973 OPEL 9ER IC MANUAL...
Page 128: ...SPECIAL BODY TOOLS GENERAL INFORMATION 2A 5 W REGULATOR INING INSTALLER J 21828 J 21549 2A 1...
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Page 231: ......
Page 259: ......
Page 285: ...5C 26 1973 OPEL SERVICE MANUAL...
Page 322: ...ENGINE MECHANICAL AND MOUNTS 6A 31...
Page 350: ...CARBURETOR AND THROTTLE LINKAGE 6E 59 Figure 6E 37 Carburetor Specifications...
Page 361: ......
Page 372: ...Figure 7A 9 Exploded View of Clutch Pedal and Housing...
Page 423: ...Third Clutch Applied Low Band Released...
Page 424: ...AUTOMATIC TRANSMISSION C 63...
Page 425: ...712 64 1973 OPEL SERVICE MANUAL HYDRAULIC OPERATION I r n...
Page 427: ...7C 66 1973 OPEL SERVICE MANUAL...
Page 428: ......
Page 429: ...7C 68 1973 OPEL SERVICE MANUAL II II I...
Page 431: ...7C 70 1973 OPEL SERVICE MANUAL d...
Page 433: ...7C 72 1973 OPEL SERVICE MANUAL...
Page 435: ...7C 74 1973 OPEL SERVICE MANUAL...
Page 437: ...712 76 1973 OPEL SERVICE MANUAL...
Page 439: ...a 1973 OPEL SERVICE MANUAL...
Page 441: ...7C 80 1973 OPEL SERVICE MANUAL...
Page 499: ...7C 138 1973 OPEL SERVICE MANUAL 4 5 I Figure 7C 234 Special Tools Automatic Transmission 7C223...
Page 509: ......
Page 596: ...98 88 1973 OPEL SERVICE MANUAL Figure gB 165 Special Tools...
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