PC-122 - TEXTRON LYCOMING - O-320

AVCO
LYCOMING
WILLIAMSPORT
DIVISION
TECHNICAL
PUBLICATION
REVISION
REVISION
No.
PUBLICATION
PUBLICATION
PC-122-1
0-320-H
76 Series
PUBLICATION
No.
April,
PC-122
DATE
1976
The page(s) furnished herewith are intended to replace the corresponding page(s) of the publication indicated above. If additional copies
of the revision are required they may be obtained from Avco Lycoming
Williamsport Division. See latest edition of Service Letter No. L114
for further information on Avco Lycoming service publications.
Previous
None
revisions
to this publication
This
revision
consists
PC-122-1
1-1, 1-3, 1-6, 1-7
2-3, 2-4
of:-
TEXTRON
LycomingAIRCRAFT
ENGINES
0-320-H Series
76 Series
PARTS CATALOG
INTRODUCTION
The
Lycoming 76 series O-320-H model engine depicted herein employs a modern unitized design
crankcase. This incorporates all accessory drives in the crankcase eliminating a separate accessory housing
and providing a compact, lightweight power unit.
The parts catalog is constructed in the same familiar format as previous catalogs, the only difference
being that the accessory drives section is now integrated with the Crankcase Group in Section 1.
An oversize and undersize parts list shows available parts and their sizes.
A Numerical Index is provided for convenience in finding parts when only the part number is known.
Complete coverage of Vendor Accessories used on
Lycoming engines may be secured by referring
to the publications listed in footnotes in this catalog on the page where the accessories are installed. A
complete list of Vendor publications may also be found by referral to Service Letter No. L114.
NOTE
The illustrations, pictures and drawings shown in this publication, are typical of the subject matter they
portray; in no instance are they to be interpreted as examples of any specific engine, equipment or part
thereof.
SERVICE BULLETINS, INSTRUCTIONS AND LETTERS
Although the information contained in this parts catalog is up-to-date at time of publication, users are
urged to keep abreast of later information through
Lycoming Service Bulletins, Instructions and
Service Letters which are available through all
Lycoming Distributors or from the factory by
subscription. Consult the latest edition of Service Letter No. L114 for subscription information.
i
O-320-HSERIES
TABLE OF CONTENTS
SECTION
PAGE
i
Introduction
.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ii
............................
................
Table of Contents
. .iii
List of Available Oversize and Undersize Parts ................................
1 - Crankcase, Crankshaft and Camshaft Group
Crankcase Assembly
.......................................
Crankcase Related Parts .................
Crankshaft, Camshaft and Tachometer Drive
............................
Crankcase Attaching Parts .....................................
Oil Pump and Vacuum Pump Drive
................................
Oil Filter and Fuel Pump Assembly
.................
2 - Cylinder, Piston and Valve Train
Connecting Rod, Piston and Piston Rings ...........
Cylinder Assembly
....................................
Valve Assembly
........................................
...........................
Push Rods, Rocker Arms and Hydraulic Lifters
Cylinder Head Drain Tubes and Intercylinder Baffles ..............
3 - Ignition System
Magneto Drive and Magneto System
.
.........
.
..............
.
..................
.....
............
4-1
.........
......................
5 - Oil Sump and Induction System
.................................
Oil Sump Assembly
.............................
Intake Pipes and Carburetor
5-1
5-2
.......
6 - Service Replacement Section
Seal and Gasket Set ..............................
Cylinder, Piston and Ring Kit ................
2-1
2-2
. 2-3
. 2-4
2-5
3-1
.................................
4 - Electrical System
Alternator Bracket and Starting Motor
7 - Numerical Index
1-1
1-2
1-3
1-4
1-5
1-6
.......
........
..................
..
. 6-1
6-2
7-1
..........................................
ii
O-320-H SERIES
AIRCRAFT ENGINES
LISTING OF PROCURABLE OVERSIZE AND UNDERSIZE PARTS
OVERSIZE
PARTNO.
P2
P3
P5
P6
P7
P10
P11
P12
P15
P20
UNDERSIZE
P22
P30
P33
61662
66145
X
66796
X
P75
P125
M3
M6
M10
X
X
X
X
X
X
X
72057
X
X
X
X
72058
X
X
X
X
72063
X
X
X
72065
X
X
X
76943
X
X
X
77160
X
X
X
LW-14105
NOTE I
Studs are available in P3, P7 and P12. Pistons and piston rings are available in P10 and P20.
NOTE 2
Wben ordering oversize or undersize parts, be sure and specify the required oversize or undersize dimensions, along with the
proper part number. For example: to order bushing P/N 72063 in .010 inch oversize, order P/N 72063 P10. To order bearing
P/N 61662 in .003 inch undersize, order P/N 61662 M3. Code letter P stands of oversize, while code letter M means
undersize.
iii
LYCOMING
0-320-1-1 76 SERIES PARTS CATALOG
CRANKCASE,CRANKSHAFTAND CAMSHAFT GROUP
CRANKCASE ASSEMBLY
1
2
3
4
5
6
7
LW-16819
LW-15045
LW-15276
LW-15277
50-15
38-13
STD-557
8
9
10
11
12
13
31C-12
31C-13
1102
STD-1339
25C-9
1102
QUANTITY PER ASSEMBLY
ON
FIG.
PART
REF. NUMBER
1
DESCRIPTION
ALL
1
1
CRANKCASEASSEMBLY
BUSHING, Magneto drive
STUD, 1/2-20 x 10-23/32 long
STUD, 1/2-13 x 8-3/4 long
STUD, 1/2-20 x 1-7/8 long
STUD, 3/8-16 x 1-5/8 long
DOWEL, 25/64 ID x 1/2 OD x 11/16
hollow
STUD, 5/16-18 x 1-1/2 long
STUD, 5/16-18 x 1-5/8 long
PLUG, 1/8-27 NPT
PLUG, 1/16-27 NPT
STUD, 1/4-20 x 1-1/8 long
PLUG, 1/8-27 NPT, Allen head
2
4
8
16
3
8
1
2
1
2
1
6
II
10
5
8
Figure 1
1980
December,
Revised
1-1
76 SERIES 0-320-H PARTS CATALOG
LYCOMIING
CRANKCASE, CRANKSHAFT AND CAMSHAFT GROUP
CRANKCASE RELATED PARTS
FIG.
REF.
2
PART
NUMBER
1
2
3
LW-14105
LW-13792
72075
4
72091
5
6
1028-B
68668
7
8
9
STD-425
STD-1045
76529
10
11
12
13
14
15
16
17
18
LW-13290
LW-13291
STD-33
STD-678
LW-38-2.75
70457
75675
LW-14784
72220
QUANTITY
ON
DESCRIPTION
8
1
BEARING, Crankshaft
SEAL, Crankshaftoil
RING, Oil seal,7/16 ID x 3/32
section
RING, Oil seal,3/8 ID x 7/64
section
BALL, 11/16 dia.
SPRING,Oil press.reliefvalve
WASHER,No.10 plain (max.9)
GASKET, 1-1/4 ID x 1-1/2 OD x 3/32
32
PLUG, Oil relief valve
BRACKET, Enginemounting,upper
BRACKET,Enginemounting,lower
WASHER,3/8 plain
WASHER,3/8 lock
BOLT, 3/8-16 x 2-3/4 long,hex.hd.
GASKET,Oil filler extension
EXTENSION,Oil filler
GAGE ASSY., Oil level
GASKET, Oil level gage
7
2
1
1
un
1
1
2
2
8
8
8
1
1
1
1
NOTE
Alternate spring,oil pressurerelief
valve P/N's 77467,61084.Select
for
desiredoil pressure.
16
18
PER ASSEMBLY
15
3
4
9
7
Figure 2
1-2
LYCOMING
0-320-H
76 SERIES PARTS CATALOG
CRANKCASE, CRANKSHAFT AND CAMSHAFT GROUP
CRANKSHAFT, CAMSHAFT AND TACHOMETER DRIVE
FIG.
QUANTITYPERASSEMBLY
ON
PART
REF. NUMBER
DESCRIPTION
ALL
\\\\\\\\\\\\\\\\
3
1
2
3
4
5
6
7
8
9
10
LW-15948
STD-1211
LW-15944
72065
72063
STD-2196
LW-15949
LW-15950
STD-2155
LW-16512
11
STD-1066
12
13
14
15
16
17
18
LW-15032
STD-2169
LW-15031
72078
STD-703
LW-16573
LW-16575
19
20
21
22
STD-8
STD-160
STD-1411
76628
LW-16843
72566
LW-15379
23
24
CRANKSHAFT ASSEMBLY
PLUG, 2.00 dia. expansion
CRANKSHAFT. Sub-assembly
BUSHING, Propeller.flange
BUSHING, Propeller flange
DOWEL, 5/16 dia. x 51/64 long
GEAR, Crankshaft
LOCKPLATE, Crankshaft gear
SCREW, 1/4-28 x 27/32 long
CAMSHAFT, GEAR & TACHOMETERSHAFT
ASSY.
DOWEL, Stepped, 5/16 & 1/4 dia. x
13/32 long
SHAFT ASSEMBLY, Tachometer
ROLLPIN, 3/16 dia. x 1-1/8 long
GEAR. Camshaft
LOCKPLATE, 5/16 bolt x 1-21/64 spacing
BOLT, 5/16-24 x 37/64 long, hex. hd.
GASKET, Tachometer adapter
TACHOMETERADAPTER & SEAL
ASSEMBLY
WASHER, 1/4 plain
WASHER, 1/4 lock
NUT, 1/4-20
SUPPORTASSEMBLY, Starter ring gear
SUPPORTASSEMBLY, Starter ring gear
GEAR, Starter ring, 12/14 pitch
BAFFLE, Breather
Figure 3
Revised
December,
1980
1-3
1
1
1
1
5
1
1
1
2
1
1
1
1
1
2
4
1
1
2
2
2
1
1
1
1
76
LYCOMING
CRANKCASE,
SERIES 0-320-H PARTS CATALOG
CRANKSHAFT
AND CAMSHAFT
GROUP
CRANKCASE ATTACHING PARTS
FIG.
REF.
4
1
2
3
4
5
6
7
8
9
10
11
12
13
PART
NUMBER
QUANTITY PER ASSEMBLY
ON
DESCRIPTION
\\\\\\\\\\\\\\\\\
AN6-36A
STD-33
STD-678
STD-596
STD-1215
STD-2103
STD-8
STD-160
STD-395
STD-8
LW-15063
STD-2047
STD-160
BOLT, 3/8-24 x 3-13/16 long,hex.hd.
WASHER,3/8 plain
WASHER,3/8 internal lock
NUT, 3/8-24 plain
BOLT, 1/4-20 x 1-1/4 long,hex.hd.
BOLT, 1/4-20 x 3-3/8 long,hex.hd.
WASHER,1/4 plain
WASHER,1/4 internal lock
BOLT, 1/4-20 x 1-1/4 hex.hd.,dr.hd.
WASHER,1/4 plain
EYE, Lifting
BOLT, 1/4-20 x 1-3/8 long,hex.hd.
WASHER, 1/4 internal lock
2
4
2
2
16
4
20
20
3
3
2
2
2
5,7,8
,7,8
4
I
9 10
Figure 4
1-4
LYCOMING
76
SERIES 0-320-H PARTS CATALOG
CRANKCASE, CRANKSHAFT AND CAMSHAFT
OIL PUMP AND VACUUM PUMP DRIVE
FIG.
REF
5
PART
NUMBER
5
6
7
8
LW-15345
STD-2057
LW-15263
STD-1063
LW-15262
LW-15068
LW-15347
LW-15070
9
LW-15143
10
11
25C-12
STD-557
12
13
66145
STD-208
14
15
16
17
18
19
20
21
STD-35
STD-475
STD-1410
8313
60430
STD-8
STD-160
STD-1411
1
2
3
4
DESCRIPTION
SHAFT, Oil and vacuumpump drive
KEY, 5/8 dia.x 5/32 Woodruff
GEAR, Oil pump drive
NUT, 9/16-18 x 9/32 high
LOCKPLATE,Oil pump gear
IMPELLER ASSY., Oil pump driven
IMPELLER, Oil pump driving
SEAL, "O" ring 3-1/2 ID x 7/64
sect.
BODY ASSY., Oil pump and vacuum
pump drive
STUD, 1/4-20 x 1-1/2 long
DOWEL,25/64 ID x 1/2 OD x 11/
hollow
DOWEL, 1/4 dia.x 1/2 long
OIL SEAL, 7/8 ID x 1-1/2 OD x 5/
wide
WASHER,5/16 plain
WASHER,5/16 internal lock
NUT, 5/16 plain
GASKET,Vacuum pump
COVER, Vacuumpump
WASHER,1/4 plain
WASHER,1/4 internal lock
NUT, 1/4-20 plain
GROUP
QUANTITY PER ASSEMBLY
ON
\\\\\\\\\\\\\\\\\\\\\\\
1
1
1
1
1
1
1
1
1
1
4
4
4
1
1
4
4
I
2
13
8
5
3
Figure 5
1-5
Intentionally
Left Blank
LYCOMING
0-320-1-1 76 SERIESPARTS CATALOG
CRANKCASE,CRANKSHAFTAND CAMSHAFT GROUP
OIL FILTERAND FUEL PUMP ASSEMBLY
QUANTITYPERASSEMBLY
ON
PART
FIG.
REF. NUMBER
DESCRIPTION
ALL
6
1
2
3
4
5
6
LW-15046
LW-16118
LW-15047
LW-15163
LW-15167
MS124703
7
8
MS29512-8
LW-10637
9
LW-14685
10
11
12
13
LW-13904
LW-13905
LW-13906
STD-294
14
75944
15
16
17
18
19
20
69436
62415
62417
62817
LW-13224
MS20822-8
21
MS20823-8
22
23
24
61173
68974
STD-8
STD-8
STD-160
LW-25-3.00
STD-1646
25C-10
25C-18
25C-12
STD-1411
STD-1411
AN840-12D
AN844-12D
60096
LW-15399
STD-33
STD-1882
25
26
27
28
29
30
31
32
33
1
1
GASKET, Oil filter adapter
OIL FILTER ADAPTER& FITTING ASSY.
OIL FILTERADAPTER ASSY.
OIL FILTERADAPTER
BYPASS VALVE ASSY., Oil filter
INSERT, Heli-coil, 3/4-16 NF-3
x 1-1/4 long
SEAL, Oil 21/32 OD x 3/32 sect.
ELBOW, 1/2 tube x 3/4-16 thd.,
90 ° adj. (inlet)
ELBOW, 1/2 tube x 3/4-16 thd.,
45 ° adj. (outlet)
KIT, Converter plate, oil filter
FILTERASSY., Oil, long (Champion)
FILTERASSY., Oil, short
GASKET, 7/8 OD x 5/8 ID x
3/32 annular
VALVE ASSY., Temp. control,
oil cooler bypass
SPRING,Oil cooler bypass
PLUNGER,Oil cooler bypass
PLUG, Oil cooler bypass
SCREENASSY., Oil pressure
ADAPTER, Oil cooler
ELBOW, 1/2 tube x 3/8 pipe,
90 ° (inlet)
ELBOW, 1/2 tube x 3/8 pipe,
45 ° (outlet)
GASKET, Oil pressure housing
HOUSING, Oil pressure screen
WASHER, 1/4 plain
WASHER, 1/4 plain
WASHER, 1/4 internal lock
BOLT, 1/4-20 x 3.00 long, hex hd.
BOLT, 1/4-20 x 2.00 long, hex hd.
STUD, 1/4-20 x 1-1/4 long
STUD, 1/4-20 x 2-1/4 long
STUD, 1/4-20 x 1-1/2 long
NUT, 1/4-20 plain
NUT, 1/4-20 plain
FITTING, Breather
FITTING, Breather, 45°
GASKET, Fuel pump
FUEL PUMP, Dual diaphragm
WASHER, 3/8 plain
SCREW, 3/8-16 x 1-9/32 long,
socket hd., dr. hd.
1980
RevisedDecember,
1
1
1
1
1
1
1
1
1
1
1
1
11
1
2
1
3
1
1
1
4
12
4
1
2
3
2
3
3
2
1
1
1
2
1-6
31
0
m
LYCOMING
76
SERIES 0-320-H PARTS CATALOG
CYLINDER, PISTON AND VALVE TRAIN
CONNECTING ROD, PISTON AND PISTON RINGS
FIG.
REF.
7
1
2
3
4
5
6
7
8
9
10
PART
NUMBER
78030
LW-13923
78027
LW-12186
61662
LW-15357
LW-14078
60828
74241
73857
QUANTITY PER ASSEMBLY
ON
DESCRIPTION
4\\\\\\
4
8
8
8
4
4
8
8
4
ROD ASSEMBLY,Connecting
BUSHING,Connectingrod,upper
BOLT, Connectingrod
NUT, Connectingrod
BEARING, Connectingrod
PISTON,Compressionratio 9.0:1
PIN, Piston
PLUG, Piston
RING, Piston compression
RING, Piston oil regulating
4
3
6
8
Figure 7
2-1
10
LYCOMING
76 SERIES 0-320-H PARTS CATALOG
CYLINDER, PISTON AND VALVE TRAIN
CYLINDER ASSEMBLY
FIG.
REF.
8
PART
NUMBER
1
LW-15318
2
3
4
5
6
7
8
9
10
11
12
72057
72058
76943
77160
66796
STD-1872
61261
68510
LW-15360
31-16
1102*
QUANTITY
ON
DESCRIPTION
CYLINDER AND HEAD ASSY.,
Nitrided
SEAT, Intake valve
SEAT, Exhaustvalve
GUIDE, Valve intake
GUIDE, Valve exhaust
INSERT, Spark plug 18-1-1/2mm
INSERT, 1/8-27 heli-coil
STUD, 5/16-18 x 1-1/2 long
STUD, 5/16-18 x 1-1/16 long
ELBOW, 1/4-18 x 1/2 tube,45°
STUD, 5/16-18 x 2.00 long
PLUG, 1/8-27 NPT
4
4
4
4
4
8
8
8
4
4
8
un
* - 1102 plugs are used as necessarywhen primersor fuel injection nozzlesare not used.
3
2
Figure 8
2-2
PER ASSEMBLY
LYCOMING
0-320-1-1 76 SERIESPARTS CATALOG
CYLINDER, PISTON AND VALVE TRAIN
VALVE ASSEMBLY
FIG.
PART
REF NUMBER
DESCRIPTION
QUANTITYPERASSEMBLY
ON
ALL
9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
LW-15314
74541
LW-11795
LW-11800
65441
LW-13323
LW-10077
LW-16475
60009
MS13997-3
LW-15316
LW-16055
LW-14995
LW-12272
STD-1411
LW-R-0.750-275
70310
VALVE, Intake
VALVE, Exhaust (rotator type)
SPRING, Valve, inner
SPRING, Valve, outer
SEAT, Valve spring, lower, intake
SEAT, Valve spring, lower, exhaust
SEAT, Valve spring, upper, intake
SEAT, Valve spring, upper, exhaust
(rotator type)
KEY, Valve, intake
KEY, Valve, exhaust (rotator type)
CAP, Valve, exhaust (rotator type)
TUBE, Push rod shroud
SPRING, Shroud tube
LOCKPLATE, Shroud tube
NUT, 1/4-20 plain
SEAL, Shroud tube
SEAL, Shroud tube
ALL
4
4
8
8
4
4
4
4
8
8
4
8
4
4
4
8
8
16
17
Figure 9
Revised
December,
1980
2-3
LYCOMING
0-320-1-1 76 SERIES PARTS CATALOG
CYLINDER, PISTON AND VALVE TRAIN
PUSH RODS, ROCKER ARMS AND HYDRAULIC LIFTERS
FIG.
PART
REF. NUMBER
QUANTITYPERASSEMBLY
ON
DESCRIPTION
ALL
10
1
LW-15315
ROD ASSEMBLY,
2
3
LW-15407
LW-15014
SEAT, Valve rocker arm - fulcrum
ARM, Valve rocker
4
LW-15709
WASHER, 21/64
5
6
MS21045-5
75906
NUT, 5/16-14 self-locking
GASKET, Rocker box cover
7
8
LW-15330
STD-1925
COVER, Rocker box
SCREW, 1/4-20 x 5/8 long, pan. hd.,
self-locking
RING, Oil seal, 3/32 dia. x 4-27/32 ID
9
10
71481
383-B
11
12
STD-2090
LW-16812
NUT, 3/8-24
NUT, 1/2-20
8
8
8
Push
ID x 1/64 thick
un
8
4
4
24
4
16
16
8
plain
plain
LIFTER, Hydraulic
12
-5
6
2
8
Figure 10
2-4
Revised
December,
1980
LYCOMING
76
SERIES 0-320-H PARTS CATALOG
CYLINDER, PISTON AND VALVE TRAIN
CYLINDER HEAD DRAIN TUBES AND INTERCYLINDER BAFFLES
FIG.
REF.
11
PART
NUMBER
1
2
3
LW-15359
LW-15358
STD-2117
4
5
6
LW-15361
LW-15362
LW-14680
7
8
9
10
72569
71611
71610
65321
DESCRIPTION
DESCRIPTION
NIPPLE,1/4-18x 1/2 ID hose
HOSE, 1/2ID x 1-7/8long
CLAMP,Hose9/16 to 1-1/16x 1/2
wide
TIJBEASSY.,Cyl.hd.drain,cyl.no.1.
TUBEASSY.,Cyl.hd.drain,cyl.no.2
TUBEASSY.,Cyl.hd.drain,cyl.no.3
and 4
BAFFLEASSY.,Intercylindler
RETAINER,Intercylinder
HOOK,Intercylinder
baffle retainer
GASKET,Exhaustflange(shiploose)
QUANTITY PER ASSEMBLY
4
4
8
1
1
2
2
2
2
4
7
4,5,6-
Figure 11
2-5
LYCOMING
76 SERIES 0-320-H PARTS CATALOG
IGNITION SYSTEM
MAGNETO DRIVE, MAGNETO SYSTEM AND SPARK PLUG
FIG.
REF.
12
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PART
NUMBER
QUANTITY PER ASSEMBLY
ON
DESCRIPTION
\
LW-15096
LW-15097
68875
LW-12136
LW-12681
GEAR, Magneto
RING, "0",13/16 ID x 5/64 dia.sect.
RETAINER, Magnetodrive cushion
CUSHION,Magnetodrive
GASKET, Magnetoadapter and magneto
LW-385124-115 MAGNETO IGNITION SYSTEM
LW-382555-14
MAGNETO,D4RN-2021(impulse)
LW-384406-303
HARNESS,Ignition
75965
CLAMP, Magneto
STD-475
WASHER,5/16 internal lock
STD-1410
NUT, 5/16-18 plain
LW-14057
CLIP, One wire
LW-14060
CLIP, Two wire
76734
ZIP STRAPS
1182-04
SPARK PLUG, Champion(RHM-38E)
LW-382698
KIT, Magnetoground terminal
\\\
1
1
1
2
1
1
1
1
2
2
2
2
2
13
8
1
See Bendix Service Parts List L-975 for magneto parts breakdown.
6
13
7
NOTE
The abovespark plugs are those used
in current production only; this list
does not include additional spark plugs
that are approvedfor use in these
engines.See
latest edition of Service
Instruction No.1042for complete listing of all approvedspark plugs.
Figure 12
3-1
76 SERIES 0-320-H PARTS CATALOG
LYCOMING
ELECTRICAL SYSTEM
ALTERNATOR BRACKET AND STARTING MOTOR
FIG.
REF
PART
NUMBER
13
1
2
3
LW-15350
STD-1858
LW-13351
4
STD-35
5
8
STD-1858
76908
STD-1858
LW-14207*
9
10
11
12
STD-35
STD-475
STD-2156
STD-1410
6
7
QUANTITY
ON
DESCRIPTION
BRACKET,Alternator
BOLT, 5/16-18 x 29/32 long,dr.hd.
LINK, Alternator adjusting
WASHER,5/16 plain
BOLT, 5/16-18 x 29/32 long,dr.hd.
STRUT, Alternator support
BOLT, 5/16-18 x 29/32 long,dr.hd.
STARTER, 24 volt (3.38:1 int.red.)
(MZ-4218)
WASHER,5/16 plain
WASHER,5/16 internal lock
BOLT, 5/16-18 x 1-5/32 long,hex.hd.
NUT, 5/16-18 plain
PER ASSEMBLY
1
21
1
1
1
1
4
4
1
3
* - SeeSSP1471
for startermotor partsbreakdown.
2
5
7
7
8
Figure 13
4-1
76 SERIES 0-320-H PARTS CATALOG
LYCOMING
OIL SUMP AND INDUCTION
SYSTEM
OIL SUMP ASSEMBLY
FIG.
REF.
14
PART
NUMBER
1
2
3
4
5
6
7
8
9
10
11
LW-15071
LW-14293
68437
STD-8
STD-160
LW-25-5.63
STD-1204
STD-1975
STD-551
61378
STD-1045
12
13
14
61358
61548
STD-1901
14
13
ASSEMBLY
QUANTITY PER ASSEMBLY
ON
DESCRIPTION
GASKET,Oil sump
SUMPASSY.,Oil
STUD, 5/16-18 x 1-7/8
WASHER,1/4 plain
WASHER,1/4 internal lock
BOLT, 1/4-20 x 5-5/8 long,hexhd.
BOLT, 1/4-20 x 15/16 long,hex.hd.
BOLT, 1/4-20 x 2-9/16 long,hex.hd.
PLUG, 1/2-14 NPT sq.hd.,drilled
SCREEN,Oil suction
GASKET, 1-1/4 ID x 1-1/2 OD x 3/32
annular
PLUG, 1-1/4 x 12 hex.hd.
PLATE, Name
DRIVE, Stud,no.4 x 3/16 long
4-5-6
4-5-8
4-
10
12
Figure 14
5-1
1
1
4
14
14
5
7
2
1
1
1
1
1
4
\\\\\\\\\
76
LYCOMING
SERIES 0-320-H PARTS CATALOG
OIL SUMP AND INDUCTION SYSTEM
INTAKE PIPES AND CARBURETOR
FIG.
REF
15
PART
NUMBER
1
2
3
70485
4
STD-1269
5
6
7
8
9
10
11
12
13
14
71973
LW-14555
STD-8
STD-160
STD-1215
66224
LW-13659*
STD-35
STD-1410
STD-1763
LW-14134
AN737TW-82
QUANTITY PER ASSEMBLY
ON
DESCRIPTION
PIPE, Intake
HOSE,Intake pipe
CLAMP, 2-1/8 to 2-9/16 x 9/16
wide
CLAMP, 1-7/8 to 2-1/4 x 9/16
wide
GASKET,2 bolt flange,1-13/16ID
FLANGE, Intake pipe,upper
WASHER,1/4 plain
WASHER,1/4 internal lock
BOLT, 1/4-20 x 1-1/4 long,hex.hd.,
GASKET,Carburetor
CARBURETOR(MS-4SPA)
WASHER,5/16 plain
NUT, 5/16-18 plain
PALNUT
4
4
4
4
8
8
8
1
1
4
4
4
* - See MS609/631for parts breakdownof Marvel-Schebler
carburetors.
1
7
7-8
I
I
12
Figure 15
5-2
LYCOMING
76 SERIES 0-320-H PARTS CATALOG
O-320-H2AD
SERVICE REPLACEMENT SET
SEAL AND GASKET SET
LW-14815
STD-208
STD-294
STD-1045
8313
60096
LW-14260
61173
LW-15280
65321
66224
70310
71481
LW-15070
LW-15262
LW-15046
LW-15109
LW-15071
LW-15097
71973
72053
72075
72078
72091
72312
74065
75906
LW-13792
LW-12272
LW-12681
72220
70457
SEAL AND GASKET SET
SEAL, Oil
GASKET, Annular
GASKET, Annular
GASKET, Vacuum pump
GASKET, Fuel pump
SEAL, Tach shaft
GASKET, Oil press.hsg.
SEAL, Shroud tube
GASKET, Exhaust flange
GASKET, Carburetor
SEAL, Shroud tube
RING, Oil seal
SEAL, "O"-ring
LOCKPLATE, Oil pump gear
GASKET, Oil filter adapter
"O"-Ring
GASKET, Oil sump
"O"-Ring
GASKET, Intake flange
GASKET, Gov. drive
"O"-Ring
LOCKPLATE, Cam gear
"O"-Ring
RING, Oil seal
RING, Oil level gage seal
GASKET, Rocker box cover
SEAL, Crankshaft oil
LOCKPLATE, Shroud tube
GASKET, Mag.
GASKET, Oil filler ext.
GASKET, Oil filler ext.
6-1
1
2
2
2
1
1
1
8
4
2
8
4
1
i
1
1
1
1
4
2
7
2
2
1
1
4
1
4
2
1
1
LYCOMING
76 SERIES 0-320-H PARTS CATALOG
O-320-H2AD
SERVICE REPLACEMENT SET
CYLINDER, PISTON AND RING ASSEMBLY
LW-14814
MS13997-3
MS21045-5
STD-1411
STD-1925
60009
60828
65441
70310
71481
73857
74241
74541
75906
LW-10076
LW-10077
LW-11795
LW-11800
LW-12272
LW-13323
LW-13428
LW-14078
LW-15010
LW-15014
LW-15091
LW-15280
LW-15314
LW-15316
LW-15318
LW-15330
LW-15357
CYLINDER, PISTON AND RING KIT
KEY, Valve exhaust
NUT, Self-locking
NUT, Plain
SCREW, Self-locking
KEY, Valve intake
PLUG, Piston pin
SEAT, Valve spring lower
SEAL, Shroud tube
RING, Oil seal
RING, Piston
RING, Piston compression
VALVE, Exh (rotator type)
GASKET, Rocker box cover
SEAT, Valve spring, upper exhaust
SEAT, Valve spring, upper intake
SPRING, Valve inner
SPRING, Valve outer
LOCKPLATE, Shroud tube
SEAT, Valve spring, lower exhaust
SPRING, Shroud tube
PIN, Piston
SEAT, Valve rocker arm
ROCKER ASSY., Valve
WASHER
SEAL, Shroud tube
VALVE, Intake
CAP, Valve stem, exhaust
CYLINDER ASSY., Nitride
COVER, Rocker box
PISTON
6-2
2
2
1
6
2
2
2
2
1
1
2
1
1
1
1
2
2
1
1
1
1
2
2
6
2
1
1
1
1
1
LYCOMING
76 SERIES 0-320-H PARTS CATALOG
NUMERICAL
PARTNO.
AN6-36A
AN737TW-82
MS9048-224
MS13997-3
MS16624-1087
MS20822-8
MS20823-8
MS21045-5
STD-8
STD-8
STD-8
STD-8
STD-8
STD-33
STD-33
STD-33
STD-35
STD-35
STD-35
STD-160
STD-160
STD-160
STD-160
STD-160
STD-208
STD-294
STD-395
STD-405
STD-425
STD-475
STD-475
STD-475
STD-475
STD-551
STD-557
STD-557
STD-596
STD-678
STD-678
STD-703
STD-1045
STD-1045
STD-1063
STD-1066
STD-1204
STD-1211
STD-1215
STD 1215
STD-1269
STD-1339
PARTNAME
Bolt
Clamp
Roll Pin
Key
Ring
Elbow
Elbow
Nut
Washer
Washer
Washer
Washer
Washer
Washer
Washer
Washer
Washer
Washer
Washer
Washer
Washer
Washer
Washer
Washer
Seal
Gasket
Bolt
Plug
Washer
Washer
Washer
Washer
Washer
Plug
Dowel
Dowel
Nut
Washer
Washer
Bolt
Gasket
Gasket
Nut
Dowel
Bolt
Plug
Bolt
Bolt
Clamp
Plug
PAGENO.
1-4
5-2
1-1
2-3
1-3
1-6
1-6
2-4
1-4
1-5
1-6
5-1
5-2
1-2
1-4
1-6
1-5
4-1
5-2
1-4
1-5
1-6
5-1
5-2
1-5
1-6
1-4
1-1
1-2
1-5
4-1
3-1
5-2
5-1
1-1
1-5
1-4
1-2
1-4
1-3
1-2
5-1
1-5
1-3
5-1
1-3
1-4
5-2
5-2
1-1
INDEX
PARTNO.
STD-1410
STD-1410
STD-1410
STD-1411
STD-1411
STD-1592
STD-1646
STD-1858
STD-1872
STD-1901
STD-1902
STD-1925
STD-1975
STD-2047
STD-2057
STD-2090
STD-2103
STD-2117
STD-2156
STD-2169
25C-10
25C-12
31-16
38-13
50-15
383-B
1028-B
1102
1102
8313
1182-D4
60009
60096
60430
60828
61173
61261
61261
61358
61378
61548
61662
62415
62417
62817
65098
65321
65441
66145
66145
7-1
PARTNAME
Nut
Nut
Nut
Nut
Nut
Bolt
Bolt
Bolt
Insert
DriveStud
Bolt
Screw
Bolt
Bolt
Key
Nut
Bolt
Clamp
Bolt
Roll Pin
Stud
Stud
Stud
Stud
Stud
Nut
Ball
Plug
Plug
Gasket
SparkPlug
Key
Gasket
Gasket
Plug
Gasket
Stud
Stud
Plug
Screen
Nameplate
Bearing
Plunger
Plug
Screen
Cover
Gasket
Seat
Dowel
Dowel
PAGENO.
1-5
4-1
3-1
1-5
2-3
1-6
1-6
4-1
2-2
5-1
5-2
24
5-1
14
1-5
24
14
2-5
4-1
1-3
1-1
1-5
2-2
1-1
1-1
24
1-2
1-1
2-2
1-5
3-1
2-3
1-6
1-5
2-1
1-6
1-1
2-2
5-1
5-1
5-1
2-1
1-6
1-6
1-6
1-6
2-5
2-3
1-3
1-5
LYCOMING
76
SERIES 0-320-H PARTS CATALOG
NUMERICAL INDEX (CONT.)
PARTNO.
66224
66796
67528
68437
68510
68668
68875
68974
69436
70310
70457
70485
71481
71610
71611
71973
72057
72058
72063
72065
72075
72078
72091
72220
72312
72566
72569
73857
74241
74541
75675
75906
75965
76529
76628
76734
76908
76943
77160
78027
78030
LW-25-5.63
LW-38-2.75
LW-10076
LW-10077
LW-11795
LW-11800
LW-12136
LW-12186
LW-12272
PARTNAME
Gasket
Insert
Stud
Stud
Stud
Spring
Retainer
Housing
Spring
Seal
Gasket
Pipe
Seal
Hook
Retainer
Gasket
Seat
Seat
Bushing
Bushing
Seal
Lockplate
Seal
Gasket
O-ring
Gear
Batfle
Ring
Ring
Valve
Extension
Gasket
Clamp
Plug
Support
Zip Strap
Strut
Guide
Guide
Bolt
ConnectingRod
Bolt
Bolt
Seat
Seat
Spring
Spring
Cushion
Nut
Lockplate
PAGENO.
5-2
2-2
1-1
5-1
2-2
1-2
3-1
1-6
1-6
2-3
1-2
5-2
2-4
2-5
2-5
5-2
2-2
2-2
1-3
1-3
1-2
1-3
1-2
1-2
1-3
1-3
2-5
2-1
2-1
2-3
1-2
2-4
3-1
1-2
1-3
3-1
4-1
2-2
2-2
2-1
2-1
5-1
12
2-3
2-3
2-3
2-3
3-1
2-1
2-3
7-2
PARTNO.
LW-12681
LW-13224
LW-13290
LW-13291
LW-13323
LW-13351
LW-13428
LW-13659
LW-13792
LW-13923
LW-14057
LW-14060
LW 14078
LW14105
LW-14134
LW-14207
LW-14260
LW-14293
LW-14555
LW-14658
LW-14659
LW-14680
LW-14784
LW-15010
LW-15014
LW-15031
LW-15032
LW-15045
LW-15046
LW-15063
LW-15068
LW-15070
LW-15071
LW-15091
LW-15098
LW-15087
LW-15143
LW-15168
LW-15260
LW-15261
LW-15262
LW-15263
LW-15269
LW-15276
LW-15277
LW-15280
LW-15281
LW 15314
LW-15315
LW-15316
PARTNAME
Gasket
Adapter
Bracket
Bracket
Seat
Link
Spring
Carburetor
Seal
Bushing
Clip
Clip
Pin
Bearing
Hose
Starter
Seal
SumpAssy.
Flange
Crankshaft
Crankshaft
Assy.
Tube
Gage
Seat
Arm
Gear
Shaft
Bushing
Gasket
Eye
Impeller
Seal
Gasket
Washer
Gear
Ring
Body
Tappet
Retainer
Adapter
Lockplate
Gear
Gear
Stud
Stud
Seal
Tube
Valve
PushRod
Cap
PAGENO.
3-1
1-6
1-2
1-2
2-3
4-1
2-3
5-2
1-2
2-1
3-1
3-1
2-1
1-2
5-2
4-1
1-3
5-1
5-2
1-3
1-3
2-5
1-2
24
2-4
1-3
1-3
1-1
1-6
14
1-5
1-5
5-1
2-4
3-1
3-1
1-5
2-4
1-3
1-3
1-5
1-5
1-3
1-1
1-1
2-3
2-3
2-3
2-4
2-3
LYCOMING
76
SERIES 0-320-H PARTS CATALOG
NUMERICAL INDEX (CONT.)
PARTNO.
LW-15318
LW-15330
LW-15336
LW-15343
LW-15345
LW-15347
LW-15350
LW-15357
LW-15358
PARTNAME
CylinderAssy.
Cover
Camshaft
Crankcase
Shaft
Impeller
Bracket
Piston
Hose
PAGENO.
2-2
PARTNO.
LW-15359
LW-15360
LW-15361
LW-15362
LW-15364
LW-382555-14
LW-382698
LW-384406-303
LW-385124-115
2-4
1-3
1-1
1-5
1-5
4-1
2-1
2-5
7-3
PARTNAME
PAGENO.
Nipple
Elbow
Tube
Tube
Breather
Magneto
Kit, MagnetoTerm.
Harness
Magneto
2-5
2-2
2-5
2-5
1-6
3-1
3-1
3-1
3-1