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A LYCOMING WILLIAMSPORT DIVISION

TECHNICAL PUBLICATION REVISION

The page(s) furnished herewith a re intended t o replace t h e corres- ponding page(s) of the publ ica t ion indica ted above. I f add i t iona l copies of t h e r ev i s ion a re required they may be obtained from Avco Lycoming Williamsport Division. See l a t e s t e d i t i o n of Service L e t t e r No. L114 f o r f u r t h e r information on Avco Lycoming se rv ice publ ica t ions .

REVISION No.

PC-122-1

Prev ious revis ions to th i s publication I Thi s revision cons i s t s of:-

PUBLICATION

0-320-H 7 6 Se r i e s

PUBLICATION No.

PC-122

PUBLICATION DATE

Apri l , 1976

TEXTRON Lycoming AIRCRAFT ENGINES

0-320-H Series 76 Series

PARTS CATALOG

PC-1 22

r d Lycom i ng

652 Oliver Street Williarnsport, PA 17701 U.S.A. 5701323-61 81

Courtesy of Bomar Flying Service www.bomar.biz

INTRODUCTION

The Lycoming 76 series 0-320-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 p u t s 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 Numt!rical 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 illustr~ztions, 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 BULILETINS, 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 o f 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 Sfbrvice Letter No. L114 for subscription information.

0-320-H SE Rl ES

TABLE OF CONTENTS

SECTION PAGE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction i Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii List of Available Oversize and Undersize Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

1 . Crankcase. Crankshaft and Camshaft Group Crankcase Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Crankcase Related Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Crankshaft. Camshaft and Tachometer Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Crankcase Attaching Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 Oil Pump and Vacuum Pump Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 Oil Filter and Fuel Pump Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

2 . Cylinder. Piston and Valve Train Connecting Rod. Piston and Piston Rings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Cylinder Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Valve Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 Push Rods. Rocker Arms and Hydraulic Lifters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Cylinder Head Drain Tubes and Intercylinder Baffles . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

3 . Ignition System Magneto Drive and Magneto System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

4 . Electrical System Alternator Bracket and Starting Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

5 . Oil Sump and Induction System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Oil Sump Assembly 5-1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Intake Pipes and Carburetor 5-2

6 . Service Replacement Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Seal and Gasket Set 6-1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cylinder. Piston and Ring Kit 6-2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 . Numerical Index 7-1

0-320-H SERIES AIRCRAFT ENGINES

LISTING OF PROCURABLE OVERSIZE AND UNDERSIZE PARTS

N O T E 1

PART NO.

61662

66145

66796

72057

72058

72063

72065

76943

771 60

LW-14105

Studs are available in P 3 , P7 and P 1 2 . Pistons and piston rings are available in P I 0 and P 2 0 .

N O T E 2

When 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 7 2 0 6 3 in . 0 1 0 inch oversize, order PIN 7 2 0 6 3 P 1 0 . To order bearing PIN 6 1 6 6 2 in . 0 0 3 inch undersize, order P / N 6 1 6 6 2 M 3 . Code letter P stands of oversize, while code letter M means undersize.

M I 0 P33 M3 P2

UNDERSIZE

M6

X X X

X X X

P6 P75 P3 PI25 P5

X

X

X

X

P7 P I 2 P I 0

X

X

X

X

X

X

X

X

OVERSIZE

PI5 PI1 P20

X

X

X

X

X

X

X

I

P22 P30

X

X

X

X

LYCOMING 0-320-H 76 SERIES PARTS CATALOG

CRANKCASE, CRANKSHAFT AND CAMSHAFT GROUP

CRANKCASE ASSEMBLY

DESCRIPTION

Revised December, 1980

LVCOMING 76 SERIES 0-320-H PARTS CATALOG

CRANKCASE, CRANKSHAFT AND CAMSHAFT GRO!JP CRANKCASE RELATED PARTS

DESCRIPTION

BALL, 11/16 dia. SPRING, Oil press.selief valve WASHER, No.10 plain (max.9) GASKET, 1-114 I D x 1-112 O D x 3 /32 PLUG, Oil relief valve BRACKET, Engine mounting,upper BRACKET, Engine mounting,lower WASHER, 318 plain WASHER, 318 lock BOLT, 3/8-16 x 2-314 long,hex.hd. GASKET, Oil filler extension EXTENSION, Oil filler GAGE ASSY., Oil level GASKET, Oil level gage

Figure 2 4-2



CRANKSHAFT, CAMSHAFT AND TACHOMETER DRIVE

Figure 3

1-3 Revised December, 1980

-. 'JCE-)n..8-


CRANKCASE, CRANKSHAFT AND CAMSHAFT GROUP CRANKCASE ATTACHING PARTS

Figure 4

3 -4

FIG. REF. 4

1 2 3 4 5 6 7 8 9

10 11 12 13

PART NUMBER

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

QUANTITY PER ASSEMBLY DESCRIPTION

BO LT, 3/8-24 x 3-13/16 long,hex.hd. WASHER, 318 plain WASHER, 318 internal lock NUT, 3/8-24 plain BOLT, 1/4-20 x 1-114 long,hex.hd. BOLT, 114-20 x 3-318 long,hex.hd. WASHER, 114 p l a ~ n WASHER, 114 ~n te rna l lock BOLT, 114-20 x 1-114 hex.hd.,dr.hd. WASHER, 114 plain EYE, Lif t ing BOLT, 1/4-20 x 1-318 long,hex.hd. WASHER, 114 internal lock

4 20 20

3 3 2 2 2

LYCOMING 76 SERIES 0-320-H PARTS CATALOG

CRANKCASE, CRANKSHAFT AND CAMSHAFT GROUP OIL PUMP AND VACUUM PUMP DRIVE

Figure 5 1-5

FIG. REF.

5

1 2 3 4 5 6 7 8

9

10 11

12 13

14 15 16 17 18 19 20 21

PART NUMBER

LW-15345 STD-2057 LW-15263 STD-1063 LW-15262 LW-15068 LW-15347 LW-15070

LW-15143

25C-12 STD-557

66145 STD-208

STD-35 STD-475 STD-1410 8313 60430 STD-8 STD-160 STD-1411


SHAFT, Oil and vacuum pump drive KEY, 518 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, "0" ring 3-112 ID x 7/64

sect. BODY ASSY., Oil pump and vacuum

pump drive STUD, 1/4-20 x 1-112 long DOWEL, 25/64 ID x 112 OD x 11/16

hollow DOWEL, 114 d1a.x 112 long

OIL SEAL, 718 ID x 1-112 OD x 5/16 wide

WASHER, 5/16 plain WASHER, 5/16 internal lock NUT, 5/16 plain GASKET, Vacuum pump COVER, Vacuum pump WASHER, 114 plain WASHER, 114 ~nternal lock NUT, 1/4-20 plain

1 1 1 1 1 1 1 ~

1

1 4

1 1

1 4 4 4 1 1 4 4 4

Intentionally Left Blank



OIL FILTER AND FUEL PUMP ASSEMBLY



CYLINDER, PISTON AND VALVE TRAIN CONNECTING ROD. PISTON AND PISTON RINGS

DESCRIPTION

BOLT, Connecting rod N U T , Connecting rod

BEARING, Connecting rod PISTON, Compression ratio 9.0:1

R ING, Piston compression R ING, Piston oil regulating

Figure 7

2- I


CYLINDER, PISTON AND VALVE TRAIN CYLINDER ASSEMBLY

GUIDE, Valve intake GUIDE, Valve exhaust INSERT, Spark plug 18-1-1/2mm INSERT, 1/8-27 heli-coil STUD, 5/16-18 x 1-112 long STUD, 5/16-18 x 1-1/16 long ELBOW, 1/4-18 x 112 tube,45O STUD, 5/16-18 x 2.00 long PLUG, 1/8-27 NPT

* - 1102 plugs are used as necessary when primers or fuel injection nozzles are not used.

Figure 8 2-2


CYLINDER, PISTON AND VALVE TRAIN

VALVE ASSEMBLY

DESCRIPTION


Figure 9

2-3


CYLINDER, PISTON AND VALVE TRAIN

PUSH RODS, ROCKER ARMS AND HYDRAULIC LIFTERS

DESCRIPTION

Figure 40

2-4 Revised December, 1980

LVCoMlNG 76 SERIES 0-320-H PARTS CATALOG

CYLINDER, PISTON AND VALVE TRAIN CYLINDER HEAD DRAIN TUBES AND INTERCYLINDER BAFFLES

1

FIG. PART QUANTITY PER ASSEMBLY REF. NUMBER DESCRIPTION 11

1 LW-15359 _ -- NIPPLE, -1/4-18 x 1/2_ I D hose_-

RETAINER, lntercylinder - - HOOK, Intercylinder baffle ~ t a i n e r _- .- . . -- GASKET, Exhaust flange (ship loose)

Figure 13 2-5


IGNITION SYSTEM MAGNETO DRIVE, MAGNETO SYSTEM AND SPARK PLUG

See Bendix Service Parts List L-975 for maaneto Darts breakdown.

FIG. REF.

12 1 2 3 4 5 6 7 8 9

10 11 12 13 14 15

Figure 12 3- 1

PART NUMBER

LW-15096 LW-15097 68875 LW-12136 LW-12681 LW-385124-115 LW-382555-14 LW-384406-303 75965 STD-475 STD-1410 LW-14057 LW-14060 76734 1182-04 LW-382698


GEAR, Magneto RING, "OrL13/16 ID x 5/64 dia.sect. RETAINER, Magneto drive cushion CUSHION, Magneto drive GASKET, Magneto adapter and magneto MAGNETO IGNITION SYSTEM

MAGNETO, D4RN-2021 (impulse) HARNESS, Ignition

CLAMP, Magneto WASHER, 5116 internal lock NUT, 5/16-18 plain CLIP, One wire CLIP, Two wire ZIP STRAPS SPARK PLUG, Champion (RHM-38E) KIT, Magneto ground terminal

1 1 1 2 1

1 2 2 2 2 2

13 8 1

I


ELECTRICAL SYSTEM ALTERNATOR BRACKET AND STARTING MOTOR

See SSP1471 for starter motor

Figure 13

4- 1

FIG. REF.

13 1 2 3 4 5 6 7 8

9 10 11 STD-2156 BOLT, 5/16-18 x 1-5/32 long,hex.hd. 1

i 12 STD-1410 NUT, 5/16-18 plain 3 I

PART NUMBER

LW-15350 STD-1858 LW-13351 STD-35 STD-1858 76908 STD-1858 LW-14207"

STD-35 STD-475


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:l int.red.1

(MZ-4218) WASHER, 5/16 plain WASHER, 5/16 internal lock 4

2 1 1 1 1 1

1 4

I I


OIL SUMP AND INDUCTION SYSTEM OIL SUMP ASSEMBLY

Figure 14 5-1

FIG. REF.

14 1 2 3 4 5 STD-160 WASHER, 114 internal lock 6 LW-25-5.63 BOLT, 1/4-20 x 5-518 long.hex hd. 1 l4

5 7 STD-1204 BOLT, 1/4-20 x 15116 long,hen.hd. , I I 8 STD-1975 BOLT, 1/4-20 x 2-9/16 long,hex.hd. 1 9 STD-551 PLUG, I/;!-14 NPT sq.hd.,drilled

10 61378 SCREEN, 011 suctic~n 11 STD-1045 GASKET, 1-114 ID x 1-112 OD x 3/32

annular 12 61358 PLUG, 1-114 x 12 hex.hd. 13 61548 PLATE, Name 14 STD-1901 DRIVE, Stud.no.4 x 3/1E long

PART NUMBER

LW-15071 LW-14293 68437 STD-8


GASKET, Oil sump SUMP ASSY., Oil

STUD, 5116.18 x 1-718 WASHER, 114 p l a~n


OIL SUMP AND INDUCTION SYSTEM INTAKE PIPES AND CARBURETOR

- See MS6091631 for parts breakdown of Marvel-Schebler carburetors.

@@

FIG. REF. 15

1 2 3

4

5 6 7 8 9

10 11 12 13 14

Figure 15 5-2

PART NUMBER

70485 LW-14134 AN737TW-82

STD-1269

71973 LW-14555 STD-8 STD-160 STD-1215 66224 LW-13659* STD-35 STD-1410 STD-1763

--


PIPE, Intake HOSE, Intake pipe CLAMP, 2-118 to 2-9/16 x 9/16

wide CLAMP, 1-718 to 2-114 x 9/16

w~de GASKET, 2 bolt flange,l-13/16 ID FLANGE, Intake pipe,upper WASHER, 114 pla~n

1 4 1 1 1 I

WASHER, 114 internal lock 1 ; BOLT, 1/4-20 x 1-114 lony,hex.hd., ' 8 GASKET, Carburetor 1 CARBURETOR (MS4SPA) 1 I 1 WASHER, 5/16 plain NUT, 5/16-18 p la~n PALNUT

4 4 4

LVCOMING 76 SERIES 0-320-H PARTS CATALOG 0-320-H2AD

SERVICE KEPLACEMENT SET

SEAL AND GASKET SET

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, "0"-ring LOCKPLATE, Oil pump gear GASKET, Oil filter adapter "0"-Ring GASKET, Oii sump "0"-Ring GASKET, Intake tlange GASKET, Gov. drive "0"-Ring LOCKPLATE, Cam gear "0"-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.

LVCOMING 76 SERIES 0-320-H PARTS CATALOG 0-320-H2AD

SERVICE REPLACEMENT SET

CYLINDER, PISTON AND RING ASSEMBLY

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 LOC W L A T E , 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

PART NO.

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 STU-1339

LYCOMING

PART NAME

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

SERIES NUMERICAL INDEX

PAGE NO. PART NO.

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 ST 0.2057 STD-2090 STD-2103 STD-2117 STD-2156 STD-2169 25C-10 25C-12 31-16 38-13 50- 15 383-8 1028-6 1102 1102 8313 1 182-04 60009 60096 60430 60828 61 173 61261 6 126 1 61358 61378 61548 61662 62415 62417 6281 7 65098 65321 .

65441 66145 66145

H PARTS CATALOG

PART NAME

N u t Nut N u t N u t N u t Bolt Bolt Bolt Insert Drive Stud Bolt Screw Bolt Bolt Key Nut Bol t Clamp Bolt Roll Pin Stud Stud Stud Stud Stud Nut Ball Plug Plug Gasket Spark Plug Ke Y Gasket Gasket Plug Gasket Stud Stud Plug Screen Nameplate Bearing Plunger Plug Screen Cover Gasket Seat Dowel Dowel

PAGE NO.

PART NO.

LYCOMING

PART N A M E

Gasket Insert Stud Stud Stud Sprlng Retainer Housing Spring Seal Gasket Pipe Seal Hook Reta~ner Gasket Seat Seat Busti i~ig Bushing Seal Lockplate Seal Gasket 0 - r ~ n y Ciear Batfle R ~ n g Ring Valve Exter ls~on Gasket Clamp PI ug Support Z ip Strap Strut Guide Guide Bol t Connecting Rod Bol t Bolt Seat Seat Spring Spr~ng Cushlon Nu t Lockplat;

76 SERIES 0-320-H PARTS CATALOG NUMERICAL INDEX (CONT.)

PAGE NO. PART NO. P A R T N A M E PAGE NO.

LW- 1268 1 LIP/- 13224 LW-13290 LW-13291 LW.13323 LW-13351 LW-13428 LW. 13659 LW-13792 L h - 1 3 9 2 3 LW-14057 LW.14060 L W 1 4 0 7 8 L i t - 1 4 1 0 5 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-1509 1 LVi-15096 LW-l5CY7 LW-15143 LLV-15166 Lb"d.15260 LW-15261 L K - 1 5 2 6 2 LW-15263 L\',' 1525? LW-15276 LW-15277 LW.15280 LW-15281 LW 15314 LVi.153 1 5 Li ' - l531C

Gasket Adapter Bracket Bracket Seat L ink S p r ~ r ~ y Carburetor Seal Bush~ng Clip Clip Pln searing Hose Starter Seal Sump Assy . Flange Crankshaft Crankshaft Assy. Tube Gage Seat A rm Gear Shaft Bushing Gasket

Eye Impeller Seal Gasket Washer Gear Ring Body Tappet Retainer Adapter Lockplate Gear Gear Stud Stud Seal Tube Valve Push Rod

C a ?

PART NO

LYCC3MING

PART NAME

Cylinder Assy. Cover Camshaft Crankcase Shaft Impeller Bracket Piston Hose

SERIES NUMERICAL INDEX (CONT.)

PAGE NO. PART NO.

PARTS CATALOG

PART NAME

Nipple Elbow Tube Tube Breather Magneto Kit, Magneto Term. Harness Magneto

PAGE NO.

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