Lycoming
652 Oliver Street
17701 USA
Williamsport, PA 17701 U.S.A.
TECHNICAL
717/323-6181 TECHNICAL
PUBLICATION REVISION
REVISION NO. PUBLICATION PUBLICATION NO. PUBLICATION DATE
60294-9-2 76 Series Engine Over- 60294-9 August 1980 haul Manual
The page(s) furnished herewith are intended to replace the corresponding page(s) of the publication indi-cated above.
Previous revisions to this publication This revision consists of:
February, 1992 i June 1996 i
Overhaul Manual
TEXTRON Lycoming
76 Series Engines
Approved by F.A.A.
Part No. 60294-g 3rd Printing August 1996
652 Oliver Street
Williamsport, PA 17701 U.S.A.
717/323-6181
OVERHAUL MANUAL LYCOMING 76 SERIES AIRCRAFT ENGINES
TO THE OWNER OF THIS MANUAL THIS MANUAL HAS BEEN DESIGNED TO PERMIT ADDITION OF NEW AND REVISED PAGES, AS REQUIRED FOR COVERAGE OF NEW ENGINE MODELS, NEW SHOP PROCEDURES, AND PROCESSES. NEW AND REVISED PAGES WILL BE FURNISHED TO OWNERS OF THIS MANUAL WHO FILL OUT THE REGISTRATION CARD AND RETURN IT TO LYCOMING. THE PRICE OF THE MANUAL INCLUDES THE COST OF MAILING ALL REVISED AND NEW PAGES FOR THIS MANUAL TO THE ADDRESS SHOWN ON THE CARD FOR A PERIOD OF THREE (3) YEARS. REGISTERED OWNERS OF THE MANUAL WILL BE NOTIFIED OF ANY CHANGE IN REVISION POLICY OR COST OF REVISIONS.
SERVICE BULLETINS, LETTERS AND INSTRUCTIONS
Although the information contained in this manual 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 from all Lycoming distributors or from the factory by subscription. Consult the latest edition of Service Letter No. L114 for subscription information.
SPECIAL NOTE
The illustrations, pictures and drawings shown in this publication are typical of the subject matter they por-tray; in no instance are they to be interpreted as examples of any specific engine, equipment or part thereof.
OVERHAUL MANUAL LYCOMING 76 SERIES AIRCRAFT ENGINES
TABLE OF CONTENTS
SECTION PAGE SECTION PAGE
1. INTRODUCTION 1-1 5. CYLINDERS, PISTONS AND VALVE TRAIN (CONT).
2. GENERAL DESCRIPTION Disassembly 5-1 Cylinders 2-1 Cleaning 5-3 Valve Operating Mechanism 2-1 Inspection Crankcase 2-1 Cylinder 5-4 Crankshaft Counterweight 2-2 Pistons 5-5 Connecting Rods 2-2 Valve Rockers 5-5 Pistons 2-2 Push Rods 5-5 Lurication System 2-2 Valves 5-5 Cooling System 2-2 Hydraulic Lifter 5-6 Induction System 2-2 Valve Springs 5-7 Ignition System 2-2 Repair and Replacement Spark Plug Inserts 5-7
3. GENERAL OVERHAUL PROCEDURES Valve Seat 5-8 Valve Refacing 5-9 General 3-1 Valve Guide 5-9 Cleaning Nitrided Cylinder Barrels 5-10 Degreasing 3-1 Chrome Plated Cylinder Barrels 5-10 Removal of Hard Carbon 3-1 Valve Repairs 5-10 Inspection Warped Exhaust Flanges 5-10 General 3-2 Reassembly Bearing Surface 3-2 Assembly of Pistons 5-10 Gears 3-2 Assembly of Cylinders 5-11 Corrosion 3-2 Installation of Cylinder and Pistons 5-11 Screwed Fittings 3-2 Intercylinder Baffles 5-12 Magnetic 3-2 Corrosion Prevention 3-2 6. OIL SUMP AND FUEL INDUCTION Repair and Replacement Damaged Parts 3-2 General 6-1 Painted Parts 3-3 Disassembly Replacement of Studs 3-3 Intake Pipes 6-1 Corrosion Prevention 3-3 Carburetor 6-1 Reassembly Oil Suction Screen 6-1 Corrosion Prevention 3-3 Oil Sump 6-1 Pre-Lubrication of Parts 3-3 Cleaning Oilite Bearing 3-3 Oil Sump 6-1 Table of Limits 3-4 Carburetor 6-1 Oil Seal and Gaskets 3-4 Inspection Arbitary Replacement of Parts 3-4 Oil Suction Screen 6-1 Carburetor 6-1
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