HEAVY TANKS M6 AND M6A1

U.S. ARMY MILITARY HISTORY INSTITUTE CARLISLE BARRACKS, PA 17013008

DECLAS$Flrw TM 9 TM 9-721

WAR DEPARTMENT TECHNICAL MANUAL

HEAVY TANKS M6 AND M6A1

FEBRUARY 5, 1943

UNCLASSIFIED

REGRADED

AUTHORITY

.DECLASSIFIED

TECHNICAL MANUALI 1

No. 9-721 /

TM 9-721

WAR DEPARTMENT Washington, February 5, 1943

HEAVY TANKS M6 AND M6A1

Prepared under the direction of the Chief of Ordnance

SECTION

CONTENTS Paragraphs Pages

PART ONE-Operating Instructions

I. Introduction ................. II. Operation and controls .........

1- 5 6-13

3- 10 11- 24

III. Armament .................. IV. Preventive maintenance ........ V. Lubrication .................. VI. Care and preservation ..........

14-16 17-21 22-27 28-29

25- 28 29- 43 44- 49

50

VII. Tools and equipment ...........

30-31 51- 60

VIII. Operation under unusual condi-

tions .....................

32-35

IX. Materiel affected by chemicals ... 36-39

61- 63 64- 66

PART TWO-Organization Instructions

X. General information on mainte-

nance ...... ............... XI. Tools and equipment ......... XII. Organization spare parts and ac-

cessories .................. XIII. Engine and accessories ........ XIV. Fuel system ................

40 41-42

43 44-49 50-53

XV. Cooling system .... : .......... XVI. Torque converter .............. XVII. Hycon system ................ XVIII. Power train ..................

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54-55 56-58 59-61 62-64

67- 70 71- 75

76 77-100 101-105

106 107-111 112-115 116-117

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HEAVY TANKS M6 *ANDM6A1

Paragraphs Pages

SECTION XIX. Suspension and tracks .......

65-75 118-128

XX. Electrical system ............

76-83 129-145

XXI. Painting ....................

84-89 146-148

XXII. Shipment and storage......... 90-92 149-154

XXIII. References ..................

93-94 155-157

INDEX ... ................................

158-16,8

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PART ONE--Operating Instructions

Section I INTRODUCTION

Scope .................

..............

...... ..........

Contents and arrangement of manual ..........

............

Characteristics ...................

........ ....... ......

Differences among models .............................

Data ................ .............................. :

Paragraph

1 2 3 4 5

1. SCOPE.

a. This manual is intended to serve temporarily (pending the publication of a more complete revision) to give information and guidance to the personnel of the using arms charged with the operation, maintenance and minor repairs of this materiel.

b. Disassembly, assembly and such repairs as may be handled by the using arm personnel will be undertaken only under the supervision of an officer or the chief mechanic.

c. In all cases where the nature of the repair, modification, or adjustment is beyond the scope or facilities of the unit, the responsible ordnance service should be informed in order that trained personnel with suitable tools and equipment may be provided, or proper instructions issued.

2. CONTENTS AND ARRANGEMENT OF MANUAL.

a. The manual is divided into two parts. Part One consists of sections I through IX which contain information chiefly for the guidance of operating personnel. Part Two consists of sections X through XXIII, and contains information chiefly for the guidance of the using arm personnel doing maintenance work.

3. CHARACTERISTICS (figs. 1, 2, 3, 4, and 5).

a. Heavy Tanks M6 and M6A1 are armored, full tracklaying vehicles, each powered by an aviation-type; radial, 9-cylinder, air-cooled gasoline engine.

b. The engine is located in a compartment directly behind the driving compartment. Access to the engine, for replacement of certain accessories and the performance of limited maintenance operations, is provided by a door in the front engine compartment bulkhead, four hatch covers in the engine compartment top plate, and two removable inspection plates in the floor of the engine compartment.

c. The assembled torque converter, transmission and final drive are mounted directly behind the engine. The driving sprockets are thus at

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HEAVY TANKS M6 AND'M6A1

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