TM 9-721 1943 Heavy Tanks M6 and M6A1 - Internet Archive

U.S. ARMY MILITARY HISTORY INSTITUTE

CARLISLE BARRACKS, PA 17013008

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TM 9

TM 9-721

WAR

DEPARTMENT

TECHNICAL MANUAL

HEAVY TANKS

M6 AND M6A1

FEBRUARY 5, 1943

UNCLASSIFIED

AUTHORITY

REGRADED

.DECLASSIFIED

TM 9-721

TECHNICAL MANUALI 1

No. 9-721

/

WAR DEPARTMENT

Washington, February 5, 1943

HEAVY TANKS M6 AND M6A1

Prepared under the direction of the

Chief of Ordnance

CONTENTS

Paragraphs

Pages

PART ONE-Operating Instructions

SECTION

I.

II.

III.

IV.

V.

VI.

VII.

VIII.

Introduction .................

Operation and controls .........

Armament ..................

Preventive maintenance ........

Lubrication ..................

Care and preservation ..........

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

Operation under unusual condi?

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

IX. Materiel affected by chemicals ...

1- 5

6-13

14-16

17-21

22-27

28-29

30-31

311252944-

32-35

36-39

61- 63

64- 66

10

24

28

43

49

50

51- 60

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

XV. Cooling system .... : ..........

XVI. Torque converter ..............

XVII. Hycon system ................

XVIII. Power train ..................

1

40

41-42

67- 70

71- 75

43

44-49

50-53

54-55

56-58

59-61

62-64

76

77-100

101-105

106

107-111

112-115

116-117

TM 9-721

HEAVY TANKS M6 *ANDM6A1

Paragraphs

SECTION

INDEX

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

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

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

XXII. Shipment and storage.........

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

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

2

65-75

76-83

84-89

90-92

93-94

Pages

118-128

129-145

146-148

149-154

155-157

158-16,8

TM 9-721

1-3

PART ONE--Operating Instructions

Section I

INTRODUCTION

Paragraph

......

..........

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

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

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

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

......

........

.......

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

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

.............................. :

Data ................

1

2

3

4

5

1.

SCOPE.

a. This manual is intended to serve temporarily (pending the publi?

cation of a more complete revision) to give information and guidance

to the personnel of the using arms charged with the operation, mainte?

nance 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 adjust?

ment 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 instruc?

tions issued.

2.

CONTENTS AND ARRANGEMENT OF MANUAL.

a. The manual is divided into two parts. Part One consists of sec?

tions 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 per?

sonnel doing maintenance work.

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

a. Heavy Tanks M6 and M6A1 are armored, full tracklaying vehi?

cles, each powered by an aviation-type; radial, 9-cylinder, air-cooled

gasoline engine.

b. The engine is located in a compartment directly behind the driv?

ing compartment. Access to the engine, for replacement of certain acces?

sories and the performance of limited maintenance operations, is pro?

vided by a door in the front engine compartment bulkhead, four hatch

covers in the engine compartment top plate, and two removable inspec?

tion 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

3

TM 9-721

HEAVY TANKS M6 AND'M6A1

3

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