TM-9-2350-311-20-2

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS

DECEMBER 1993

TM-9-2350-311-20-2 - Page 285 of 828

TM 9–2350–311–20–2

5–29

5–10 TORQUE KEY

This task covers:

a.

Removal

b.

Inspection

c.

Installation

INITIAL SETUP

Tools

Artillery and turret mechanic’s tool kit

(SC 5180–95–CL–A12)

Materials/Parts

Grease (item 19, Appx D)

Lockwashers (8 or 10) (item 88, Appx G)

Lockwire (item 32, Appx G)

a.

Removal

NOTE

After firing 1500 rounds, torque key must be removed and measured for wear.

1

Remove lockwire (1) and discard.

NOTE

Eight lockwashers and cap screws are used to secure torque key to M182 mount. Ten lockwashers

and cap screws are used for M178 mount.

2

Remove eight or ten cap screws (2), eight or ten lockwashers (3), and torque key (4). Discard lockwashers.

M178 MOUNT CONFIGURATION

M182 MOUNT CONFIGURATION

2

3

4

1

1

4

2

3