TM-9-2350-311-10

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

TECHNICAL MANUAL; OPERATOR’S MANUAL

NOVEMBER 1994

TM-9-2350-311-10 - Page 628 of 775

TM 9–2350–311–10

5–90

Change 3

5–17 MISFIRE AND CHECKFIRE PROCEDURES

The precautions and actions associated with misfire and checkfire are the same for the M712 projectile as for other

projectiles in this manual. Refer to paragraph 2–15.

5–18 OPERATION OF PROJECTILE EXTRACTOR

a.

General

The projectile extractor (1) is used to remove the M712 and M823 projectiles from the weapon breech assembly. The

following procedures include setting up the projectile extractor in preparation for use, and the breakdown procedures

for stowage.

b.

Setup For Use

1

Get projectile extractor (1) from stowage brackets on right wall of the crew compartment.

NOTE

Extend the guides for M109A2/A3/A4 M185 Cannon tubes. Retract the guides for M109A5

M284 Cannon tube.

2

Inspect to make sure that the five guide inserts (2) on the projectile extractor (1) are correctly installed

for cannon tube.

3

While standing at the rear loosen drive nut (3) (clockwise) to farthest white marks (forward mark).

4

Move brace (4) back.

5

Loosen two straps (5 and 6).

6

Remove ratchet (7).

7

Disengage locking pin (8).

REAR

FRONT

2

3

4

5

6

7

8

Projectile extractor is shown

in retracted position.

1

NOTE

GUIDE

INSERTS

EXTENDED

GUIDE

INSERTS

RETRACTED