TM-9-2350-311-34-2

CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS HOWITZER, MEDIUM, SELF-PROPELLED, 155MM

TECHNICAL MANUAL; DIRECT AND GENERAL SUPPORT MAINTENANCE MANUAL

SEPTEMBER 1994

TM-9-2350-311-34-2 - Page 174 of 552

5-30

TM 9-2350-311-34-2

5-4 CANNON TUBE - CONTINUED

c. Installation - Continued

NOTE

Mount in vehicle should be horizontal. Breech ring key should be up and secured out of the way.

Torque key groove should be canted 45 degrees counterclockwise from its normal position for

installation purposes. If torque key groove is not in this position for installation and chain-type

pipe wrench is available, perform step 4. If chain-type pipe wrench is not available, perform

steps 5 through 7.

4

Loosen gun tube sling (6). Move one wedge away from cannon tube (5) making it free to rotate. Using

chain-type pipe wrench (10), rotate cannon tube 45°. Slide wedge back into place to hold cannon tube in

position. Tighten gun tube sling.

NOTE

If chain-type pipe wrench has been used, skip to step 9.

5

Install muzzle brake (11) (TM 9-2350-311-10).

6

Install a 4 x 4 inch wooden block at least 5 feet long into muzzle brake (11).

7

Using wooden block for leverage, rotate muzzle brake (11) and cannon tube (5) 45°. Use wedge to hold can-

non tube in position.