TM-9-2350-311-34-2 Maintenance Manual for Volume 2 M109 Cab Download
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TM 9-2350-311-34-2 14 15 16 17 NOTE There is an alternate method for rotating cannon tube for installation if chain-type pipe wrench is not available and muzzle brake has not been removed. To use alternate method, perform steps 16 and 17 instead of 14 and 15. Place chain-type pipe wrench (10) on cannon tube (5) at a location without critical external features. Rotate cannon tube (5) 45° clockwise to engage cannon tube and breech ring (9) threads. Insert available 4 x 4 inch wooden block at least 5 feet long into muzzle brake (11). Using wooden block for leverage, rotate muzzle brake (11) and cannon tube (5) cannon tube and breech ring (9) threads. 45° clockwise to engage 5-33