Sign up to sell your inventory with NSN Lookup

TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download

Page 689 of 828

TM 9–2350–311–20–2 Change 2 18–19 a. Leveling Gun Trunnions NOTE • All quadrant seats must be wiped clean before positioning gunner’s quadrant on them for taking readings. • If cannon is not equipped with muzzle flats, use gun tube leveling fixture. 1 Bring cannon to zero elevation using M1A1 gunner’s quadrant (1) (end-for-end correction applied) on the flat of the muzzle end of tube (2). 2 Place M1A1 gunner’s quadrant (1) with zero reading (end-for-end correction applied) on breech ring quad- rant seats (3). 3 Level gun trunnions by traversing cab left or right until bubble (4) is centered. 2 3 4 1 TOP SURFACE BOTTOM SURFACE 1 1 GUN TUBE LEVELING FIXTURE