SYNCHRONIZATION AND BACKLASH CHECK OF 165 MM GUN WITH
GUNNER'S PERISCOPE M32C-RAMP METHOD (CONT)
Have driver position tank down ramp or hill to approximately original position.
Manually lower gun to about 20-35 mils below zero mils (TM-10)
Set zero mils on gunner's quadrant M1A1 (1).
Place gunner's quadrant M1A1 (1) on gun breech quadrant seats with Line-of-Fire facing
Manually elevate gun without over travel until bubble on gunner's quadrant M1A1 (1) is
While looking through breech boresight hole (2) with binoculars (3), manually position
gun without over travel so that cross formed by threads (4) on gun muzzle is lined up
with target aiming point (TM-10).
GO TO FRAME 7
Para 3-4 Cont