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Page Title:
SYNCHRONIZATION SPINDLE ADJUSTMENT OF 165-MM GUN WITH GUNNER'S PERISCOPE M32C (CONT) |
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  TM 9-2350-222-20-2-1
S Y N C H R O N I Z A T I O N SPINDLE ADJUSTMENT OF 165-MM GUN WITH
3-7.
GUNNER'S PERISCOPE M32C (CONT)
FRAME 1
Procedure
Step
1.
Perform calibration of Gunner's Quadrant M1A1 (TM 9-1290-200-14&P).
Measure elevation angle of gun using gunner's quadrant M1A1 (1) placed on gun breech
2.
quadrant seats.
3.
Add 120 mils to angle measured in step 1 and set this sum on gunner's quadrant M1A1.
4.
Place gunner's quadrant M1A1 (1) on gun breech quadrant seats.
5.
Manually elevate gun without over travel until bubble on gunner's quadrant is centered
(TM-10).
6.
Remove gunner's quadrant M1A1 from gun breech quadrant seats.
While looking through daylight eyepiece of gunner's periscope, have driver back tank up
7.
ramp or hill until periscope reticle is approximately centered on target aiming point.
While looking through breech boresight hole (2) with binoculars (3), manually position
8.
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 2
Para 3-7 Cont
3-29
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