FRAME 5

TM 9-2350-222-20-2-1

3-4.

SYNCHRONIZATION AND BACKLASH CHECK OF 165 MM GUN WITH

GUNNER'S PERISCOPE M32C-RAMP METHOD (CONT)

FRAME 5

Step

Procedure

While looking through daylight eyepiece of gunner's periscope, adjust boresight knobs (1)

and (2) until aiming cross of reticle is on same aiming point as gun (view A).

Write down settings of boresight knobs (1) and (2).

Repeat frame 4 and steps 1 and 2 above for gun elevation angles of 178 and 267 mils

as tank is on the way up the ramp.

If boresight knob readings exceed 0.3 mil in this boresight check continue with frame 6.

If boresighting, synchronization, and synchronization adjustment are within tolerance,

continue with backlash check. GO TO FRAME 11.

GO TO FRAME 6

Para 3-4 Cont

3-16