TM-9-1290-262-24-P

AIMING CIRCLE, M2A2, W/E

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT,AND GENERAL SUPPORT MAINTENANCE MANUAL

SEPTEMBER 1994

TM-9-1290-262-24-P - Page 105 of 192

ARMY TM 9-1290-262-24&P

MARINE CORPS TM 00476C-24&P

AIR FORCE TO 49A7-3-72/74

5 Level elbow telescope tube level vial by

adjusting the eccentric (2).

6 Rotate azimuth ring (1) of test fixture to

3200 mils

NOTE

Elbow telescope tube level bubble

should stay centered.

7 If elbow telescope tube level bubble does

not remain centered, eliminate half the

error with aiming circle elevation knob (3)

and remaining error with the eccentric (2).

8 Return azimuth ring (1) of test fixture and

aiming circle to zero.

9 The elbow telescope tube level bubble

should remain centered. if not, repeat

steps 4 thru 8 until elbow telescope tube

level bubble remains centered.

10 With azimuth ring (1) of test fixture and

aiming circle set to zero, superimpose

aiming circle reticle lines with projector

collimator reticle by adjusting projector

collimator leveling screws.

11 Rotate azimuth ring (1) of test fixture to

3200 mils Rotate aiming circle to 3200

mils.

12 Look through elbow telescope. The point

of intersection of elbow telescope reticle

lines and projector collimator reticle lines

must coincide within 0.1 mil. If within 0.1

mil, proceed to step 17. If not within 0.1

mil, proceed to step 13.

13 Eliminate half the error with projector colli-

mator adjusting screws (4) and remaining

error with two reticle adjusting screws.

Refer to page 4-27.

14 Return azimuth ring (1) of test fixture and

aiming circle to zero.

4-31