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 100 of 192

ARMY TM 9-1290-262-24&P

MARINE CORPS TM 00476C-24&P

AIR FORCE TO 49A7-3-72/74

4-4. TEST AND ADJUSTMENT PROCEDURES (cont).

DEFINITION

1

2

3

4

5

6

7

8

9

Look into dioptometer eyepiece and turn eyepiece until reticle is in sharpest focus.

Look at a target 45 inches away. Slide objective lens in or out to bring target in sharpest focus.

Hold dioptometer up to aiming circle eyepiece and check that collimator definition lines are in

sharp focus. If the lines are in sharp focus, remove dioptometer and proceed to the next

adjustment procedure. If lines are not in sharp focus, proceed with steps 4 thru 9.

Recheck eyepiece focus. Refer to page 4-23.

Recheck parallax of objective assembly. Refer to page 4-24.

Check prism installation. Refer to page 4-12.

If definition is still poor, replace prism. Refer to page 4-12.

Recheck parallax of objective assembly. Refer to page 4-24.

Repeat steps 1 thru 3.

4-26