TM-9-1240-401-34-P

TELESCOPE MOUNT M146: M118A2 AND M118A3; TELESCOPE MOUNT M145: M145A1; PANORAMIC TELESCOPE: M117 AND M117A2; FIRE CONTROL QUADRANT: M15; PERISCOPE: M42

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL

JULY 1993

TM-9-1240-401-34-P - Page 292 of 590

TM 9-1240-401-34&P

5.1-22. LEVEL ASSEMBLY MAINTENANCE INSTRUCTIONS

a. Disassembly

1

2

3

4

5

6

7

8

9

10

Using fabricated eccentric tool (fig. C-2, appx C),

remove rings (1 and 2) and eccentric bushings (3

and 4).

Slide fire control levels (5 and 6) from bracket (7)

and level vial covers (8 and 9).

Remove level vial covers (8 and 9) from bracket (7).

Remove screw (10), lockwasher (11), electrical

cover (12), spacer (13), and LED (14) from bracket

(7). Discard lockwasher.

Using tubular spanner wrench 11/16 inch and 45/64

inch, remove ring (15) from bracket (7).

Remove two screws (16) and two lockwashers (17).

Discard lockwashers.

Unsolder contact (18) from wire lead with electrical

connector (19) attached.

Withdraw electrical connector (19) with wire lead

attached from lamp recess.

Remove light lens (20).

Remove two pins (21) only if necessary for

replacement.

b. Repair

1

Remove corrosion, grease, and dirt from all parts.

Refer to TM 9-254 for cleaning instructions.

2

Visually inspect for missing or damaged parts.

3

Repair or replace parts in accordance with authorized

parts listed in appendix D.

5.1-58

Change 1