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 261 of 590

a. Disassembly

TM 9-1240-401-34&P

1

2

Remove two screws (1) and cap (2) from cover (3).

Remove four screws (4) and identification plates (5

and 6) from cover (3).

3

Pull wire (7) with lamp base through to front of

overlay assembly (8).

4

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

inch, remove retaining ring (9).

5

Remove overlay assembly (8) from cover (3).

6

If necessary for replacement, remove two dial

windows (10) and observation window (11) by

tapping side facing interior of cover (3).

Remove all

fragments of glass. Scrape off all adhesive material.

Avoid enlarging opening.

7

8

9

Remove two screws (12), two lockwashers (13), two

insulator bushings (14), insulator plates (15 and 16),

and contact (17). Discard lockwashers.

Using 1/2 and 33/64 inch tubular spanner wrench,

remove externally threaded ring (18).

If necessary for replacement, remove electrical plug

connector (19) and lens (20) by unsoldering wire

from contact (17).

Change 1

5.1-27