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 132 of 590

TM 9-1240-401-34&P

4-14. DISK ASSEMBLY MAINTENANCE INSTRUCTIONS - continued

[a. Disassembly

1

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Remove threaded ring (1) using fabricated eccen-

tric tool.

Remove cell (2).

Slide level (3) out of disk assembly (4), and remove

cover (5).

Remove two machine screws (6 and 7) and two

Iockwashers (8 and 9). Discard Iockwashers.

Remove plate insulator (10) and access cover(11)

with related parts.

Unsolder wire (12) from lug terminal (13).

Remove machine screw (14), Iockwasher (1 5), and

hub clamp (16). Discard Iockwasher.

Remove machine screw (17), lug terminal (13), and

plate (18) from access cover (11 ).

Remove three machine screws (19), three lock-

washers (20), and three retaining straps (21 ). Dis-

card Iockwashers.

Remove machine screw (22), Iockwasher (23), and

electrical cover (24). Discard Iockwashers.

NOTE

Old disk assemblies contain lamps in place of

LEDs.

Remove LED (25).

Using 11/16 and 45/64 inch tubular spanner

wrench, remove threaded ring (26).

Remove electrical lead (27).

Remove two machine screws (28) and reflector

(29), only if necessary for replacement.

Remove tapered pin (30), only if damaged.

Remove two rivets (31 ) and mirror (32), only if nec-

essary for replacement.

4-18