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 253 of 590

TM 9-1240-401-34&P

12

Remove boot (24) from toggle switch (25).

13

14

15

16

17

18

NOTE

Perform the following steps only as necessary

for replacement of damaged or defective

parts.

Remove hexagon plain nut (26) from toggle switch

(25).

NOTE

Rotate elevation handwheel to move sector

gear away from toggle switch.

Using tape (item 20, appx B), tag and unsolder four

wires (27) from toggle switch (25).

Remove toggle switch (25) from housing.

Unsolder wire (28) from contact of connector (29).

Remove four screws (30), four lockwashers (31),

connector (29), and gasket (32) from housing.

Discard lockwashers and gasket.

Unsolder wire (27) from contact (33). Unscrew

contact (33) and screw thread insert (34) from

mount.

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.

Change 1

5.1-19