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 202 of 590

TM 9-1240-401-34&P

5-17. M117/M117A2 PANORAMIC TELESCOPE

MAINTENANCE INSTRUCTIONS

- continued

I

a. Disassembly - continued

I

28 Remove coupling (38), preformed packing (39),

and felt mechanical washer (40) from upper hous-

ing (12). Discard preformed packing and felt me-

chanical washer.

29 Remove counter assembly (ref. para 5-22).

30 Unsolder wire (41) from headed straight pin (42).

Remove retaining ring (43), headed straight pin

(42), spring (44), and insulator bushing (45).

31 Unsolder wire (41) from headed straight pin (46).

32 Remove insert (47), retaining ring (48), headed

straight pin (46), spring (49), and insulator bushing

(50).

I b. Repair

I

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 author-

ized parts listed in appendix D.

I c. Assembly

I

1 Install insulator bushing (50), spring (49), headed

straight pin (46), and retaining ring (48). Install

insert (47).

2 Solder wire (41) to headed straight pin (46) using

solder and flux.

3 Install insulator bushing (45), spring (44), headed

straight pin (42), and retaining ring (43). Solder

wire (41 ) to headed straight pin (42) using solder

and flux.

4 Install counter assembly (ref. para 5-22).

5-28