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 201 of 590

TM 9-1240-401-34&P

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

Remove four cap screws (9) and four lockwashers

(10). Discard lockwashers.

Separate lower housing (11) from upper housing

(12).

Remove and discard preformed packing (13).

Remove headless straight pin (14), only if dam-

aged.

Remove headless straight pin (15), only if alarm

aged.

NOTE

Steps 15 through 19 refer to M117 panoramic

telescope only.

Remove cap (16).

Remove contact assembly (17).

Remove cap (18).

Remove retaining ring (19).

Remove bushing insulator (20), grooved pin (21).

and wire (22).

Remove plug (23) and spring (24).

Using adjustable spanner wrench, remove

threaded ring (25) with worm shaft (26) and related

parts attached.

Remove plunger (27).

Position worm shaft (26) on V-block and remove

tapered pin (28) and gear (29).

Remove threaded ring (25), spring (30), and two

flat washers (31 and 32) from worm shaft (26).

Remove setscrew (33), self-locking nut (34), and

ring spacer (35). Discard self-locking nut.

Remove self-alining bearing (36).

Remove preformed packing (37) from threaded

ring (25) and discard.

5-27