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 188 of 590

TM 9-1240-401-34&P

5-13. M117/M117A2 PANORAMIC TELESCOPE MAINTENANCE INSTRUCTIONS

- continued

I

c. Assembly - continued

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18

19

20

21

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23

If removed, install two headless straight pins (20).

Install cover (19) and secure with six new lock-

washers (17), three machine screws (15), and

three machine screws (16). Install chain of cap as-

sembly (18) under one machine screw (15). Install

cap assembly (18).

Apply grease (item 7, appx B) to seal (14) and in-

stall on cover (19).

Install three new shims (13) and gunner’s aid knob

(12) and secure with headless straight pin (11).

Apply grease (item 7, appx B) to new gasket (9)

and install on cover (19) (M117A2 only).

Appl

Y

grease (item 7, appx B) to new preformed

packing (10) and install in cap (8) of M117A2 pano-

ramic telescope or plate (6) of M117 panoramic

telescope.

Apply adhesive to threads of three machine screws

(7). Install cap (8) and secure with three machine

screws (7) (M117A2 only).

Apply adhesive to cap screw (3). Install plate (6)

and secure with flat washer (5), new Iockwasher

(4), and cap screw (3).

Install azimuth knob (1) on shaft (40).

Support azimuth knob (1) with a V-block and se-

cure with headless straight pin

(2).

5-14