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 129 of 590

TM 9-1240-401-34&P

1 If removed, apply sealing compound to threads and

install three setscrews (88) and three setscrews

(89).

3 Install wormshaft assembly (87) in cross-level

mechanism (61 ) and secure with seat (86) using

adjustable spanner wrench.

4 Apply sealing compound to setscrew (84) and se-

cure seat (86) with setscrew (84).

5 Apply sealing compound to threads and install

setscrew (85).

6 Apply oil to flat washer (83) and install with body

hub (82). Secure with tapered pin (81).

7 Install indicator (80), cross-level knob (79), two

new Iockwashers (78), and two machine screws

(77).

8 If removed, install headless straight pin (76).

9 Apply grease to gib key (75) and install

10 Apply grease to the worm of segment assembly

(90).

11 Rotate pitch knob (91) to move rocker assembly

toward rear of M145/M145A1 telescope mount until

rocker assembly makes contact with side of cross-

Ievel mechanism (61).

12 Install assembled cross-level mechanism (61) on

segment assembly (90).

13 Install two cap screws (67), two new Iockwashers

(68), two cap screws (65), and two new lock-

washers (66) snugly. Rotate cross-level mecha-

nism knob (79) from stop to stop and return to cen-

ter. Tighten four cap screws (65 and 67).

14 Install two clamping catches (69) using two new

Iockwashers (71) and two machine screws (70) for

each clamping catch (69).

15 Install V-bearing (74), spring (73), and plug (72).

16 Install tapered pin (63), sleeve bearing (64), and

nut (62).

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