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 140 of 590

TM 9-1240-401-34&P

4-16. QUADRANT SUPPORT ASSEMBLY MAINTENANCE INSTRUCTIONS - continued

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a. Disassembly

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2

3

4

5

6

7

8

9

10

11

12

1

Remove two machine screws (1), two Iockwashers

(2), plate insulator(3), and plate insulator (4). Dis-

card Iockwashers.

Remove two machine screws (5), two lug terminals

(6), and plate (7).

Remove retainer (8), spring (9), and V-bearing (10)

on Ml 45A1 telescope mount.

Remove two machine screws (11), two lock-

washers (12), and two retaining straps (13). Dis-

card Iockwashers.

Remove machine screw (14), Iockwasher (15), ma-

chine screw (16), Iockwasher (17), and clamp (18).

Discard Iockwashers.

Remove machine screw (19), Iockwasher (20),

electrical connector cover (21), and LED (22). Dis-

card Iockwasher.

Using 11/16 and 45/64 inch tubular spanner

wrench, remove threaded ring (23).

Remove electrical lead (24) and lens (25).

Remove threaded ring (26), using fabricated ec-

centric tool.

Remove holder (27) and control cam (28). Slide out

level (29) and remove cover (30).

Remove tapered pin (31) and knob (32) on M145

telescope mount.

Remove spring pin (33) and knob (34) on M145A1

telescope mount.

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b. Repair

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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.

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