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 196 of 590

TM 9-1240-401-34&P

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5-15. LAMP ASSEMBLY AND RELATED PARTS (M117A2) MAINTENANCE INSTRUC-

TIONS - continued

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a. Removal/Disassembly - continued I

22

23

24

25

Remove two machine screws (39) and two lock-

washers (40) from contact assembly (41 ). Discard

lockwashers.

Remove two machine screws (42), two lock-

washers (43), and retaining strap (44). Discard

Iockwashers.

Remove contact assembly (41).

Remove three machine screws (45), three lock-

washers (46), and housing (47). Discard lock-

washers.

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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.

I c. Assembly/installation

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1

2

3

4

5

Install housing (47) on upper housing (48) and se-

cure with three new Iockwashers (46) and three

machine screws (45).

Install contact assembly (41) on upper housing (48)

and secure with two new Iockwashers (40) and two

machine screws (39).

Install contact assembly (41) in housing (47) and

secure with retaining strap (44), two new lock-

washers (43), and two machine screws (42).

Install two tubes (35) into holder (37) and plug (34).

Install electrical lead (28) and wire (31) in holder

(37) with raised brass portion facing outward.

5-22