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 270 of 590

TM 9-1240-401-34&P

5.1-19. M15 QUADRANT MAINTENANCE INSTRUCTIONS - continued

a. Disassembly

1

2

3

4

5

6

Remove ring spacer (1) and preformed packing (2).

Discard preformed packing.

Remove three screws (3) and three packings (4).

Carefully work level assembly (5) from straight pin

(6).

Remove gasket (7). Discard gasket.

Remove straight pin (6), only if damaged.

Remove three screws (8), three lockwashers (9),

and counter assembly (10). Discard lockwashers.

Remove two straight pins (11), only if damaged.

7

Remove plug (12), spring (13), and plunger (14).

8

Remove capscrew (15) and lockwasher (16) from

gear sector (17). Discard lockwasher.

9

Using adjustable spanner wrench, remove ring

(18), ball socket seat (19), and wormshaft (20) from

M15 quadrant.

10

Remove gear sector (17) from quadrant spacer (21)

and remove two screws (22) from gear sector (17).

5.1-36

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