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 146 of 590

TM 9-1240-401-34&P

4-19. M145/M145A1 TELESCOPE MOUNT MAINTENANCE INSTRUCTIONS

I This task covers:

a. Disassembly b. Repair c. Assembly

lTIAL SET-UP

Tool Kit, Electronic System, Repair, Field Mainte-

nance(SC5180-95-CL-B29)

5180-01-168-0487

TM 9-254

.

aterials/Parts

. .

ment Condition

Grease (Item 6, appx B)

Lockwashers (10) (Item 68, appx E)

M145/M145A1 telescope mount removed

Oil, lubricating (Item 9, appx B)

from howitzer (TM 9-2350-311-20-2/

Sealing compound (Item 13, appx B)

TM 9-2350-314-20-2)

Self-locking nut (Item 12, appx E)

Self-locking nut (Item 16, appx E)

Counter box assembly removed (ref. para 4-20)

1

a. Disassembly

I

1 Drive out tapered pin (1); remove pitch knob (2)

and flat washer (3) from shouldered shaft (4).

2 Remove six machine screws (5), six Iockwashers

(6), six flat washers (7), and cover (8). Discard

Iockwashers.

3 Drive out tapered pin (9) from bevel gear (10) and

shouldered shaft (4).

4 Remove threaded ring (11) and slide out shoul-

dered shaft (4) and related parts. Remove bevel

gear (10) from shouldered shaft (4).

5 Remove self-locking nut (12), bearing (13), sleeve

spacer (14), and bearing (15) from shouldered

shaft (4). Discard self-locking nut.

6 Remove plug (16), spring (17), and V-bearing (18).

7 Remove setscrew (19).

4-32