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 42 of 590
TM 9-1240-401-34&P
2-11. M146 TELESCOPE MOUNT MAINTENANCE INSTRUCTIONS - continued
I
a. Disassembly
2
3
4
5
6
7
8
9
10
11
1
Remove three cap screws (1) and three lock-
washers (2). Discard Iockwashers.
Lift retaining ring (3), headed grooved pin (4),
spring (5), and yoke pin (6) as a unit from M146
telescope mount.
Headed grooved pin (4) is under spring ten-
sion.
Disengage retaining ring
(3)
and remove headed
grooved pin
(4)
and spring (5) from yoke pin (6).
Remove three cap screws (7) and three lock-
washers (8). Discard Iockwashers.
Remove yoke pin
(9)
and yoke (10) from bracket
(11).
Remove chain assembly (12) by removing two ma-
chine screws (13) and two Iockwashers (14). Dis-
card Iockwashers.
Remove setscrew (15) and insert (16).
Unscrew and remove knob (17), tapered pin (18),
shaft collar (19), and tapered pin (20) as a unit
from elevation slide (21).
Scribe a matching mark on shaft collar (19) and
tapered pin (20).
Aline access holes in knob (17) with tapered pin
(18).
Support knob (17) with a V-block and drive tapered
pin (18) from tapered pin (20) and shaft collar (19).
2-8
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