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 27 of 590
TM 9-1240-401-34&P
Reference
designation Item
DS1
DS2
DS3
E1
E2
E3
E4
J1
J2
P1
S1
Overlay assembly
LED, T1-3/4 based
LED, T1-3/4 based
Electrical contact
Electrical contact
Electrical contact
Electrical contact
Electrical receptacle assembly
Electrical receptacle connector
Electrical plug connector
Toggle switch
Part no.
12599270-1 or
12599270-2
12360905-2
12360905-2
10553922
8202570
8262017
8262018
8215804
ML-C-39012/16-0001
MS35059-21
(9)
An external source of direct current electrical power is connected to the receptacle at the upper right rear corner of
the quadrant housing. A three-position, center OFF, toggle switch mounted through the bottom of the housing controls current
to the branch of the circuit serving counter and level LEDs and the branch serving the extension light. The latter assembly is
held by a spring clip behind the housing and connected by a wiled cord and bayonet locking connector to a receptacle at the
lower, left, rear corner of the housing. Spring contacts connect electrical cables in the housing to those in the cover leading to
counter and level LEDs, thus permitting removal of the cover assembly without disconnecting cables. Watertight, bayonet
locking metal caps cover level LEDs and an overlay assembly containing LEDs covers the counters.
Change 1
1-17
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