TM 9-2350-261-20-1
T U R R E T P O W E R / P R O X I M I T Y S W I T C H T R O U B L E S H O O T I N G
( M 7 4 1 A 1 O N L Y)
INITIAL SETUP
Tools:
Equipment Conditions:
General Mechanics Tool Kit (Item 30, App D)
Engine stopped/shudown (see your -10)
Digital Multimeter (Item 43, App D)
Carrier blocked (see your -10)
Driver and cargo hatches closed
Personnel Required:
(see Your -10)
Unit Mechanic
Rear compartment floor plates removed
(page 24-40)
References:
See your -10
1. Turn MASTER SWITCH to ON (see your -10).
2. Turn TURRET POWER to ON (see your -10).
GO TO PAGE 3-170
3. Does turret power come on?
1. Move MASTER SWITCH to OFF.
2. Remove wiring harness plug (1) from slip ring jack
A14J1.
3. Measure resistance on terminal board TB1 (2) be-
tween terminals 1 (3) and 4 (4). Reed measure-
ment.
4. Open commander’s hatch door and repeat
measurement.
5. Does multimeter read 0 ohms with hatch closed and
infinity with hatch open?
3-168
1. Replace comman
ders hatch
interlock switch
(page 17-22).
2. Verify no faults found.
