TM 55-1520-240-23-7
9-149.1
TEST EMERGENCY HOOK RELEASE RELAY BOX (AVIM)
9-149.1
INITIAL SETUP
Applicable Configurations:
All
Tools:
Electrical Repairer’s Tool Kit, NSN 5180-00-323-4915
Multimeter
Power Supply, 28 VDC
Stopwatch
Materials:
None
Personnel Required:
Aircraft Electrician
Inspector
References:
TM 55-1520-240-T
Equipment Condition:
Off Helicopter Task
1.
Remove four screws (1) and four washers (2).
Remove cover (3) from box (4).
2.
Connect multimeter (5) set to RX1 between
terminals 13 and 14 and X1 and 12 on relay (6).
Multimeter shall indicate continuity.
3.
Connect multimeter (5) set to RX1 between
terminals 11 and 12, C1 and C2, B1 and B2, and
A1 and A2 on relay (6). Multimeter shall indicate
open.
9-607
