TM 1-1520-238-23
9-370
9.103.
LANDING/SEARCHLIGHT RELAY REPLACEMENT
9.103.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
9.103.2. Initial Setup
Tools:
Electrical tool kit (item 378, App H)
Light duty laboratory apron (item 27, App H)
Chemical protective gloves (item 154, App H)
Ohmmeter (item 218, App H)
Adjustable air filtering respirator (item 262, App H)
5-watt electric soldering iron (item 333, App H)
Materials/Parts:
Solder (item 189, App F)
Personnel Required:
68X
Armament/Electrical System Repairer
68X3F
Armament/Electrical System Repairer/
Technical Inspector
References:
TM 1-1520-238-T
TM 55-1500-323-24
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.2
Access door R90 opened
9.103.3. Removal
a. Enter pilot station (para 1.56). Observe all
safety precautions.
b. On pilot center circuit breaker panel, open LT
SRCH/LDG and LT SRCH/LDG CONTR circuit
breakers.
c. Identify and depin wires (1) from terminal
blocks TB1–1/2 (2) and TB1–3 (3)
(TM 55-1500-323-24).
d. Remove landing/searchlight relay (4) from
mounting bracket (5).
(1) Remove four screws (6) and washers (7).
(2) Remove relay (4) from bracket (5) and struc-
ture (8).
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