TM 1-1520-238-23
Change 1
15-93
15.24.
APU TIME TOTALIZING METER REMOVAL/INSTALLATION
15.24.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
15.24.2. Initial Setup
Tools:
Aircraft mechanic’s tool kit (item 376, App H)
Electrical tool kit (item 378, App H)
Electric gun type heater (item 163, App H)
Personnel Required:
67R
Attack Helicopter Repairer
68X
Armament/Electrical System Repairer
67R3F
Attack Helicopter 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 doors T250L, T250R, T290L,
T290R, and L325 opened
NOTE
This task is typical for present or new
type totalizing meter.
15.24.3. Removal
a. Enter pilot station (para 1.56). Observe all
safety precautions.
b. On pilot overhead center circuit breaker pan-
el, open FUEL APU and APU HOLD circuit
breakers.
c. Remove time totalizing meter (1) from APU
enclosure top cover (2).
(1) Identify and depin two splices SP1 and SP2
(3) from wiring harness W102 (4).
(2) Remove two screws (5) and washers (6).
(3) Remove meter (1).
15.24.4. Cleaning
a. Wipe elapsed time indicator mounting area
with a clean rag.
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