TM 1-1520-238-23
E-22
Change 8
E.11.
AUXILIARY POWER UNIT (APU) STORAGE PRESERVATION
This task covers:
APU Storage Preservation.
E.11.1. Initial Setup
Tools:
Aircraft mechanic’s tool kit (item 376, App H)
Light duty laboratory apron (item 27, App H)
Industrial faceshield (item 129, App H)
Chemical protective gloves (item 154, App H)
Aircraft power unit (item 232, App H)
Materials/Parts:
Protective caps
Barrier material (item 32, App F)
Lubricating oil (item 117, App F)
Tape (item 207, App F)
Tubing (item 213, App F)
Personnel Required:
67R
Attack Helicopter Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
References:
TM 1-1500-204-23
TM 1-2835-213-23
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.2
Access doors T250L, T250R, T290L,
T290R, and L325 opened
15.41
APU enclosure removed
NOTE
Refer to TM 1-1500-204-23 for general procedures for preservation of aircraft.
E.11.2. APU Storage Preservation
a. Enter pilot station (para 1.56). Observe all safety precautions.
(1) On pilot center circuit breaker panel, open FUEL BST and FUEL APU circuit breakers and close APU
HOLD circuit breaker.
WARNING
Ignition system contains high voltage electricity and can cause injury or death. Exercise
extreme caution when handling the igniter lead.
b. Remove igniter plug from combustor cap (TM 1-2835-213-23).
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