TM 1-1520-238-23
7-561
7.148.
AIR PRESSURE REGULATING VALVE REMOVAL/INSTALLATION
7.148.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
7.148.2. 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)
1 1/16 & 1 1/4-inch open end wrench (item 416, App H)
1 3/8 & 1 7/16-inch open end wrench (item 421, App H)
Materials/Parts:
Packing (2)
Petrolatum (item 138, App F)
Damping fluid (item 69, App F)
Personnel Required:
67R
Attack Helicopter Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
References:
TM 1-1520-238-T
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.2
Access doors T250L, T250R, T290L,
T290R, and L325 opened
13.3
Environmental control unit removed
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