TM 1-1520-238-23
6-528
6.127.
INTERMEDIATE GEARBOX MACHINE PLUG REMOVAL/INSTALLATION
6.127.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
6.127.2. Initial Setup
Tools:
Aircraft maintenance tool kit (item 372, App H)
Light duty laboratory apron (item 27, App H)
Industrial faceshield (item 129, App H)
Chemical protective gloves (item 154, App H)
0 - 75 inch-pound 1/4-inch drive dial indicator torque
wrench (item 446, App H)
Materials/Parts:
Packing
Protective plug (M5501/1-F3)
Assembly fluid (item 30, App F)
Personnel Required:
68D
Aircraft Powertrain Repairer/NDI
67R3F
Attack Helicopter Repairer/Technical
Inspector
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.2
Access fairing R510 removed
WARNING
FLIGHT SAFETY PART
The intermediate gearbox is a flight
safety part. Failure to follow
maintenance instructions may result
in serious injury or death of
crewmembers and/or serious damage
to the helicopter.
6.127.3. Removal
a. Remove machine plug (1) from intermediate
gearbox (2).
(1) Remove plug (1) from gearbox (2).
(2) Remove and discard packing (3) from plug (1).
b. Install protective plug (4) in gearbox (2).
6.127.4. Cleaning
a. Clean removed and attaching parts or sur-
faces (para 1.47).
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