TM 1-1520-238-23
6-250
Change 1
6.54.
MAIN TRANSMISSION COMPRESSOR DRIVE ADAPTER AND SEAL
REMOVAL/INSTALLATION
4
6.54.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
6.54.2. 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)
Main transmission seal removal/installation tool (Figure
D-461, App D)
Adjustable air filtering respirator (item 262, App H)
7/16 x 3/8-inch drive deep socket wrench socket
(item 302A, App H)
30 - 150 inch-pound 1/4-inch drive click type torque
wrench (item 435, App H)
Materials/Parts:
Packings (3)
Petrolatum (item 138, App F)
Sealing compound (item 177, App F)
Personnel Required:
68D
Aircraft Powertrain Repairer/NDI
67R3F
Attack Helicopter Repairer/Technical
Inspector
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
1.32
Main transmission oil drained
7.120
Shaft driven compressor removed
WARNING
FLIGHT SAFETY PART
The main transmission is a flight safe-
ty part. Failure to follow maintenance
instructions may result in serious
injury or death of crewmembers
and/or serious damage to the
helicopter.
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M04-2928-1
