TM 1-1520-238-23
6-18
Change 4
6.3.
MAIN TRANSMISSION INPUT COUPLING REMOVAL/INSTALLATION
6.3.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
6.3.2. Initial Setup
Tools:
Aircraft maintenance tool kit (item 372, App H)
7/16 x 3/8-inch drive torque wrench adapter (item 22,
App H)
Light duty laboratory apron (item 27, App H)
Chemical protective gloves (item 154, App H)
Adjustable air filtering respirator (item 262, App H)
30 - 150 inch-pound 3/8-inch drive click type torque
wrench (item 441, App H)
Materials/Parts:
Corrosion preventive compound (item 62A, App F)
Personnel Required:
68D
Aircraft Powertrain Repairer/NDI
67R3F
Attack Helicopter Repairer/Technical
Inspector
References:
TM 1-1500-204-23
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
6.2
No. 1 and/or No. 2 engine input drive shaft
removed
WARNING
FLIGHT SAFETY PART
The input coupling 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.
6.3.3. Removal
a. Remove input coupling (1) from transmission
flange (2).
(1) Remove five bolts (3) from flange (2).
(2) Remove coupling (1) from flange (2).
6.3.4. Cleaning
a. Clean removed and attaching parts or sur-
faces (para 1.47).
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M04-0431-1
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