TM 1-1520-238-23
6-323
6.73.
MAIN TRANSMISSION APU DRIVE FLANGE REMOVAL/INSTALLATION
6.73.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
6.73.2. Initial Setup
Tools:
Aircraft mechanic’s tool kit (item 376, 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)
Materials/Parts:
Packing
Grease (item 87, App F)
Lubricating oil (item 119, App F)
Personnel Required:
67R
Attack Helicopter Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.2
Access doors T250L, T250R, T290L,
T290R, and L325 opened
6.16
No. 7 drive shaft and anti-flail support re-
moved
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.
6.73.3. Removal
a. Remove APU drive flange (1) from spur gear
(2) in transmission housing (3).
(1) Remove and discard packing (4).
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M04-2957-2
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