TM 1-1520-238-23
6-379
6.87.
MAIN TRANSMISSION OIL DRAIN TUBES REMOVAL/INSTALLATION
6.87.1. Description
This task covers:
Removal. Cleaning. Inspection. Repair. Installation.
6.87.2. Initial Setup
Tools:
Aircraft mechanic’s tool kit (item 376, App H)
Personnel Required:
67R
Attack Helicopter Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
References:
TM 1-1500-204-23
TM 9-1090-208-23-1
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.2
Access doors T250L,
T250R, T290L, T290R, and
L325 opened; panels L200
and R200 removed
2.84
Forward catwalk panel
folded back
TM 9-1090-208-23-1
Ammunition storage maga-
zine removed
WARNING
FLIGHT SAFETY PART
The main transmission 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.
NOTE
Main transmission oil filler neck drain tube is on right side.
Tail rotor output shaft seal retainer drain tube is on left side.
Each drain tube is in three sections which can be removed or installed separately.
Task is typical for either left or right side tube sections.
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