TM 1-1520-238-23
6-316
Change 4
6.71.
MAIN TRANSMISSION ACCESSORY DRIVE LUBE PUMP REMOVAL/INSTALLATION
(AVIM)
6.71.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
6.71.2. 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)
Industrial faceshield (item 129, App H)
Chemical protective gloves (item 154, App H)
30 - 150 inch-pound 3/8-inch drive click type torque
wrench (item 441, App H)
Materials/Parts:
Bolt (AN104736 used for removal)
Packing (5)
Petrolatum (item 138, 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 doors T250L, T250R, T290L,
T290R, and L325 opened
1.32
Main transmission oil sumps drained
6.66
Main transmission rotor brake disk 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.
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