TM 1-1520-238-23
6-48
Change 4
6.9.
AFT HANGER BEARING COUPLING REMOVAL/INSTALLATION
6.9.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
6.9.2. 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)
10 - 50 inch-pound 1/4-inch drive click type torque
wrench (item 434, 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 1-1520-238-T
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.2
Access fairing R410 opened
WARNING
FLIGHT SAFETY PART
The aft hanger bearing 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.
NOTE
For purposes of identification and appli-
cable to this task only, coupling flange
with attached nutplates is considered
coupling aft flange.
GO TO NEXT PAGE
M04-0443-1
