TM 1-1520-238-23
Change 5
6-545
SECTION V. TAIL ROTOR GEARBOX MAINTENANCE
6.132.
TAIL ROTOR GEARBOX INSPECTION
6.132.1. Description
This task covers:
Inspection.
6.132.2. Initial Setup
Tools:
Aircraft maintenance tool kit (item 372, App H)
Light duty laboratory apron (item 27, App H)
0.20 - 1.00-inch inside micrometer caliper (item 50,
App H)
0.000 - 6.000-inch outside micrometer caliper set
(item 52, App H)
Industrial faceshield (item 129, App H)
Fluorescent inspection kit (item 138, App H)
0.000 - 0.125-inch dial indicator depth gage (item 145,
App H)
0.002 - 0.040-inch gap setting gage (item 147, App H)
Chemical protective gloves (item 154, App H)
0.001 - 0.200-inch dial indicator (item 176, App H)
Adjustable air filtering respirator (item 262, App H)
0 - 300 inch-pound 3/8-inch drive click type torque
wrench (item 439, App H)
Materials/Parts:
Alcohol (item 25, App F)
Brush (item 34, App F)
Lubricating oil (item 119, App F)
Mat (item 122, App F)
Methyl ethyl ketone (item 124, App F)
Personnel Required:
68D
Aircraft Powertrain Repairer/NDI
67R3F
Attack Helicopter Repairer/Technical
Inspector
References:
TM 55-1500-335-23
WARNING
FLIGHT SAFETY PART
The tail rotor gearbox 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.
GO TO NEXT PAGE
