TM 1-1520-238-23
6-440
Change 2
6.100.
MAST BASE OIL SEAL RETAINER REMOVAL/INSTALLATION (AVIM)
6.100.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
6.100.2. 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:
Corrosion preventive compound (item 63, App F)
Personnel Required:
67R
Attack Helicopter Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
WARNING
FLIGHT SAFETY PART
The mast base oil seal retainer 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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