TM 1-1520-238-23
6-206
Change 9
6.43.
MAIN TRANSMISSION GENERATOR SEAL REPLACEMENT
6.43.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
6.43.2. Initial Setup
Tools:
Aircraft maintenance tool kit (item 372, App H)
Light duty laboratory apron (item 27, App H)
Industrial faceshield (item 129, App H)
Chemical protective gloves (item 154, App H)
Helicopter rotor head balance and blade tracking test
equipment (item 354, App H)
Expansion plug (item 230, App H)
Hand operated arbor press (item 234, App H)
Oil seal puller set (item 247, App H)
Adjustable air filtering respirator (item 262, App H)
Bushing driver kit (item 448, App H)
Materials/Parts:
Seals (2)
Packing
Brush (item 34, App F)
Petrolatum (item 138, App F)
Sealing compound (item 161, 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 panels L200 and/or R200 removed
1.32
Main transmission oil system drained
9.26
AC generator No. 1 removed (for replace-
ment of No. 1 generator seal)
9.27
AC generator No. 2 removed (for replace-
ment of No. 2 generator seal)
WARNING
FLIGHT SAFETY PART
The main transmission is a flight safe-
ty part. Failure to follow maintenance
instructions may result in serious
injury or death of crewmembers
and/or serious damage to the
helicopter.
NOTE
This task is typical for either No. 1 or No.
2 generator seal.
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