TM 55-1520-240-23-5
6-40
INSTALL FORWARD TRANSMISSION ROTOR SHAFT OIL SEAL
6-40
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692
Aluminum Drift, 8-1/2 Inches OD, 1/4 Inch Thick Wall
Gun Heater
Pyrometer
Materials:
Acetone (E20)
Cloths (E120)
Gloves (E186)
Grease (E190)
Kevlar Gloves (E187)
Personnel Required:
Medium Helicopter Repairer
Inspector
References:
TM 55-1520-240-23P
Acetone (E20) is flammable and toxic.
It can irritate skin and cause burns.
Use only in well-ventilated area, away
from heat and open flame. In case
of contact, immediately flush skin
or eyes with water for at least 15
minutes. Get medical attention for
eyes.
1.
Clean seal seating surface (1) inside slider shaft
(2). Use acetone (E20) and cloths (E120). Wear
gloves (E186).
1.1.
Remove and discard spring (2.1) from within
seal (3).
Wear Kevlar gloves when handling
heated parts.
2.
Heat seal seating surface (1) to 230º to 250ºF
(110º to 120ºC). Use a gun-type heater and a
pyrometer. Wear Kevlar gloves (E187).
3.
Install seal (3) in slider shaft (2), flat side down.
Use drift.
4.
Install retaining ring (4).
FOLLOW-ON MAINTENANCE:
None
END OF TASK
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