TM 55-1520-240-23-1
1-90
LUBRICATE SWASHPLATE
(Continued)
1-90
NOTE
Lubricate forward or aft swashplate
in the same way.
1.
Using a clean lint free cloth (E134.1) dampenend
with cleaning solvent (E471), clean the inner
ring assembly and the outer ring assembly at
the upper seal (2 and 3). Wipe dirt and grease
from lubrication fitting (1). Ensure all surface grit,
sand, and other foreign materials are removed.
Rotary-wing blades can seriously
injure personnel. Make sure area
around helicopter is clear of personnel
before turning blades.
Pumping grease into swashplate
without turning rotating ring can result
in bearing damage.
NOTE
If you cannot pump and turn at the
same time, turn ring in 12 equal
steps, 30° each step. Pump in grease
between steps.
2.
Have helper rotate ring (4) by pulling blades
around with tiedown line. As ring rotates, pump
grease (E190) into fitting (1). Use a hand
lubricating gun with a flexible coupling.
NOTE
A minimum of 16 ounces of grease
must be used to adequately purge
grease from the swashplate.
3.
Pump until clean grease appears all the way
around the line between stationary seal (2) and
rotating seal (3).
4.
Wipe grease from fitting (1) and between seals
(2 and 3).
5.
Feel for metal chips in seal grease. If there are
chips, replace swashplate (Tasks 5-115 and
5-132 or Tasks 5-116 and 5-133).
NO BREAK - WORK HARDER
NO BREAK - WORK HARDER
FOLLOW-ON MAINTENANCE:
Close left forward transmission fairing (Task 2-2).
Close left pylon work platform (Task 2-2).
END OF TASK
1-324 Change 1
