LUBRICATE FLIGHT CONTROL SYSTEM ROD END (ANTIFRICTION)
Grease Gun with Nozzle MS24203-1 or Alemite
Medium Helicopter Repairer
The following procedures shall
be performed carefully due to the
sensitivity of bearing seals.
The rod end bearings that are
located in the pedal box area, flight
cockpit controls, pilot cockpit controls
assembly, and copilot cockpit controls
assembly are not exposed to the same
severe conditions as the bearings
located in the forward pylon, mixing
complex, tunnel area, aft fuselage,
and aft pylon. The pedal box bearings
are in an enclosed protective area
and would be difficult to lubricate the
bearings without removing them from
the aircraft; therefore, theres no need
to lubricate these bearings at the
same schedule as the other bearings.
Rod end bearings located in the pedal box area
shall be lubricated only when the pedal boxes
are removed from the aircraft for other reasons.
Rod end bearings located in the flight control
closet area, forward pylon, mixing complex,
tunnel area, aft fuselage, and aft pylon shall be
lubricated every 1st and 3rd phase inspection.
Lubricate the flight control rod end rolling element
Identify and locate bearings to be
Prior to lubrication, ensure that the grease
gun and nozzle are clean and free of
Fill the grease gun with grease (E190).
It may be necessary to remove some flight
control links in order to obtain access to the
rod end bearing grease fitting.
Clean the exterior of the bearing using a
Cleanliness cannot be over
emphasized with respect to
prolonging bearing life.
Do not remove bearing from rod end
During application of grease, take
care in operating the grease gun so
that you do not over pressurize and
damage the bearing seals/shields.
Operate the grease gun in a slow and
smooth technique during application.
Using grease (E190) and hand operated
grease gun, attach gun and pressurize.
Allow the grease to flow until grease that
exudes out from around the bearing is clean.
If possible, the bearing should be rotated
360º during lubrication.