TM 1-1520-238-23
5-208.12
Change 5
5.46C.
MAIN ROTOR LOWER BEARING GREASE REPACKING (AVIM) – continued
5.46C.3. Removal
CAUTION
Be sure to keep spacer with same S/N
main rotor head. If spacer is lost or dam-
aged, main rotor head must be returned
to depot.
a. Remove spacer (1) from upper bearing cavity
of main rotor head (2).
b. Remove main rotor lower seal and oil seal re-
tainer from main rotor head (para 5.46).
CAUTION
Use care not to damage or unseat center
seal when removing mast liner/lower
bearing from hub. If center seal is dam-
aged or unseated, the main rotor head
must be serviced at depot.
NOTE
The lower bearing is pressed on the mast
liner.
c. Remove mast liner/lower bearing (3) from
head (2). Gently pull liner/bearing (3) out of head
(2) using care not to unseat or damage center
seal (4).
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