TM 1-1520-238-23
5-208.16
Change 5
5.46C.
MAIN ROTOR LOWER BEARING GREASE REPACKING (AVIM) – continued
c. Pack grease on bearing rollers to top edge of
inner race. Use grease (item 87, App F).
d. Inspect (QA).
e. Install main rotor lower seal and oil seal re-
tainer in main rotor hub (para 5.46).
WARNING
The main rotor head weighs approxi-
mately 675 pounds. Use crane to lift
rotor head. Failure to do so can result
in serious injury. If injury occurs, seek
medical aid.
f. Turn main rotor head over on work bench.
CAUTION
Make sure that the spacer being installed
is the same one that was removed. If the
spacer is lost or damaged, the main rotor
head must be serviced at depot.
g. Install spacer (1) in upper bearing cavity of
main rotor hub (2).
h. Install main rotor upper bearing inner race/
rollers (para 5.46B).
i. Inspect (QA).
END OF TASK
1
2
M04-5196-9
2
1
