REMOVE ROTARY-WING HEAD
Support spring load before removing
bolt. Sudden release of spring will
cause small parts to fly out of lugs.
On aft head only, disconnect centrifugal droop
stop springs (10) and limiter springs (11) as
Remove cotter pin (12), nut (13), and
washers (14 and 15).
Support spring load and remove bolt (16).
Remove spring (10), two washers (17),
bearing (18), and inboard limiter spring (11)
from lugs (19).
Assemble bearing (18), two washers (17),
spring (10) and limiter spring (11). Use bolt
(16), washers (14 and 15), and nut (13).
Do not lift pitch housing when
removing aft head without supporting
balancing arm. Lifting housing will
allow arm to fall against other parts
when springs and limiters are not
connected. Damage to equipment
Lower three balancing arms (20) as follows:
Hold balancing arm (20) in place.
Lift housing (21).
Lower arm (20) slowly until it rests on
weather-protective cover (22).