CHECK ROTARY-WING BLADE PHASING
Make sure foward and aft blades do
not collide. Damage to blades can
Rotate rotary wing heads (1 and 2) to position
one blade forward on each head.
Use only swiveling actuators to phase
blades. Do not use pivoting actuators.
Improper phasing will result.
Swiveling actuator is on left side of
forward head and right side of aft
Have helper rotate blades to align one forward
pitch link (4) with upper mounting lug (5) of
swiveling actuator (6). Install phasing block (7)
around link and lug. Check that one blade (3) still
points forward. Maintain forward phasing block in
Install phasing block (7) around aft pitch link (8)
and upper mounting lug (9) on swiveling actuator.
Check that one blade (3) still points forward.
If you cannot install both phasing blocks (7)
aircraft rotor system must be re-phased (Task
6-28). If both phasing blocks (7) are installed
properly proceed to step 5.
Remove two phasing blocks (7) foward and aft.
Rotate blades three complete revolutions in the
leading direction. Check phasing by installing
two phasing blocks as in steps 2 and 3. Remove
Close forward transmission fairing left work platform
Close aft pylon work platform (Task 2-2).
Remove tiedown lines from rotary-wing blades (Task
END OF TASK