CENTRIFUGAL DROOP STOP FUNCTIONAL CHECK
Balancing arms must move freely
when blade is raised. Fuselage can
be damaged if there is interference
with balancing arm operation.
Move balancing arm (7) outward as far as it
will go. Check that spring (8) is clear of other
parts. There shall be no interference with spring
Check pivot bearing (9) for binding. There shall
be no binding.
Check for interference at interposer block (6).
There shall be no interference.
Check that there is clearance between balancing
arm pivot lugs (10) and bottom of hub (11). If
there is clearance, go to step 9. If there is no
clearance, perform steps 7 thru 8.
Remove centrifugal droop stop assembly (Task
Remove enough metal from top of lugs (10) to
provide clearance. Use smooth file.
Finish reworked area of lugs (10) as follows:
Alodine (E65) is an oxidizer. Discard
cloths which contain this material in a
separate container. If discarded with
cloths contaminated with acetone,
MEK, or other organic solvents,
combustion can result. In case of
contact, immediately flush skin or eyes
with water for at least 15 minutes.
Get medical attention for eyes.
Mix 3 ounces of alodine powder (E65) with
1/2 ounce of concentrated nitric acid (E22).
Add mixture to 1 gallon of water.
Apply alodine solution to reworked area of
lugs. Wear gloves (E184.1).
Rinse surface with cold water and let air dry.