Pilot Operating Handbook
Cavalon
SECTION 8
HANDLING / MAINTENANCE
AutoGyro_POH_Cavalon 915iS
Revision 1.0 – Issue Date 08.MAY.2019
8-10
8.15.4 Installation of the Rotor System
CAUTION
During installation make sure to have each and every part of the rotor system
installed in exactly the same way and orientation as it was before.
1. Secure the gyroplane on level ground by engaging parking brake, adjust the rotor
head or teeter tower corresponding to 30deg from fore-aft and pressurize the rotor
brake up to maximum.
2. Check correct matching of parts: The rotor hub and the teeter tower are marked with
two dots according to the orientation for installation.
3. Lift the rotor blade with a second briefed person standing at the forward end of the
rotor.
4.
Approach with the rotor system from the side to the gyroplane and make sure not to
collide with propeller or stabilizer. The person fitting the rotor to the aircraft has the
hub bar on his shoulder, and climbs the ladder with the rotor across the aircraft. The
rotor is then lifted over the teeter tower and lowered into place.
5. The second person can let go, as soon as it is resting centrally in the teeter tower on
the teeter stops.
6. Insert teeter bolt by hand in the same orientation as it was before (bolt head should be
at that side of the teeter block which is marked with one dot) while matching the shim
washers with the corresponding installation positions.
7. Check direction of assembly and shim washers: rotor hub, teeter tower and shim
washers are marked on each side either with one or two engraved dots.
8. If the teeter bolt cannot be inserted, tilt the rotor blade along the teeter axis with the
free hand.
9. Install washer and castellated nut. Hand-tighten only, 1-2Nm and secure with a new
split pin. Use split pins only once. Make sure that the teeter bolt can be turned easily
by hand.
10. Check that the rotor teeters freely to the teeter stops, and grease the hub block
grease nipple. Turn the rotor fore/aft and fit tie down bag to secure the rotor.
