Heli-Max HMXE08 Manual - Manual (Page 23)

23
Replacing the Main Gear
The Novus Huey uses an inner solid main shaft and a hollow outer main shaft.
To access the main rotor gears it will be necessary to remove the landing gear
fi rst. Remove the lower main gear retaining screw. The lower gear will simply
drop down off the main shaft. If you need to replace the upper main gear, slide
it down off the main shaft and reinstall the new gear, ensuring that the fl at
spot molded inside the gear aligns with the main shaft. Reinstall the lower
gear, ensuring that the screw aligns with the fl at spot machined on the inner
main shaft.
Replacing the Main Shaft
The Novus CX uses an inner solid main shaft and a hollow outer main shaft.
Remove the lower main gear retaining screw. When performing the following
step please be careful not to lose any small bearings or bearing blocks. Slide the
inner shaft and upper rotor head from the outer main shaft by pulling upwards.
If you need to remove the lower shaft, disconnect the servo linkages from the
swashplate and pull upwards. Transfer necessary parts from the old shaft to the
new shaft and install following the reverse order listed above.