Periodic Maintenance N178MT

UIH,

N178MT, a Vario MD 900, is in the RCHeliwerks shop for maintenance. After an incoming inspection, it was time to pull the main gear box assembly for better access and inspection of the rotating parts. After the MGB was removed and the assembly visually inspected, it is in great shape. We will get a better look at the assembly over the weekend.

Here are some pics of the removal of the MGB and the interior structure that was custom made to support the e-conversion.

Thanks for dropping by.

Enjoy,

Butch.

UIH,

Moving right along with this inspection, This machine has been flying flawlessly for many years. I did run across a couple of things that will be addressed. First is the slop in the rotating scissors. Not terrible but will be addressed. Installing a new ball raced scissor assembly that will remove all the slop in the assembly.

There is a self aligning bearing that supports the lower end of the impeller mounted to the underside of the impeller housing. Again not bad, but while apart an each replacement. Everything else looks great. Parts are ordered and on the way. Once all is reassembled, have a few exterior item to address and will be ready for MTF then back to the owner.

Check out the short vid,

Butch

UIH,

Been chugging away on the MD900. The new replacement head arrived last week along with the swash follower and replacement self aliening bearing for the lower end of the impeller shaft. Over the weekend, I was able to get everything installed and work on some wire management. The use of tie string over ty-wraps looks much nicer. A little more work but worth it in the end. Still need to go though post maintenance check, some exterior work and minor paint work then back to the owner.

A few pics from the service.

Nice Jesus bolt. 😳

UIH

B