Where do the Metal Washers go?

[Rogue22]

Hi all, I am in the process of stripping down my B450X to repair after a crash. Tail section is good, main shaft and gears are good, it appears that only the landing gear, tail boom, and spindle need to be replaced. Ok, almost forgot, blades, and a collective push rod.

After removing the main shaft to check it, two metal washers fell onto my table. I looked in the manual and exploded drawings, but could not find the same parts. They come with main shaft, but I do not know where they go. Please help me. Does one go above the top bearing block and one below the middle bearing? Or some place else? Here they are:



Thank you for your comments!

Steve

[ahummingbird]

They sit between the top of the top bearing block and the small collar ring on the mainshaft to remove vertical play in the mainshaft. After crash repairs you may need fewer or more of these to get it just right.
Ideally after assembling there should be no vertical play but it shouldn't be tight.
Hope this helps

[Rogue22]

Very helpful information. Thank you for letting me know. I would much rather put it back together the right way and have a potentially longer life span. From your message, I assume that both washers fit directly on top of each other?

Thank you!

[ahummingbird]

Originally Posted by Rogue22

From your message, I assume that both washers fit directly on top of each other?

Thank you!

Yes thats correct, use as many as needed to get it "just right" not sloppy nor tight. If you need more than 2 or 3 I would think something has not gone together correctly.
Glad to help

[Coco66]

I lost them around the second time I ever crashed the B450X then never cared about putting then again. This was almost 400 flights ago.