450 Bearing question

[treff]

Could anyone tell me how difficult it is to change the main shaft bearings on a 450. It something I have never done but I noticed some scoring on
the main shaft at the bottom bearing so thought I would take them out. Any help would be appreciated. Cheers and thanks in advance.

 

[Tony]

They are pretty easy. Might have to head the block up to get them out, but they should press right out.

 

[Lee]

Yep, super easy. just press them out.

 

[Graham Lawrie]

Ditto very easy Treff

 

[treff]

Thanks very much to all. I will send for some. My main shaft is very scored at the bottom bearing and I have a strange wobble every now and again that looks
like it could turn serious so I will send for spares in the morning from Align. I will give then a ring and make sure their bearings fit into the HK block. Thanks again.
I think this is the first part that as actually worn out on a heli i own instead of being destroyed on impact so must be getting better LOL Cheers

 

[coolgabsi]

If they are gritty... Change them...

And you can get them out easy like every one said.

 

[treff]

Thanks to all for info. Yes easy job to do. Now changed out but still got a bit of a wobble. I think the belt as a worn tooth or teeth causing a slight wobble. I have changed everything else lol.
Thanks again lads. Cheers

 

[murankar]

If this is on a T-Rex 450 pro (belt version) designed kit then I would check the front tail case pulley. This would be the one that has the gear on it. Check and make sure that is straight and not bent.

 

[treff]

Thanks murankar I will have a look at this, last thing on the heli to change lol. Its the slightest of wobbles and not all the time which is the puzzling thing. Cheers

 

[murankar]

I had that happen to me on my EXI 450 pro. Unfortunately I grounded it before I could fix it.

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