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02-04-2012, 10:30 AM | #1 |
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Need help HDX450 Feathering Shaft
I've had to replace the feathering shaft on a hdx450, the new assembly came with washers and bearings that were not on the old assembly. Not sure if I have the order of these parts right (see pic) and not certain where the step washer belongs in the setup. Appreciate any help.
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02-04-2012, 11:05 AM | #2 |
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Re: Need help HDX450 Feathering Shaft
Not sure what you are asking? You're photo shows a complete assembly. However it is a good idea to have the small black washer behind the black screw on both sides so nothing can slide down the shaft.
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02-04-2012, 01:09 PM | #4 |
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Re: Need help HDX450 Feathering Shaft
The silver step washers go between the rotor grip(blue) and the main rotor block housing on the shaft to space the grip away from the block so no binding occurs.
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02-04-2012, 02:52 PM | #5 |
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Re: Need help HDX450 Feathering Shaft
Is it grommet then spacer then stepped washer then bearings then thrust bearings then screw?
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02-04-2012, 03:28 PM | #6 |
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Re: Need help HDX450 Feathering Shaft
On the old feathering shaft it was the aluminum collar as shown in the picture that went between the rotor grip and rotor block (o-ring in the block). When they sent me the new shaft it included both the aluminum collar and the stepwasher.
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02-04-2012, 09:27 PM | #7 |
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Re: Need help HDX450 Feathering Shaft
Alex, That stepped washer goes between the grip and the head block with the large diameter on the o-ring (dampener) and the small end on the bearing in the grip.... the aluminum spacer you have is just a different design.... make sure the small diameter of this new stepped spacer touches the inner race of the bearing... some grips have the bearing inset too far for this style to work.... you can use your old spacer too but not both... i think the stepped style covers more of the oring and makes them last longer...
hope this helps Chris |
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02-04-2012, 10:02 PM | #8 |
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Re: Need help HDX450 Feathering Shaft
Chris, I think you're absolutely right. The aluminum collar cuts into the o-ring but the stepwasher face will sit flat against it. I'll still have to use the collar between the screw and thrust bearing otherwise there's slack in the whole assembly.
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