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re seating a ball??

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Terry Chapman01/11/2018 14:12:18
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97 forum posts
14 photos

Hi,Ive got water coming into my oil box and had a look look at the one way valve and it seems the balls not sealing?

Whats the best way to re seat bearing (excuse the pun) its about 1/8" diameter.

Its off my 1" Minnie.

Thanks

RevStew01/11/2018 14:39:25
87 forum posts

Brass pin punch onto the ball and a sharp tap with a hammer works for me.

Terry Chapman01/11/2018 14:56:47
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97 forum posts
14 photos
Posted by RevStew on 01/11/2018 14:39:25:

Brass pin punch onto the ball and a sharp tap with a hammer works for me.

Thanks,Ill give that a go?

HOWARDT01/11/2018 15:04:06
1081 forum posts
39 photos

Preferably use a new ball after re-seating as per RevStew.

mechman4801/11/2018 15:52:57
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2947 forum posts
468 photos
Posted by RevStew on 01/11/2018 14:39:25:

Brass pin punch onto the ball and a sharp tap with a hammer works for me.

+1 … always seems to be the preferred method.

George.

Dalboy01/11/2018 17:11:13
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1009 forum posts
305 photos

Another way to do this is to solder a new ball onto a small shaft and apply very fine grinding past or burnishing cream and lap it as you would a car valve then replace the old ball with a new one after cleaning out

Nigel Bennett01/11/2018 18:07:17
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500 forum posts
31 photos

If the seat's not in too bad nick, you could also try a nitrile ball - Polly sell them. I've had a lot of good results with them.

Jon Lawes01/11/2018 20:06:48
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1078 forum posts

I'm tempted to try a nitrile ball in my water pump if only because it might help with the quality of my workmanship so far...

Terry Chapman04/11/2018 13:50:28
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97 forum posts
14 photos

I done the 'Tap' job and is all fine now thanks

RevStew06/11/2018 19:40:28
87 forum posts

I've used that technique on hydraulic systems running up to 720bar. Now here's a thing. I wonder if such an arrangement would be more likely to leak with more pressure, or less pressure?! Anyone care to hazard a guess?

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