Advice on an oil leak 1979 900 Replica

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Blacklightning
Diana
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Advice on an oil leak 1979 900 Replica

Post by Blacklightning » Sat Mar 12, 2016 1:12 pm

Evening All,

I awoke number 146 from 6 month slumbers with a ride today. I am losing a little oil from the front cylinder bevel tube. It's dropping/spraying onto the exhaust header pipe. She was oil tight post build and for 4000 miles. I'm guessing a seal has dried out a bit. Any advice on things to try beyond running her for a hundred miles to see if it stops?

Stuart

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Craig in France
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Re: Advice on an oil leak 1979 900 Replica

Post by Craig in France » Sun Mar 13, 2016 2:33 am

Hi Stuart,

This is a real 'get-over', and if anyone asks, I'll deny any knowedge of it :-D . But ...

John Wittmann had a trick for dealing with this on the singles, so I don't see why it shouldn't apply to a twin. Try a thin smear of clear silicone around the tube where it enters the bearing holders, top and bottom.

Otherwise, it's head off and change the O-rings, I fear ... :evil:

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Blacklightning
Diana
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Re: Advice on an oil leak 1979 900 Replica

Post by Blacklightning » Sun Mar 13, 2016 6:57 am

Hi Craig,
You know, I thought about that myself..... :idea: :idea: :idea:

So it's gotta be worth a try.....

Coz the alternatives a bit of a pain isn't it.

Cheers for that.

Stuart

wdietz186
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Re: Advice on an oil leak 1979 900 Replica

Post by wdietz186 » Sun Mar 13, 2016 5:03 pm

Stuart, Before you smear silicone everywhere [messy] try turning the tubes back and forth a bit. I've done this on my bevels before and it has worked. I used a pair of soft jawed pliers [plumbing pliers if I remember] that I ground thinner to grip the tube . Alternatively I think a pair of hose gripper pliers [look like needle nosed but the ends are bowed out to form a circle] with a strip of rubber or leather would work better as they are thinner. I suspect the o rings shrink and pull away from the tube and the movement re seats them.

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Craig in France
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Re: Advice on an oil leak 1979 900 Replica

Post by Craig in France » Mon Mar 14, 2016 12:47 am

wdietz186 wrote:Stuart, Before you smear silicone everywhere [messy] try turning the tubes back and forth a bit. <snip>
"Good thinking, Batman ..." :-D

Blacklightning
Diana
Posts: 62
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Location: Gerrards Cross

Re: Advice on an oil leak 1979 900 Replica

Post by Blacklightning » Mon Mar 14, 2016 10:17 am

Many thanks I'll try that first. I'll give it all a good clean down and rotate, then go for a ride.

Thanks for suggestions. I'll keep you posted. :-D

Stuart

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