Weeping rear brake bleed nipple. - SV650.org

5hort5 · 01-03-10, 11:27 PM

Title says it all really, apart from being broken down on the slip road of J22 M6 I was on a test flight and noticed a couple of things, the first being a nice pool of oil collecting under the bike, this is simple it's the clutch cover that every time I try and fix I make it worse. The second was a very small leak and from the rear brake bleed nipple.

Now what to do about it??? It's torqued to the 7.5nm but should I:

Tighten it more (till it snaps lol)
Replace the nipple
Put some PTFE tape (or brake equivalent) on it and put it back in
Other

Many thanks for the input

02-03-10, 01:25 AM

try releasing it a few times then tighten it to torque, it should be ok.
if not get a new one.

yorkie_chris · 02-03-10, 08:49 AM

PTFE tape will not work. Bleed nipples seal on the cone on the end, not the threads.

I'd agree with rotax.

Spanner Man · 02-03-10, 09:32 AM

Good morning all.

If you have any corrosion on the tip of the bleed nipple you can get a leak. Take it out, & wire brush the tip (sounds painful). The see how it goes.
It'll help if you have an M7x1mm bolt with some PTFE tape around it to insert into the nipple threads to stop it leaking while you do the above.

Cheers.

yorkie_chris · 02-03-10, 09:34 AM

Or just hang something off the lever, you will lose a little bit of fluid but will close the transfer port so it doesn't dump the whole contents of the reservoir.

johnnyrod · 02-03-10, 02:55 PM

Quote:

Originally Posted by yorkie_chris

PTFE tape will not work. Bleed nipples seal on the cone on the end, not the threads.

I'd agree with rotax.

Yep, possibly a bit of grit or something hard trapped in the cones so it's not shutting off (assuming it isn't scored)

5hort5 · 02-03-10, 07:38 PM

Excellent thanks, are the bleed nipples at the front and rear the same size? I have a few kicking around so I could stick in one of them if they are?

Spanner Man · 02-03-10, 08:12 PM

Good evening all.

Somewhat correcting my earlier post ahem! If your bike is a Curvy all the bleed nipples will have a 7x1mm thread.
If you have a Pointy, the front calipers will have a 7x1mm thread. The rear will be an 8x1.25mm thread.

Cheers.

5hort5 · 02-03-10, 08:27 PM

Thanks spanner man, sounds like a job for Thursday, bit of fishing tomorrow me thinks

01-03-10, 11:27 PM	#1
5hort5 Member Join Date: May 2006 Location: Newcastle Posts: 872	Weeping rear brake bleed nipple. Title says it all really, apart from being broken down on the slip road of J22 M6 I was on a test flight and noticed a couple of things, the first being a nice pool of oil collecting under the bike, this is simple it's the clutch cover that every time I try and fix I make it worse. The second was a very small leak and from the rear brake bleed nipple. Now what to do about it??? It's torqued to the 7.5nm but should I: Tighten it more (till it snaps lol) Replace the nipple Put some PTFE tape (or brake equivalent) on it and put it back in Other Many thanks for the input

02-03-10, 01:25 AM	#2
rotax81 Guest Posts: n/a	Re: Weeping rear break bleed nipple try releasing it a few times then tighten it to torque, it should be ok. if not get a new one.

02-03-10, 08:49 AM	#3
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Weeping rear break bleed nipple PTFE tape will not work. Bleed nipples seal on the cone on the end, not the threads. I'd agree with rotax. __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

02-03-10, 09:32 AM	#4
Spanner Man Member Mega Poster Join Date: May 2005 Location: Sunbury Middlesex Posts: 1,396	Re: Weeping rear break bleed nipple Good morning all. If you have any corrosion on the tip of the bleed nipple you can get a leak. Take it out, & wire brush the tip (sounds painful). The see how it goes. It'll help if you have an M7x1mm bolt with some PTFE tape around it to insert into the nipple threads to stop it leaking while you do the above. Cheers. __________________ Spanner Man http://stewarts-motorcycles.co.uk/default.html

02-03-10, 09:34 AM	#5
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Weeping rear break bleed nipple Or just hang something off the lever, you will lose a little bit of fluid but will close the transfer port so it doesn't dump the whole contents of the reservoir. __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

02-03-10, 07:38 PM	#7
5hort5 Member Join Date: May 2006 Location: Newcastle Posts: 872	Re: Weeping rear break bleed nipple Excellent thanks, are the bleed nipples at the front and rear the same size? I have a few kicking around so I could stick in one of them if they are?

02-03-10, 08:12 PM	#8
Spanner Man Member Mega Poster Join Date: May 2005 Location: Sunbury Middlesex Posts: 1,396	Re: Weeping rear break bleed nipple Good evening all. Somewhat correcting my earlier post ahem! If your bike is a Curvy all the bleed nipples will have a 7x1mm thread. If you have a Pointy, the front calipers will have a 7x1mm thread. The rear will be an 8x1.25mm thread. Cheers. __________________ Spanner Man http://stewarts-motorcycles.co.uk/default.html

02-03-10, 08:27 PM	#9
5hort5 Member Join Date: May 2006 Location: Newcastle Posts: 872	Re: Weeping rear break bleed nipple Thanks spanner man, sounds like a job for Thursday, bit of fishing tomorrow me thinks

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