View Full Version : *^$%£$& Brake Nipples
When is someone going to design a replacement for Brake Bleed nipples?
I needed to bleed the rear brakes on my van today and as soon as I touched the nipple it sheared off. Soft as butter! SO off came the caliper, into the garage (in 12 inches of snow!) as tried the stud extractor. No joy! So drilled it out and tried a bigger stud extractor.. no Joy! heated it, cooled it, used every free-ing agent known to man... Nothing
What was supposed to be a 10 minute job has now turned into an epic voyage to try and find a new nipple on a Sunday, drill out the old one, fit a stud, drill that out and retap the thread for the proper nipple.
I wish there was a different solution to the useless things!
Today was supposed to be spend checking the valve clearances on the bike and it's been wasted on the bloody van! :mad:
Rant over.
C
CheGuevara
30-01-10, 11:00 PM
http://www.demon-tweeks.co.uk/products/ProductDetail.asp?cls=MCYCLE&pcode=GDRBN704SB
welcome to my world, but at least mines the bike, but pain, so much pain, I feel for you.
tigersaw
30-01-10, 11:10 PM
Just read up on speed bleeders, never heard of them. Seems you still have to undo them to bleed brakes, its just they have a valve inside to stop air getting back into system
CheGuevara
30-01-10, 11:15 PM
Just read up on speed bleeders, never heard of them. Seems you still have to undo them to bleed brakes, its just they have a valve inside to stop air getting back into system
That's true, but I think they're meant to be well made, and if you're going to be replacing one anyhow, might as well add some convenience.
A good m8 and a bit of a bike guru said the way he bleeds brakes was to use a syringe and push the fluid up from the nipple. I'd give it a try if I could find a syringe?
use a long reach socket on the nipple to crack it open before you use a spanner. works every time with me.
Good luck finding all that on the Sunday, if worse comes to worst you could bleed it using the hose..making sure the hose is the uppermost part I think messy but works. I feel your pain I had aluminum 4pots on my mini can't remember the inns and outs but the nipple were steel the two metals fuse together making it impossible to get out resulting in needing new callipers.... The new design has copper ring in between the two metal by the looks of things!
Sid Squid
31-01-10, 02:11 AM
A possible solution:
Click. (http://www.moto-racing.co.uk/item--Single-Banjo-Bolt-With-Bleed-Nipple--Banjo+Single+Nipple.html)
Thanks for the replies! Oh, how I wish this was a banjo fitting!
... It isn't :(
I may well end up just tapping and blanking the nipple and bleeding it via the hose joint. I'll keep you posted.
... Off to swear profusely at it! See if that helps!
C
Dicky Ticker
31-01-10, 09:16 AM
Problem being if you have air in the caliper/cylinder the hose joint is not going to ensure you have it all out---------Surely a scrap yard near you where you could get a same size nipple.
timwilky
31-01-10, 10:40 AM
Dont repeat the mistake of my youth. first road car, I had, I replaced the front calipers. But I put them on the wrong sides. So bleed nipples at the bottom, instead of top.
When ever I tried to bleed them, fresh fluid. But no braking. clamp the hose and rock solid pedal. took me over a week of head/butt scratching to figure it out. but I was only 16.
Trouble is calipers is expensive to replace. rear wheel cylinders etc are just a few quid.
Dicky Ticker
31-01-10, 12:38 PM
Very basic but air rises to the highest point and if the hose union is below this no matter how you try you will not get it out. By design the bleed nipple is usually at the upper part for this reason
aye but if you remove the calliper and turn the calliper the other way round using a bit of wood instead of a disc you can manage just about, not ideal but works
Dicky Ticker
31-01-10, 03:02 PM
Long road for a short cut.It all depends where the brake pipe comes in in relation to the intended bleed point,may work on some but due to different types not on all.
What van does Berlin have?
very good point... and i have no idea!
Fixed! Swearing worked.. along with a lot of engineering.
I had to drill out the old nipple, clean the threads out, find someone that sold new M10 nipples on a Sunday, buy them and cut the thread back in before replacing the nipple.
I never, ever, ever want to do this job again!
Now happily looking into the valves of an SRAD and tinkering contentedly. Bikes are So much better to work on than Iveco vans! :)
C
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