Magura brakes

[AndySV1K]

Hi,

Some may have read about me rebuilding my 856 over the last few months and also my tales of magura racelines that needed constant TLC to keep them going.  I was concerned that if i reused the maguras on the rebuild, i would end up with the same problem of struggling to keep them airtight.

Well guess what, after a month of running the bike, the front brake is going squishy! if i adjust the flower right in, the lever goes right to the bar.

Its going to need a strip and bleed again.

My question, has anyone ever tried using PTFE on the connections?  My concern is whether the mineral oil will affect the PTFE.

I need to do something to keep that fluid in!  Its got brand new pipes and connections and i was SO careful when doing the rebuild so as to get all air out and make good connections.  its worked ok on the rear as far as i can tell, but the front has failed.

I think i must have a dodgy caliper thread or something.

Andy.

[shovelon]

If you are referring to teflon tape, it should work fine.

[Colin]

That's a real shame; the HS-11's on my XP-X have been trouble free since brand new in '97 {Gloat}
Hmmm...............That's asking for trouble then isn't it!...............

I have always found the company Magura to be very helpful and I think that there is a user forum on their web site as well .
Maybe you can find some specific assistance there?

Col.

[IMO]

HS-33's on mine, Had a squishy lever too. It was the piston seal that had failed , and every time I braked a tiny amount of fluid let by. Got it sorted by Magura ( via LBs) for next to nothing. All fine now , as fro the ptfe  it will probably be fine.

[AndySV1K]

Thanks for the replies.

Im pretty sure that its the front calipers that are the problem, they are covered in a mix of black rubber powder and mineral oil! 

I probably dont need to call sherlock holmes for this one! 

I do need to find a way of stopping my front brake being incontinent though.  I think i'll try the PTFE and see how it goes.

Perhaps i should contact Magura and see what they say about it, if they are good to deal with its got to be worth a shot.

Andy.

[kiwi]

Thanks for the replies.

Im pretty sure that its the front calipers that are the problem, they are covered in a mix of black rubber powder and mineral oil! 

I probably dont need to call sherlock holmes for this one! 

I do need to find a way of stopping my front brake being incontinent though.  I think i'll try the PTFE and see how it goes.

Perhaps i should contact Magura and see what they say about it, if they are good to deal with its got to be worth a shot.

Andy.

i wuld say its almost certainly the piston seals a mentioned above.If oil can get out,air can get in.