Magura mt6 leaking banjo help

[ishaw]

Fitted a set of brakes to my build yesterday, what a pain. Bought them ages ago and only just got round to fitting them and discovered the banjo on the rear is leaking. Took it apart and found the rubber o-rings had perished, handily I thought I had the right ones to replace them with but after fitting and bleeding, initially it looked as though I'd solved it. However, overnight, there appears to have been a little leak. So, what gives? Maybe the o-rings I've used are not the right size? If so, what size do I need?

Also, the rear hose doesn't have the stamped on banjo, it has a separate one with a connecting clamp. Previous owner must have budged this as there was no barb in the hose and a badgly mis-shapen bronze olive. I replaced that with a new olive and fitted a new barb. Assume it needed one, but not 100% sure.

Anyone help with either issue?

I can pinch another hose off a spare brake I have, but want to know what I'm doing before deciding.

I have an older set of mt6 on another bike and never had a problem with them, this set is fighting me all the way, which is annoying as I was hoping to finish the build this weekend barring fitting the reverb and chain, as awaiting a new chainring.

Thanks

 

[mdvineng]

If it's only a small leak, it could just be residual fluid from before.

 

[ishaw]

Re:

I did wonder about that, so have given them a further clean and will check again.

Just need to true the rotor now.

 

[ishaw]

Re:

Damn. Still leaking. Bigger o-rings needed?

 

[dan28]

Not sure it will work but could you use copper washers instead of o rings

 

[ishaw]

Re:

Willing to give anything a try as I should have the remaining parts by the weekend to get it built.

 

[ishaw]

Re:

Finally sorted. Swapped the rear hose for one off a spare brake. Initially leaked but that was my fault. Thought there weren't o-rings so fitted some, leaked. Took apart, realised my mistake and removed the extra o-rings. Sorted.

Just need new pads now as leak contaminated them and they squeal like a pile right now.

Build almost finished too. Have a temporary saddle and post as was planning a dropper but not sure there is enough space to fit the saddle and get it at the right height with the dropper at full height. Maybe need to rethink that plan.

 

[Bullpup]

Give the pads a good spray of brake cleaner and gently clean the surface with wet and dry paper / emery board or at a pinch cement floor.