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  1. #1
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    Bleeding Magura Louise Brakes

    was looking on the web last week and found these instructions to bleed Magura Lousie brakes.

    8. Make sure the reservoir is completely full and re-install the reservoir membrane and cap with torx screw.
    9. Important step - Place the pads back in the caliper, but do not secure them. Take the caliper fitting screws completely out of the mounting tabs so the caliper is free. Now re-install the wheel with the rotor. Place the caliper with pads on the rotor without fitting screws. Push fluid into the system with the bleed syringe still attached to the caliper. Stop pushing on syringe when you feel resistance. This will set the pistons/pads on the rotor for the particular pad wear and put the maximum amount of fluid in the system. 8. Make sure the reservoir is completely full and re-install the reservoir membrane and cap with torx screw.
    9. Important step - Place the pads back in the caliper, but do not secure them. Take the caliper fitting screws completely out of the mounting tabs so the caliper is free. Now re-install the wheel with the rotor. Place the caliper with pads on the rotor without fitting screws. Push fluid into the system with the bleed syringe still attached to the caliper. Stop pushing on syringe when you feel resistance. This will set the pistons/pads on the rotor for the particular pad wear and put the maximum amount of fluid in the system.


    The above is what you do near the end of the bleed. However it tells you to push oil back into the system. When i did this tonight and took the syringe out the oil came straight back out of the opening. This meant when i put it all back together the brake lever was similar to when i started. Any ideas as i still dont have a very good brake lever and have to pull some distance before it engages?

  2. #2
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    My own procedure for bleeding Magura brakes is a little different from the steps that you have listed above...

    However, to address your query, what you are meant to do is keep pumping the mineral oil into the caliper with the syringe whilst you secure the rubber membrane and cover back onto the lever at the same time.

    What I do is wrap tissues around the lever to catch drips and spills. Then pump oil into the system until it is just about to overflow out of the reservior. At this point, I put an elastic band onto the syringe so that it maintains pressure and lightly pushes oil into the system - this leaves both of my hands free to fit the rubber membrane and screw in the cover.

    Atmospheric pressure will keep the oil in the system whilst you unscrew the bleed tube and refit the metallic plug back into the caliper. There will be spills at the caliper, so use lots of tissues and take care not to contaminate the pads.

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