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I have an old Magura Julie disk brake. It seams that new pads are too thick for the brake. I already tried 2 different types. But when I insert the new pads the gap between the pads is completely closed. There's no gap left for the disk.
Re-inserting the old pads is no problem.
Are there brake pads with different thicknesses?
Did you push the pistons back into the callipers?
Hydraulic brakes automatically adjust for pad wear and the home position of the pistons moves slightly out. When you change pads you need to gently push the pistons back in gently with something like a plastic tire lever to return the fluid to the reservoir, then pump the lever to set the correct level of adjustment for the new pads.
I solved this by inserting the new brake pads even though they were pressed together tightly, then twisting a flathead screwdriver between the metal outer edges of the pads, forcing them apart a bit. Then I used the small gap between the pads to wedge a big flathead screwdriver between them (carefully), which completely pushed them apart and reset the calipers. This was the only way I could get enough leverage to reset the calipers with limited tools, even though the screwdriver does slightly damage the resin on the pad. Wasn't an issue for me.
Are there brake pads with different thicknesses?
No. You need to reset your pistons before installing the new pads.
Just fixed the exact same issue. Drilled with 1.5 and 2mm, then used flathead with enormous pressure. Even with the poorly cut out head I managed to get it out. My trick was to put really a lot of force on the screw.
