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Discussion Starter · #1 ·
My situation:

- 2014 era XTR trail brakes [M988]
- new hose installed and bled with partially worn pads
- pads got contaminated so replaced them with new pads soon after bleeding
- new pads result in no clearance for rotor and lever bites without any throw

My question is can I reset pistons without removing any oil or since the brakes were bled with the partially worn pads do I need to open the filler port at the lever and then reset pistons so the excess oil can get out of the system?

Thanks in advance for your help.
 

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Reset the pistons and put the bleed block in. Crack the screw at the lever and let out any excess fluid. If you can't reset the pistons far enough to get the bleed block in, crack the screw first.
 

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If unfamiliar, there's way more opportunity to run into issues bleeding the brakes than simply letting excess fluid out of the lever, which is a simple and low risk procedure to let out excess fluid.

In replacing pads, I often found that there was excess fluid in the system due to people having bled them without the bleed block. Letting it out was an easy, quick, simple, and low risk solution.
 
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