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Thread: Removing ATE front brake caliper

  1. #1

    Removing ATE front brake caliper

    On my 1974 R 90/6, I want to replace the piston in the front caliper. After removing the cap in the bottom of the caliper, to remove the caliper, the adjustment/mounting bolt is exposed, but when turned, it doesn't come out. Help!

  2. #2
    Liaison 20774's Avatar
    Join Date
    Sep 2005
    San Antonio, TX
    Newt -

    Welcome to the forum! I believe the pinch bolt for the front axle is the right thread size to screw into the bottom of the eccentric adjuster for the brake caliper. Screw that in and use it to grab onto to pull the adjuster out. It's probably a little dirty in there but should eventually come out. Should be an M8 bolt.
    Kurt -- Forum Liaison ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  3. #3
    Sir Darby Darryl Cainey's Avatar
    Join Date
    Mar 2003
    Fenwick, Ontario Canada
    Just to clarify, the eccentric adjuster you want to pull out doesn't unscrew it will turn 360 degrees.

    You have to pull it straight out the bottom, what I do is like the last post with the pinch bolt.

    If it won't come easily put a small box wrench under the bolt and tap the wrench with a light hammer.

    Good luck!
    Ambassador Emeritus BMW MOA Ontario Canada
    Niagara Riders
    Knights of the Roundel #333
    1977 R100RS, (Retired) 1993 R100GS

  4. #4
    Thanks, guys. It worked. Now for the piston removal, new piston and new seal.

  5. #5
    Join Date
    May 2003
    Manitowoc, Wisconsin
    And then after that comes the reinstallation, fill and vent, then aligning the caliper on the rotor.
    F.O.G.Rider, Rounder #6,
    Ambassador, WI Airmarshal
    BMWRA Wisconsin Region Rep

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