What is the function of these screws on the brake pad cartridge?
01-08-24, 01:08 PM
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What is the function of these screws on the brake pad cartridge?
Shimano BR-9000. It is not explained in any of the Shimano manuals I’ve seen.
01-08-24, 01:30 PM
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They engage a slot in the pack of the pad, locking it in place so it can't slide out if you apply the brake while rolling the bike backward.
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01-08-24, 01:46 PM
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01-08-24, 02:02 PM
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Logically I'd expect the guide to be formed extending inward for that reason, but wonder if the screw was added as a correction after reports of shoes coming off.
OTOH an extended guide might become a problem as shoes wear, while the screw could be removed if/when necessary.
Last edited by FBinNY; 01-08-24 at 02:09 PM.
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01-08-24, 02:59 PM
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Shimano refers to it as a ‘tire guide’ on the exploded diagram, but doesn’t address adjustment in the owner or dealer manual.
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01-08-24, 06:02 PM
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They also act as "squealers" when the pads get worn down to cue the owner that it is time to change the pads. At least that's been my experience maintaining Mrs. Base2's winter commuter bike.
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01-08-24, 07:16 PM
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I wish it was this easy to remove worn brake pads! I had to use pliers to pull out the Shimano R55C4 pads in my calipers before installing CF specific brake pads.
01-08-24, 10:05 PM
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Eons ago, I modified an oyster knife, to make a pad remover. I guide or tap it in under the pad, and a quick twist pops it free.
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An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
01-08-24, 10:58 PM
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01-08-24, 11:01 PM
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01-09-24, 04:51 AM
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Never had a problem just hooking a thin hex key in behind the pad and pulling straight.
Last edited by choddo; 01-09-24 at 05:18 AM.
01-09-24, 05:27 AM
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