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XT Brakes

BazzowmbBazzowmb Posts: 227
edited December 2007 in MTB workshop & tech
Fitted some 2004 XT brakes a couple of months ago and am generally really pleased with them.

My only query is that as soon as you go out in this wet and muddy weather they seem to start rubbing where censored is getting flicked up in between the pads and disc.

I wondered whether I needed to reset them and therefore removed the reservoir covers and reset the pistons at their starting point, they,ve since self adjusted and I seem to be experiencing the same problem.

The gap between the pads and discs is hardly anything and appears to be a really fine tolerance.

My question is whether this is normal and I'm being TOO fussy, or whether I'm missing something :?:


  • supersonicsupersonic Posts: 82,708 Lives Here
    It may be that the piston seals need cleaning and lubing.
  • nicklousenicklouse Posts: 50,675 Lives Here
    i would just use them.

    but you could push the pistons back in and see if they reset with a bit more space, But the lever will have more travel.

    there is a pay off. so have a think.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • I would not worry to much as long as there still working fine. Most disc start to make rubbing sounds if you start riding in the real cack. But it would not hurt just to look the see if the calliper is still in line.
  • BazzowmbBazzowmb Posts: 227
    Cheers guys, will take your advice on board.

    What should I lube the piston seals with?
  • supersonicsupersonic Posts: 82,708 Lives Here
    If this is the cause ie dry seals or dirty pistons. It can mean the pistons fail to retract fully or evenly. You need to remove wheel and pads, and gently (very gently!) squeeze the lever to pump the pistons out slightly. To much and they are a censored to get back in! Clean pistons with plain water and allow to dry. Then lube sparingly with whatever oil the hydraulic line uses. Push pistons back into the bores. Refit pads and wheel and see how you go.
  • BazzowmbBazzowmb Posts: 227
    Cheers Super :lol:
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