Forum home Mountain biking forum MTB workshop & tech

Shimano brake bleeding clarification

revmattrevmatt Posts: 75
edited December 2014 in MTB workshop & tech
Some advice please!

I have 3 sets of Shimano Hydraulics, all recent.

x2 sets 2014 Shimano deore
x1 set 2014 XT M785

I was always told to bleed from the caliper UP the system.

I.e. connect the syringe/hose to the caliper and push mineral oil up through the system either into the yellow cup at the lever end.

However the Park method on their website (about 2/3rds down the page) seems to suggest you begin by bleeding from the lever DOWN the system expelling air out the bottom of the system at the caliper end.

Does anybody have any recent experience with this or advice to offer?

Am I still ok to proceed bleeding bottom to top (caliper to lever) as I have always done as it seems to be the simpler method?

My thanks in advance



  • The RookieThe Rookie Posts: 27,811
    The Shimano techdocs tell you how to do it, bleeding down as they advocate using the funnel reduces the small chance of a trapped bubble at the calliper that they used to have (apparently), though if the up works for you.....
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.
  • nicklousenicklouse Posts: 50,675 Lives Here
    revmatt wrote:
    I was always told to bleed from the caliper UP the system.
    yes that is how some of the early brakes were advised to be bled in their tech docs.

    but not every brake is done the same.
    download and read the info for your brakes.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • cooldadcooldad Posts: 32,599
    Get a kit from Epic and follow their instructions.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

  • cooldad wrote:
    Get a kit from Epic and follow their instructions.

    ^^ This
  • Thanks all for your advice!
Sign In or Register to comment.