Forum home Mountain biking forum MTB workshop & tech

Shortening the hose in pre bled disc brakes.

freshefreshe Posts: 63
edited June 2013 in MTB workshop & tech
Hi,

I need to shorten hoses in my pre bled shimano slx set and Im not sure how to do it without letting the aur getting into the system.

Found this video http://youtu.be/Bpdw2TpYDhM

Can this be done without need of bleeding the brakes? On this video that guy inserts a metal pin in the hose - I only have one of those - cant remember with which brake it came. Do I need that pin for both brakes tho? How do you cut hose ? With stanley knife or can I use park tools cable cutters ? I have some yellow plastic parts for what I presume is needed to do that kind of job.

I checked shinanos website but theres no instruction there. The video is the only one I could find. I also read on CRC in some review that these hoses can be shortened without need for bleeding the brakes,

Posts

  • nicklousenicklouse Posts: 50,675 Lives Here
    Most people need to bleed the brakes after shortening he hoses. Shimano do have a guide in the tech docs on how it can be done but most people fail and still have to buy a bleed kit.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • sniper68sniper68 Posts: 2,910
    freshe wrote:
    Hi,
    Can this be done without need of bleeding the brakes? On this video that guy inserts a metal pin in the hose - I only have one of those - cant remember with which brake it came.
    The "pin" is the re-useable barb and both brakes/hoses have them and will not work without it.
    As Nicklouse said hoses can be shortened without bleeding but many people seem to make a mess of it :|
  • cooldadcooldad Posts: 32,599
    Re-useable maybe. Easier to get new ones.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • YeehaaMcgeeYeehaaMcgee Posts: 5,740
    ibbo68 wrote:
    freshe wrote:
    Hi,
    Can this be done without need of bleeding the brakes? On this video that guy inserts a metal pin in the hose - I only have one of those - cant remember with which brake it came.
    The "pin" is the re-useable barb and both brakes/hoses have them and will not work without it.
    As Nicklouse said hoses can be shortened without bleeding but many people seem to make a mess of it :|

    I'd always advise to bleed the brakes if you've interrupted the hydraulics in any way, it's never a bad idea.
  • hard-riderhard-rider Posts: 460
    Can be done and is not difficult at all. Just be careful and take your time. I just did it to my new SLX brakes today and took less then 40mins to do both. Followed this document

    Yes you can cut the hose with a Stanley knife, I did, just make sure you keep the hose vertical. No fluid dripped from my levers when I did it. All went together fine and levers feel good and firm. On the front brake I had to crack open the bleed port on the lever to let a little fluid out to otherwise I wasn't able to push the pistons back into the calliper.
Sign In or Register to comment.