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  1. #1
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    Need to cut brake hose line on prebleed brakes, will I have to bleed brakes?

    My hoses are too long for my bike. I need to cut them. Will I have to bleed the brakes after I cut the hose?
    When the **** did we get ice cream?

  2. #2
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    Quote Originally Posted by crclawn View Post
    My hoses are too long for my bike. I need to cut them. Will I have to bleed the brakes after I cut the hose?
    it depends on the brakes you have

  3. #3
    dirtbag
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    I've shortened hoses on Magura Marta SL- no need afterwards and Avid X.O elixer - needed bleeding. So yeah, depends on the brake.
    Amolan

  4. #4
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    When the **** did we get ice cream?

  5. #5
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    Shimano you can normally easily get away w/o a bleed.

    Just keep the hoses vertical so you don't lose any fluid.

  6. #6
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    Thanks. I got a bleed kit coming in the mail. Should I just wait until I get it to attempt it? No big hurry to cut.
    When the **** did we get ice cream?

  7. #7
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    I'd wait to be safe. You probably don't need it, but if you slip up it's nice to have the insurance.

  8. #8
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    Quote Originally Posted by crclawn View Post
    Thanks. I got a bleed kit coming in the mail. Should I just wait until I get it to attempt it? No big hurry to cut.
    I'd probably wait . . . that way, if you DO need to bleed, you won't be waiting for the bleed kit.

  9. #9
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    another vote for waiting for the bleed kit just in case....

  10. #10
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    Should be no probs, I've shortened Shimano, Hayes & Avid.
    Get all the bits ready, unbolt @ H/bar, shorten, reattach. If a tiny bubble has entered, gentle squeezing of the lever allows it to escape into the reservoir. Usually not needed.
    Don't cut too much........

  11. #11
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    If yer smart, no, you won't. Reset the caliper pistons by removing the pads and pushing the pistons all the way back into the caliper body. This puts the diaphragm in the reservoir in it's neutral state, it won't draw air into the master cylinder. Keep the hose port up to 12o'clock while you shorten your hose and insert the new compression olive. Top the port off with Shimano mineral oil and thread the compression nut back into the port, keeping the port at 12. Some of the mineral oil will weep out as you do this. That is fine. You want to keep the system flooded so to speak to prevent any air from getting ingested in the mc. Once the comp nut is tightened down enough so the hose doesn't twist unless you reeeeeeallly torque on it, you're done. Clean it up, install the pads, mount it to the bike, and check the engagement.
    You are not what you own.

  12. #12
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    Cut just fine. No bleeding at all. XT Deore brakes are super sweet!
    When the **** did we get ice cream?

  13. #13
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    I was always suspect but after cutting Avids, Shimanos and Hope lines down I am a believer. Make sure to keep that hose vertical and you shouldn't have a problem. Always easiest with 2 people.

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