bleeding brakes

Discussion in 'PSI Superchargers Tech Questions' started by hotrodharlkey, Mar 20, 2014.

  1. hotrodharlkey

    hotrodharlkey New Member

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    i have a CNC master cly with M/W duel piston brake claipers [has bleeder on bottom and one on top of caliper]i'm not able to get brakes to bleed..i started out bleed at M/C then at right top and left top then right bottom and last l bottom..not getting any brake pressure at all at bleeders;;everything is new;;am i bleeding wrong or starting at wrong place..been doing brakes on stock cars and hot rods for 50 yrs and never had a probluminum bleeding brakes;;;;the way i bleeding[new way i just started doing a yr ago]is i loosen bleeder and have someone push brake pedel down slow till hits floor and holds there till i tighten bleeder.then he releases pedel back to top..keeping doing this way..has aways worked for me this way on stock calipers with only 1 bleeder per caliper..am way i'm doing doesn't work with the 4 bleeders[top/bottom of calipers]?
     
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  2. Comax Racing

    Comax Racing Member

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    Is the master lower than the calipers? That will cause you grief. Did you bench bleed the master? Usually the farthest caliper to the nearest one when bleeding. I got myself a pressure bleeder to save the problems.

    Corey
     
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  3. hotrodharlkey

    hotrodharlkey New Member

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    m/c is below the calipers but i do have a 2lb resuduel valve between m/c and calipers..
     
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  4. Comax Racing

    Comax Racing Member

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    If the master is lower it may be having trouble pushing the air up hill and the bubble is trapped somewhere. All it takes is a bit of a bubble and you will be chasing your tail.
    Find yourself a cheap hand operated vacuum pump with a bleeder attachment, they have them at the local Chinese supply stores for 30-40 bucks.


    Corey
     
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    Last edited: Mar 20, 2014
  5. hotrodharlkey

    hotrodharlkey New Member

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    got them bleed;;had another racer tell me to not try to bleed using the bottom bleeders[i was trying to bleed
    all 4 bleeders;;once i left bottom bleeders along then had brakes after about 15 mints bleeding;;;
     
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  6. kosky racing

    kosky racing Comp Eliminator

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    bleeders

    Bleed only top Furthest away first
     
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  7. Comax Racing

    Comax Racing Member

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    Kinda like putting the calipers on upside down.:D Glad you figured it out.
     
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  8. tcarr

    tcarr Member

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    also one thing to check is the cap on the master cylinder, If there is a rubber piece inside the master cylinder lid make sure it has a slot cut into it. All it needs is a razor blade to put a slice in the center of it to allow it to breath. I ran into this problem a few times but only with Strange dual lid master cylinder. I always check every other one i deal with just to be safe
     
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