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Problem Bleeding Brakes

Discussion in 'Chevy Trucks' started by Stan, Sep 16, 2010.

  1. Stan

    Stan Senior Member
    Messages: 579

    Working on a '94 3500. Replaced most brake lines, calipers, r whl cyl's etc. Bench bled the new master. I've done plenty before but can not seem to make this one happen. Ordered a vacuum bleeder hoping this would help. Any suggestions?
  2. Brian Young

    Brian Young PlowSite Veteran
    Messages: 3,382

    Did you have any one pump the brakes for you as you cracked the bleeders? If not, thats where I would start. If you dont have that option then I would let it sit over night with the bleeder cracked. The order I would go is Passenger rear first, then driver side rear, then passenger front and last would be driver side front.
  3. Stan

    Stan Senior Member
    Messages: 579

    Tried gravity bleed and assistance to pump. Seems like fluid may not be bleeding past ABS.
  4. t-sig

    t-sig Senior Member
    from 607
    Messages: 121

    I had a time with mine as well, that much air does not like to push through. the vacuum tool may help. I had to start loosening fittings at the ABS until gravity would push some fluid out there. Then tighten them back down and move on to the bleeders.
  5. Stan

    Stan Senior Member
    Messages: 579

    Decided to do the rear brake shoes. Usually there's a primary and secondary. The new shoes look the same with the exception of one is thicker than the other. Don't want to go by the way they were installed previously, anyone know which pad faces the front?
  6. Brian Young

    Brian Young PlowSite Veteran
    Messages: 3,382

    "Big in the back" I believe.
  7. Stan

    Stan Senior Member
    Messages: 579

    Thats the way they were previously installed, thanks Brian. Received the Vacula vacuum pump @ the door step today. Went to the main line in the rear and drew fluid. Real PIA to bleed the rear wheel cylinders, need to unbolt the backing plate to get @ it.
    Drew fluid from the from calipers but took a while. The Vacula is the cats azz!
  8. BlizzardBeater

    BlizzardBeater Senior Member
    from Maine
    Messages: 420

    Gravity bleed and vacuum bleed is all I use. The ole pump n dump always worked but just left some to be desired usually. You dont want to force the air out, you wanna draw it out.
  9. Stan

    Stan Senior Member
    Messages: 579

    Tried gravity with the cap unsealed wasn't getting it. Prbably too much air
  10. The mayor

    The mayor Senior Member
    Messages: 272

    we use a pressure bleeder from a company from motive products. I use it to get rid of all the old fluid in our trucks. We mainly use it for doing complete brake jobs on old Vw's. works great either way.