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Quick brake question

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Bubba Ray Boudreaux, Dec 20, 2001.

  1. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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    I was reading on here about a button on the p/valve to push in before bleeding the front brakes. I looked on my p/valve, didn't find a button on it. I'm hoping to get some pedal back. The pedal goes at least halfway before I get good stopping action. Normal? I'm looking for the "touch the pedal and the brakes are working" feel if you know what I'm talking about. Should I be looking somewhere else like the master cylinder for problems? If it's something like that, I'll worry about it later. I'm getting the K5 ready to roadtrip back to OK on Sunday.

    Bubba Ray Boudreaux,
    Official Colorado K5.com Fantasy Football Choke Artist!<a target="_blank" href=http://community.webshots.com/user/mdntrdr1>http://community.webshots.com/user/mdntrdr1</a>
     
  2. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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    btt

    Bubba Ray Boudreaux,
    Official Colorado K5.com Fantasy Football Choke Artist!<a target="_blank" href=http://community.webshots.com/user/mdntrdr1>http://community.webshots.com/user/mdntrdr1</a>
     
  3. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    On my 84, there is a button on the driver's side (I think) of the valve. If I recall it's covered by a little rubber nipple. I wish I could go outside and look, but it's -4' Farenheit outside right now.



    <font color=blue> NEVER FORGET, NEVER FORGIVE, NEVER SURRENDER<font color=blue>
     
  4. '73 K5

    '73 K5 1/2 ton status

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    My shop manual said the same thing about the valve thing for bleeding the front brakes. I just ignored it and was able to bleed them just fine without messing with it. The brakes are fine now.

    '73 K5
    Chevy good...Ford bad
     
  5. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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    There was something on the left side, couldn't tell what it was, I'll check it out in the morning to make sure it's not just rusted dirt caked on like I thought it was. I was just checking my manual (Haynes, should check the shop one) and it didn't say anything about the p/valve. Cheapos! One thing I did read though was all the vacuum needs to be released before bleeding, think this will help since I haven't done it?

    Bubba Ray Boudreaux,
    Official Colorado K5.com Fantasy Football Choke Artist!<a target="_blank" href=http://community.webshots.com/user/mdntrdr1>http://community.webshots.com/user/mdntrdr1</a>
     
  6. 502Burban

    502Burban 1/2 ton status

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    Not all proportioning valves I've seen have the button. But, if yours does, it should be on the drivers' side under a rubber cap.

    Robb
    <a target="_blank" href=http://community.webshots.com/user/robbrj>'73 GMC Suburban - 502DFI</a>
     
  7. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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    Re: Quick brake question, UPDATE

    Just came in from redoing it. Found the button. Is that thing suppose to be hard or easy to push in? I couldn't hardly push it in. Released all the vacuum and rebled the front. Didn't change the pedal. Oh well, at least the brakes do work good, even if I have to push the pedal about 3/4 of the way down. I don't like the feel, but I've been using it for the last few months. Just that my co-driver hates it, claims her father's Dodge has better brakes. Not likely. I'll wait til I come back off the roadtrip to troubleshoot.

    Bubba Ray Boudreaux,
    Official Colorado K5.com Fantasy Football Choke Artist!<a target="_blank" href=http://community.webshots.com/user/mdntrdr1>http://community.webshots.com/user/mdntrdr1</a>
     
  8. dyeager535

    dyeager535 1 ton status Premium Member

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    Re: Quick brake question, UPDATE

    Are the brakes spongy or just no pedal effect until the pedal is depressed quite aways? My master cylinder problem symptoms were spongy brakes that I could NOT bleed to get rid of, and eventually, the pedal would slowly sink to the floor when I was holding the pedal down at a light. At that point I decided I had better do something about it : )

    Dorian
    My tech/links page: <a target="_blank" href=http://www.dorianyeager.com/index2.html>www.dorianyeager.com/index2.html</a>
    Why insist on counting when the ring gear has the tooth counts stamped in?
     
  9. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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    Re: Quick brake question, UPDATE

    The pedal goes at least halfway down before I get any brakes, but goes down a little further before I get good brakes. There's no spongy feel, in fact I just got back from doing errands and the pedal felt a little better, it just goes down too far for my liking.

    Bubba Ray Boudreaux,
    Official Colorado K5.com Fantasy Football Choke Artist!<a target="_blank" href=http://community.webshots.com/user/mdntrdr1>http://community.webshots.com/user/mdntrdr1</a>
     
  10. Sparky87k5

    Sparky87k5 1/2 ton status

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    Re: Quick brake question, UPDATE

    If you have a firm pedal but just have to push a long ways down, could be your rear drum brake self adjusters aren't working. Might try adjusting the shoes up manually. I usually jack up each wheel and rotate by hand while adjusting brakes. Try for a very slight dragging sound. If your brakes don't need bleeding, your shoes are up tight, then the only thing left is your master cylinder.

    87 K5, 427BBC,D60 &amp; 14BFF, NV4500, NP208, TSM disc's,
     
  11. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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    Re: Quick brake question, UPDATE

    I've thought about checking the rear brake adjustment since this started since I put the rearend back in. Of course I ran out of time to pull the wheels off to check. I'll keep that in mind when I get back.

    Bubba Ray Boudreaux,
    Official Colorado K5.com Fantasy Football Choke Artist!<a target="_blank" href=http://community.webshots.com/user/mdntrdr1>http://community.webshots.com/user/mdntrdr1</a>
     
  12. outlaw612

    outlaw612 1/2 ton status

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    Re: Quick brake question, UPDATE

    I had the same problem after my rear disc conversion. I put a 1 ton MC on and couldnt believe the difference.

    <a target="_blank" href=http://www.geocities.com/outlaw613/K5.html>http://www.geocities.com/outlaw613/K5.html</a>
     

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