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Bleeding the Power Steering System.

Discussion in 'The Garage' started by colbystephens, Dec 31, 2005.

  1. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    My buddy and I are replacing his power steering pump - and I'm wondering what we need to do to bleed it. Our shop manuals don't say anything about it, and all my searching online hasn't brought up any results. Can you help? Thanks.

    colbystephens.
    www.web.pdx.edu/~colbys
     
  2. theperfectgarage

    theperfectgarage 1/2 ton status

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    I really dont know whats correct, but I always top it up, run the engine and crank the wheels back and forth a few times, repeat till feels normal, top off and go.
     
  3. WhiteBurb

    WhiteBurb 1/2 ton status

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    Fill it as normal, start the engine and turn the wheel back and forth, lock to lock. Keep doing that until no more air bubbles come up in the resevoir.
     
  4. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    wow. didn't realize it was that easy. thanks.
     
  5. beater_k20

    beater_k20 Banned

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    its best to do this with the front wheels off the ground. less pressure on a dry PS pump, makes it last longer.
     
  6. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    so we finally bled the p/s system tonite. it's got a brand new pump and pulley, yet when you lock the wheel, it still makes a small amount of that horrible p/s noise. what could be the cause of this? i'm pretty sure the p/s bled sufficiently. when he bought the rig, it lacked about 1/2 qt of p/s fluid - could this have ruined his steering box and thus the squeak?
     
  7. 1977k5

    1977k5 3/4 ton status Vendor

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    That's just the noise that the pump makes when it is at full crank. The valves in the steering box shut and the pump cant move any fluid.
     
  8. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    you're telling me a noise that ugly is normal?? i have a hard time with that. this isn't the normal hum of a steering wheel at full lock - this is the squaking noise a bad pump makes.
     
  9. beater_k20

    beater_k20 Banned

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    i have yet to hear a PS pump hum at full lock. they always scream bloody murder, for the reason above.... its still trying to turn the wheel, and the wheel cant be turned any further.
     
  10. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    really? i'm not too experienced with old chevy's yet, but that's wierd.
     
  11. 1-ton

    1-ton 1/2 ton status Premium Member

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    One trick that many people are not aware of is, with the front wheels off the ground...after turning them back and forth several times, turn the wheels to full lock one way, then shut the engine down, and let it sit for about 15 to 20 minutes; then do it again for the other side. This is the way of getting all the air out of the system.

    I am sure someone will come along and disagree with me on this because they always do, but they are full of sh!t. I know this works because I read it in a factory Sagnaw training manaul many years ago during some factory training I recieveded.
     
  12. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    good tip - i'll have to try that as well. ;) Thanks!
     
  13. mini_mull

    mini_mull 1/2 ton status

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    That made me smile. Tell us what you really think next time OK. :haha: :haha:

    It's true though, gotta be careful who you listen to, but it's usually not that difficult to discern who's blowing smoke.
     
  14. 1-ton

    1-ton 1/2 ton status Premium Member

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    Actualy that should be "saginaw"...as in Saginaw Michigan
     

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