Tips on replacing calipers & flushing brake fluid.

Discussion in 'Engine & Drivetrain' started by lowpost99, Sep 19, 2019.

  1. IZZY_BRITTON

    IZZY_BRITTON Member

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    Power pressure bleeder is super cake to use. it is basically a pump up weed sprayer with an attachment to a universal brake fluid reservoir cap. you put fluid in the weed sprayer, attach to master cylinder, pump up the weed sprayer, and crack the bleeders and watch the fluid flow. just dont over pressurize the sprayer thing or you will have a mess. dont fill your reservoir beyond 3/4 or you will have a mess. get one of these or make one on your own and you will never ask your buddy or significant other to help with bleeding your brakes again.

    center the proportioning valve with a good diagnostic scan tool like a snap-on solic or a GM Tech2. its a simple process that only requires you to start the process on the scan tool and press and release the brake pedal one or 2 times. really this can solve a lot of common 'old school' brake issues.
     
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  2. 07Burb

    07Burb GM fan for life Staff Member Administrator Supporting Member

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    Done :waytogo:
     
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  3. lowpost99

    lowpost99 Member

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    Thanks for the merge! I realized it was in wrong section about 6 hrs later, and didn't know how to fix.
     
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  4. lowpost99

    lowpost99 Member

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    Sounds like a great idea and the videos seem like its easy to build one. So all the new fluid just goes into the pump sprayer and then gets pushed into the system. Can you drive the truck safely after bleeding all the lines, without centering the proportioning valve? I've never done that after bleeding the brakes... can I get around for a while without doing that?
     
  5. PNW VietVet

    PNW VietVet Full Access Member

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    You beat me to it. ^^^^^^ IMO, flushing first is ok but not an absolute. Just open the bleeders one at a time with the master cylinder open and keep it topped off with fresh fluid and watch the fluid drip at the bleeder till clean. You can do this before or after the parts replacement. Flushing brake fluid is not like a P/S flush or a coolant flush or a trans flush where there is a rush of fluid thru these systems during the process. A vacuum device is desired for the brake fluid. May have been said above but will you use silicone fluid? If so, it is best to get as much of the old completely out of the system. Yes, crawl under there and check all metal lines. Salt on winter roads creates havoc with those.
     
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  6. 07Burb

    07Burb GM fan for life Staff Member Administrator Supporting Member

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    well, don't let it happen again :crazy:
     
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  7. Rocket Man

    Rocket Man Build It Better

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    If you don’t want to mess with making a pressure bleeder, the Motive one works awesome. It’s a bit expensive but if you have more than one vehicle or work on brakes much it’s well worth it. I got tired of messing with the vacuum ones. This one refills the master automatically and you can bleed the whole system super easy.Motive Products 0108 Brake System Power Bleeder For Most Late Model GM Cars and Trucks https://www.amazon.com/dp/B000TK9FE8/ref=cm_sw_r_cp_tai_MAtHDb2H1P9E9
     
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  8. iamdub

    iamdub Hold on... Lemme overthink this for a bit...

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    I use this method. Cost me about $5 in clear hose from Home Depot and a water bottle I dug out of my recycle bin. Cheap and effective and I can completely flush 'em by myself faster and easier than with trying to communicate with another person.

    [​IMG]
     
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  9. IZZY_BRITTON

    IZZY_BRITTON Member

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    Agreed! This is the same one I have and what I was referring to above but couldn't remember the name.

    These things work well, and as mentioned by rocketman and asked by OP.

    But in my experience if you pressurized these beyond about 5-10 psi they have a potential to make a mess.

    @Rocket Man : have you had issues with the motive making a mess when using with too much pressure? Or is it just me?
     
  10. Rocket Man

    Rocket Man Build It Better

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    No, I just followed the directions. I don’t remember the pressure I used. I’ve done 4 complete fluid changes on 3 different vehicles. Never a drop spilled. I love how I can add 2 quarts of fluid to the tank of the Motive, pump it up and attach it, then just go open up each bleeder and watch it flow.
     
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