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Thread: My Mityvacs keep breaking

  1. #1
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    Question My Mityvacs keep breaking

    I love the ability to bleed brakes by myself with this tool. However, about once a year now, the plunger the pump handle attaches to seizes, and the handle snaps.
    Does this happen to anyone else?
    Is there something this tool needs to keep it from seizing?

  2. #2
    2009 F650GS SirRonny's Avatar
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    That is strange. I have used my Mityvac for quite a few years, bled my Harley brakes several times and my RT at least 3 times and never had a problem. Do you just use it for brakes or is there another chemical going through it that may be causing problems? No idea, but so far no problems with mine....knock of wood.

    Ron
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    Which model?

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    Registered User scrape's Avatar
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    I replaced my mityvac with this simple tool, it is simply a one way check valve. Sorta like a speed bleeder, but not requiring modifiecations to the OEM hardware. Cost less than $20 too.

    http://www.motionpro.com/motorcycle/partno/08-0143

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  6. #6
    On the Road fireguy's Avatar
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    I have a Mityvac that is made of brass. It holds up well. If you are using one of the plastic ones and any brake fluid is allowed to enter the pump it will melt the plastic. I have seen brake fluid eat a Craftsman screwdriver handle. We know what it does to paint...

  7. #7
    2009 F650GS SirRonny's Avatar
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    I really don't know what model it is, just the cheapo plastic one with the dial gauge on it. Paid about $30 for it if I remember right. It has really been a good one, but I have taken care of it and not allowed fluids to enter it. I can go out tomorrow and get the model if need be.

    Ron
    Ron Morris
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    Brake bleeder

    Looking at the Wunderlich website, it states that its automatic brake bleeder should not be used with ABS brakes. Is this true, and does that mean that a bmw dealer is the only recourse, or is it just a disclaimer?

  9. #9
    Cam Killer marchyman's Avatar
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    Quote Originally Posted by gnrogers View Post
    Looking at the Wunderlich website, it states that its automatic brake bleeder should not be used with ABS brakes. Is this true, and does that mean that a bmw dealer is the only recourse, or is it just a disclaimer?
    BMW has lots of different ABS systems and I don't know if that comment is true for all of them. As for the dealer being the only recourse... the answer is no. It is not difficult to bleed brakes the old fashioned way of repeated squeeze and bleed. If you have iABS I brakes (power assist) the wheel circuits are super easy to bleed as the servo acts as a built in power bleeder. The control circuits are done with squeeze and bleed.

    Which brakes do you want to bleed?

  10. #10
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    this will bleed ABS brakes too ... vacuum and pushes too
    I've got the pro metal version with all sorts of attachments

    sometimes the only way to successfully bleed some circuits is to push fluid from bottom up.


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    I have had my Mighty-Vac for 27 years

    It was one of the first tools I bought when I started at my job in an M.B. V.W. dealer, being the new gut I was the official oil changer/brake bleeder guy. I have never even wiped it off with anything other than a clean shop rag, in fact I think there's still brake fluid from y Nissan P/U brake job last Fall. No seriously I have had this Mighty-Vac and used it with out a problem ever for over 27 years. It is the brass one but when I bought it I think it was around $55 for the whole kit and its all still good other than a little built up dirt and grime.

  12. #12
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    I have been buying the plastic one - big mistake apparently. I think I will try the brass one.
    The one you hook to a compressor, shown on one of the links, is intriguing - maybe just the thing for a car?

  13. #13
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    Quote Originally Posted by jforgo View Post
    I have been buying the plastic one - big mistake apparently. I think I will try the brass one.
    The one you hook to a compressor, shown on one of the links, is intriguing - maybe just the thing for a car?
    don't think Mitivacs are made of brass anymore. they've been made of aluminum looking pot metal for quite some time. and plastic of course.

    the pot metal one is really pretty durable. don't leave brake fluid inside em.. they eventually will corrode.

  14. #14
    Registered User amiles's Avatar
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    I thought that I saw the metal version in the tool department at Sears a while back.

  15. #15
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    unless they recently changed, new Mitivac do come in metal (pot metal), just not brass.

    my Mitivacs never get used anymore. Phoenix bleeding systems is head and shoulders better. I've got the $300 pro version, but plastic version should work good too. same as plastic Mitivac, not as durable.

    being able to push or pull your brake fluid makes all the difference on hard to bleed situations. like ABS circuits.




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