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  1. #1
    Join Date
    Dec 2012
    Location
    columbus, OH
    Posts
    2,136

    Rebuilding a vacum pump

    I tore down a robinair 5cfm pump to see why motor kicking out on OL. Found the spring that modulates first stage vane was tangled up and broke. So I called robinair tech support and was informed they cannot sell internal components. Amy ideas on how i could obtain this spring or how spring are sized? TIAImageUploadedByTapatalk 21364410684.010442.jpg ImageUploadedByTapatalk 21364410709.436544.jpg

  2. #2
    Join Date
    Jul 2006
    Location
    Anytown USA
    Posts
    2,064

  3. #3
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,594
    Moved to Tools and Test equipment forum.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  4. #4
    Join Date
    Dec 2012
    Location
    columbus, OH
    Posts
    2,136
    Thank you for the link, I dont think I have the means to accurately size the spring other than length and width. I would assume compression strenth is important, if it was not the same as the other spring it would set the blades off balance. It still sucks scraping a perfectly good pump over one little spring.

  5. #5
    Join Date
    Jul 2006
    Location
    Anytown USA
    Posts
    2,064
    Order a few different types and sizes of springs. Give it a shot, nothing to lose right?

  6. #6
    Join Date
    Nov 2006
    Location
    Athens, Ohio
    Posts
    1,990
    They say "cannot sell" which means "WON"T sell." That would be the last of their products I would buy.

  7. #7
    Join Date
    Mar 2001
    Posts
    1,516
    Will they sell the whole module?
    One way to outthink people is to make them think you think. They'll think you're not really thinking what you're trying to get them to think you think...........

  8. #8
    Join Date
    Mar 2013
    Posts
    26
    looks like a spring in a ball point pen.

  9. #9
    Join Date
    Dec 2012
    Location
    columbus, OH
    Posts
    2,136
    Quote Originally Posted by uniservice View Post
    Will they sell the whole module?
    Yes they will sell the whole module no problem

  10. #10
    Join Date
    Dec 2012
    Location
    columbus, OH
    Posts
    2,136
    Quote Originally Posted by y7turbo View Post
    Order a few different types and sizes of springs. Give it a shot, nothing to lose right?
    Thats a good idea, im going to try it. I will post back how it turns out.

  11. #11
    Join Date
    Dec 2012
    Location
    columbus, OH
    Posts
    2,136
    Quote Originally Posted by jtk910 View Post
    looks like a spring in a ball point pen.
    It is wound more tight and a little thinner.

  12. #12
    Join Date
    Dec 2012
    Location
    columbus, OH
    Posts
    2,136

    Rebuilding a vacum pump

    Your article is refering to spring the season?

  13. #13
    Join Date
    Apr 2007
    Posts
    548
    They suck. My vanes wore out after a year and it was barely used during that year and ofcourse they wont sell those either. I lightly sanded them and figured I was going to screw it up but it didnt work anyway so big deal. Turns out it works better than ever now. If you hold the vane against something flat you can see that it is uneven and if you carefully sand them they will work again. Maybe I just got lucky. I also found a vane manufacturer online that said he could duplicate them if I sent the old vanes to him and the price was very reasonable.

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