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Thread: VACUUM Pump Repair

  1. #1
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    Hmm VACUUM Pump Repair

    My Pump took a dump so here I sit full of pit.

    I took the cover off my Bacoeng 3 cfm Rotary Vane Pump and found a broken flat metal shim that is fastened by a screw to the top of the cylinder housing and it covers a discharge port for oil to circulate through the cylinder.

    I think its aluminum metal so I cut my own from what I could find the hardware store , small peice about 3/4" x 1/2". Seems to work better But I can only pull down to 230 mics for a blank off test.

    I cant get the Bacoeng manufacturer to respond quickly to my picture request.

    Does any one know the technical name for this metal shim cover?
    And, is it ok to use any aluminum to make my own untill I can find the proper replacement?

  2. #2
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    Can you post a picture?
    "I think Quantum tunneling would work great... "

    "Call a technician for God's sake. Or we'll see you on the news or the Dark Side of the Moon."

  3. #3
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    Quote Originally Posted by JayMan7 View Post
    Can you post a picture?
    I dont seem to be able to, I read the directions on how to post using the attachment icon, I dont see an attachment icon, so I think I havent posted enough threads yet " Forum Rules".

  4. #4
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    Thread Starter
    Name:  IMG-4764.jpg
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    Found the icon

  5. #5
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    So is that like a reed valve? Can you post a pic of where it goes on the pump?
    "I think Quantum tunneling would work great... "

    "Call a technician for God's sake. Or we'll see you on the news or the Dark Side of the Moon."

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  7. #6
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    It looks like a valve and maybe the manufacturer didn't put a stop so when you first pull down from atmospheric the valve gets over stressed.

    Sent from the Okie state usin Tapatalk

  8. #7
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    Quote Originally Posted by JayMan7 View Post
    So is that like a reed valve? Can you post a pic of where it goes on the pump?
    Name:  IMG-4779.jpg
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    Here you can see the stop and my replacement but my replacement started getting an upward curve that doesnt let it seat flush after you run it for awhile.

  9. #8
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    Quote Originally Posted by AC Hacker View Post
    Name:  IMG-4779.jpg
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    Here you can see the stop and my replacement but my replacement started getting an upward curve that doesnt let it seat flush after you run it for awhile.
    Just a thought...try using a feeler gauge to make that...they’re kinda springy and seem really tough. You could try different thicknesses until you get one that works.
    "I think Quantum tunneling would work great... "

    "Call a technician for God's sake. Or we'll see you on the news or the Dark Side of the Moon."

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  11. #9
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    Save up for a jb industries 5 cfm.
    It'll cost you more than four times but that one cost but they're built right to begin with.

    Sent from the Okie state usin Tapatalk

  12. #10
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    Quote Originally Posted by JayMan7 View Post
    Just a thought...try using a feeler gauge to make that...they’re kinda springy and seem really tough. You could try different thicknesses until you get one that works.
    OK, that worked out great, I was able to match the manufacturers thickness of the reed valve and can pull 75 mics with rig and core remover attached. Thanks guys for all your help.

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  14. #11
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    This was from my vacuum and decay test today with my 1987 (or something like that. I don't remember for sure.) JB industries 5 cfm vacuum pump.

    Sent from the Okie state usin Tapatalk

  15. #12
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    Don't mind the white lineset. This was for a friend and I warned him about Chinese line sets so if it goes bad I am charging full price to replace them.

    Sent from the Okie state usin Tapatalk

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  17. #13
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    Quote Originally Posted by AC Hacker View Post
    OK, that worked out great, I was able to match the manufacturers thickness of the reed valve and can pull 75 mics with rig and core remover attached. Thanks guys for all your help.
    Nice dude! Glad it worked for you!
    "I think Quantum tunneling would work great... "

    "Call a technician for God's sake. Or we'll see you on the news or the Dark Side of the Moon."

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  19. #14
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    Quote Originally Posted by R600a View Post
    This was from my vacuum and decay test today with my 1987 (or something like that. I don't remember for sure.) JB industries 5 cfm vacuum pump.

    Sent from the Okie state usin Tapatalk
    Yeah those bluvacs really are sweet! You got one heck of a good vacuum on that system!
    "I think Quantum tunneling would work great... "

    "Call a technician for God's sake. Or we'll see you on the news or the Dark Side of the Moon."

  20. #15
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    VACUUM Pump Repair

    Oh you got those big blue hoses too I didn’t notice that at first. That’s a pretty nice set up.
    "I think Quantum tunneling would work great... "

    "Call a technician for God's sake. Or we'll see you on the news or the Dark Side of the Moon."

  21. Likes R600a liked this post.
  22. #16
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    Quote Originally Posted by JayMan7 View Post
    Oh you got those big blue hoses too I didn’t notice that at first. That’s a pretty nice set up.
    Yep. As they say go big or go home.

    Sent from the Okie state usin Tapatalk

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  24. #17
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    Always the forum rules limit access, to important objectives important to the company. In the final analysis, it would be prudent and of great convenience to the board if they actually become more aware of what they're writing for the terms and conditions. In all honesty, it seems that they're completely oblivious in what they write. It would also be prudent if the rules simply followed a thorough standard of logic and common sense. Of course the board has their opinion on it following the laws of logic and common sense or in some cases defy these laws altogether.

  25. #18
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    Outstanding, this board is going by the measurement of the Metric System. Let's make charts like these more frequent.

  26. #19
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    Which is equivalent to the phrase all or nothing.

  27. #20
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    I completely agree.

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