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Thread: Problems with Porter Cable compressor

  1. #1
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    Aug 2008
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    Default Problems with Porter Cable compressor

    I have a Porter Cable pancake compressor model CPF23400P that I am having problems with. It keeps running and wont get above 80 lbs presssure . Replaced pressure switch, any ideas ? Thanks

  2. #2
    Tool Tech Mike's Avatar
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    Bad compression usually results from a worn piston ring and cylinder tube. Because that compressor is oil free it will wear through rings every once in a while.

    Here's a link to the CPF23400P compressor (this one is a type 0):

    Porter Cable CPF23400P TYPE 0 Pancake Air Compressor Parts : eReplacementparts.com

    And all versions of this compressor use the #K-0650 cylinder and ring replacement kit:

    eReplacementparts.com : CYLINDER AND RING REPLACEMENT KIT [K-0650] - $22.90

    If you get inside your compressor and the piston is messed up, you may need the complete cylinder and ring kit:

    eReplacementparts.com : PISTON, CYLINDER AND RING REPLACEMENT KIT [KK-4835] - $35.00

    Note: when replacing the piston rings and cylinder, do not use lubricant or oil.

  3. #3
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    I wondered about that but was hoping for a easier fix
    Thanks

  4. #4
    Tool Tech Mike's Avatar
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    No problem. Let me know how the repair goes.

  5. #5
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    Oct 2012
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    Default Compressor ring seating question

    Mike,

    You said not to use oil when assembling the piston and cylinder. I just did that when I installed a new cylinder sleeve in my Bostitch CAP2000P compressor. It wouldn't pump up past 40 psi initially so I just installed a new cylinder sleeve and ring. Now it pumps up to 65psi but no more. I'm guessing that it's because I oiled the ring when I slipped it into cylinder.

    Can I clean off the oil and try it again? Should I rough up the cylinder so the ring seats? I scuffed the cylinder up just a very little bit with a scotchbrite pad before I assembled it but it apparently wasn't enough.

    Thanks,
    Rick

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