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Ridgid RD80701 3000psi 2.6gpm - Low Pressure

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  • Ridgid RD80701 3000psi 2.6gpm - Low Pressure

    CAT Triplex Pump 3GXT27
    Subaru 6HP SP-170

    2 years old, stored inside in heated/cooled storage. Engine runs like a top, New air filter, new sparkplug, clean gas and fresh oil each year.

    Trying to locate info on what to check or swap out like the unloader, which I know nothing about. Have removed the values and can see that the plungers are all performing properly. Water flows through the values, but pressure is about half what it should be. What should I check or replace?

  • #2
    Re: Ridgid RD80701 3000psi 2.6gpm - Low Pressure

    Unloader issues are rather rare on the Cat pumps, but they can vibrate themselves out of adjustment. I'd be more likely to suspect a valve issue, especially if you can feel hard pulsations in the hose when you're spraying (even though you didn't say that).

    Here's a link to the service/diagnosis manual for your pump:

    http://www.catpumps.com/select/pdfs/1DX-3SPX%20Svc.pdf

    Hope it helps.
    "Doc"
    "HONK if you've never seen a gun fired from a moving Harley"

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    • #3
      Re: Ridgid RD80701 3000psi 2.6gpm - Low Pressure

      Don't know why I didn't notice this the first time...

      Originally posted by AMSTools View Post
      2 years old... What should I check or replace?
      It's got a three year warranty... unless you tinker with it yourself. Then it possibly has a voided warranty. So don't even try, just take it to your ASC.
      "HONK if you've never seen a gun fired from a moving Harley"

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