How do I shim the fuel pump on an 05 MXS Cat?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Cat nip, Jan 17, 2010.

  1. Cat nip

    Cat nip Light Load Member

    192
    10
    Jan 17, 2010
    Magnolia, TX
    0
    Can anybody out there tell me how to shim the fuel pump spring? And should I buy the Cat longer spring? I have an 05 Pete and am trying to get some more mpg's. I am by no means a mechanic but I do some work myself. Thanks.
     
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  3. oneshot

    oneshot Medium Load Member

    626
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    Feb 28, 2009
    mississippi
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    Search, Fuel Pump Question, that thread is a start.
     
  4. speedyc-16

    speedyc-16 Light Load Member

    92
    6
    Sep 6, 2009
    ice box,idaho
    0
    Cat man told me to stretch spring quarter of inch
     
  5. Markvfl

    Markvfl Road Train Member

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    Nov 29, 2007
    Apopka, FL
    0
    be careful to not raise the pressure above 114 psi
     
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