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Cummins ISX CM871 Fuel Actuator gasket change

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Sophia68, Jan 1, 2025.

  1. Jan 1, 2025 #1
    Sophia68

    Sophia68 Bobtail Member

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    Happy new year. Can anyone give me a quick pointer about how to safely remove the electrical connector on a Cummins ISX CM871 fuel actuator? The two red ones in the picture need new gaskets, which I bought yesterday, to seal up a tiny leak. I've never had to remove the rear two, the front two were done by someone else. Looks like three torx bit screws and the electrical connection then I can replace the gasket pretty easily.

    Thanks

    Sophia
     
    Sophia68, Jan 1, 2025
    Sophia68, Jan 1, 2025
    #1
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  3. Jan 1, 2025 #2
    062

    062 Road Train Member

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    I think it’s just has a tab that you depress and pull it out. If you pull the rubber boot down it should be facing you.
    @Heavyd @Goodysnap
     
    062, Jan 1, 2025
    062, Jan 1, 2025
    #2
    Heavyd and Sophia68 Thank this.
  4. Jan 1, 2025 #3
    Sophia68

    Sophia68 Bobtail Member

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    Feb 26, 2023
    Colorado
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    Thank for the reply...I'll try that...
     
    Sophia68, Jan 1, 2025
    Sophia68, Jan 1, 2025
    #3
  5. Jan 1, 2025 #4
    062

    062 Road Train Member

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    Looking at the pic it looks to be tamper proof torx. Cummins paints the whole thing, so I’d give the Torx bit a couple little taps before trying to turn.
     
    062, Jan 1, 2025
    062, Jan 1, 2025
    #4
    Heavyd and Big Road Skateboard Thank this.
  7. Jan 1, 2025 #5
    Sophia68

    Sophia68 Bobtail Member

    12
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    Feb 26, 2023
    Colorado
    0
    20250101_164502.jpg
    Took a closer picture....found the release tab for the electrical connection...thank you. Also the previous picture was probably bad lighting....thank goodness they appear to be regular torx !!
     
    Sophia68, Jan 1, 2025
    Sophia68, Jan 1, 2025
    #5
    Heavyd Thanks this.
  8. Jan 2, 2025 #6
    Inderjit

    Inderjit Heavy Load Member

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    Clean the area really good before you disassemble it.
     
    Inderjit, Jan 2, 2025
    Inderjit, Jan 2, 2025
    #6
    D.Tibbitt, 062, Sophia68 and 1 other person Thank this.
  9. Jan 2, 2025 #7
    Heavyd

    Heavyd Road Train Member

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    For any sensor, ECM or actuator harness connector, I like smear a bit of Grote Ultra Seal in there for protection, anti-corrosion and make it nice and easy to take apart next time.
     
    Heavyd, Jan 2, 2025
    Heavyd, Jan 2, 2025
    #7
    D.Tibbitt, 062, Sophia68 and 1 other person Thank this.
  10. Jan 2, 2025 #8
    Sophia68

    Sophia68 Bobtail Member

    12
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    Feb 26, 2023
    Colorado
    0
    Duly Noted!!
     
    Sophia68, Jan 2, 2025
    Sophia68, Jan 2, 2025
    #8
    Heavyd Thanks this.
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