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304C CR Electrical issue

Discussion in 'Compact Excavators' started by 05f150fx4, Sep 22, 2019.

  1. 05f150fx4

    05f150fx4 Member

    Joined:
    Jan 7, 2010
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    Location:
    Earth
    Looking for help with my 304C CR. Serial number FPK03541. The machine will randomly go completely dead. Then it will be fine for a month or so after a jump. I replaced the alternator and belt about a month and a half ago, replaced the battery with a CAT battery in the fall. Still having issues with it going completely dead. Today after jumping it to try and get a project done, the thumb would not work and the machine would not turn off when the key was turned off and removed. Any suggestions on where to begin? Thanks in advance.
     
  2. Steve Frazier

    Steve Frazier Founder

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    5,699
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    I don't claim to be an expert on this topic but if it were me I'd start by checking all of the main ground lugs for corrosion. So many times electrical gremlins can be traced to a bad ground.
     
  3. Nige

    Nige Senior Member

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    G..G..G..Granville...........!!
    I'd second the recommendation about checking the grounding.
    An Electrical Schematic could be your best friend. If you want one start a Conversation with me (click on my username) and send me your email address.
     
  4. rmllarue91

    rmllarue91 Senior Member

    Joined:
    Apr 17, 2014
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    Occupation:
    field technician
    Location:
    northeast pa
    What helps finding battery draws is looking for warm fuses and relays when machine is cold
     
  5. kshansen

    kshansen Senior Member

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    Occupation:
    Retired Mechanic in Stone Quarry
    Location:
    Central New York, USA
    Very true. Don't matter how many volts or amps that are in the battery if they can not find their way back to the battery they are not going to do any work!
     
    mg2361 and rmllarue91 like this.
  6. f311fr1

    f311fr1 Senior Member

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    May 12, 2016
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    Location:
    Middle TN
    See attached electrical schematic
     
  7. f311fr1

    f311fr1 Senior Member

    Joined:
    May 12, 2016
    Messages:
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    Location:
    Middle TN

    Attached Files: