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JCMack's avatar
JCMack
Explorer
Jun 24, 2014

Guardian generac 7500 generator problems

The Gaurdian 7500 in my mountain aire has started acting up. the gas engine starts no problem small delay then supplies 110 power but I see the power fade away after 15 seconds. The power does not drop off it fades away. It is also intermittent, sometimes it will work fine and after driving awhile when I try to start it again it will start and fade away. I am thinking it is a lose connection at the generator but thought
I should check with more knowledgeable RV people.Thanks to all.
Class A

1 Reply

  • hipower's avatar
    hipower
    Explorer
    Jun 25, 2014
    A loose connection would be one thing to look for. Also look for dirty slip rings, sticky brushes in their holders, etc. While we see people cleaning slip rings with emery paper it isn't suggeated, there is a cleaning stone available from electrical supply houses that looks like a big abrasive eraser that should be used.

    While you are checking out the brushes and brush holders confirm that the brushes are making good contact competely across the contact face. Sometimes they get cocked and don't make good contact. This shows up as irregular wear on the contact surface and greatly diminishes or completely eliminates generation of electricity.

    Beyond that you are probably looking for a generator repair shop to get deeper into the unit.

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