773 problem.

Discussion in 'Heavy Equipment & Pavement' started by Junior M, Jun 17, 2013.

  1. Junior M

    Junior M LawnSite Fanatic
    Messages: 13,607

    Long story short.. I put a new battery in my 773 Saturday before last because the old battery was old and it kept going dead, ran it numerous times. Never had a problem with starting.

    Noticed it starting slow yesterday. Showed up at the job this morning and it won't turn over.

    I am no mechanic. But for bobcats outrageous rates I am gonna take a swing at it.. How can I test the alternator?
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  2. alldayrj

    alldayrj LawnSite Gold Member
    Messages: 3,793

    Put a voltmeter to it and see if it is putting out 14 volts. There's probably some videos on YouTube. Or take it to advance and let them test it
  3. Impact-Vector

    Impact-Vector LawnSite Member
    Messages: 150

    Either flip the cab and remove it and have a parts store test it or flip the cab and attach a pickup from an alternator tester to the power off feed wire. Then use a tester to see if it holds its cca.

    Poor mans version- attach voltmeter to battery. Observe voltage.

    Start bobcat and attach voltmeter to battery. If running voltage > stopped voltage it's the battery. If the other way around.,its the alternator.

    I changed my battery with one I had lying around, it was the cheaper option and turned out to be the battery
  4. Nelson M Martin

    Nelson M Martin LawnSite Member
    from Ontario
    Messages: 211

    with engine not running the battery should test approx. 12.5 volts
    with engine running and no booster cables attached to battery it should test 13 to 15 volts

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