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320clu alternator problem

Discussion in 'Excavators' started by landworksTN, Apr 28, 2010.

  1. landworksTN

    landworksTN Active Member

    Joined:
    Jan 9, 2010
    Messages:
    26
    Occupation:
    Self-employed
    Location:
    Sparta, TN
    the warning, battery voltage irregular, came up today. My machine is a grey market machine so cat numbers do me no good. It has a mitsubishi alternator #a4tu3599 on it and just wondering if anyone else had the same excavator or a way to cross reference the number so that i might get a more available alternator. Also is the voltage regulator built into these alternators as most later model ones are? Thanks for your help guys. David:beatsme

    2003 cat 320clu
     
  2. John C.

    John C. Senior Member

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    Jun 12, 2007
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    Occupation:
    Machinery & Equipment Appraiser
    Location:
    Northwest
    Find an alternator repair shop. You will most likely find they will have sources for parts.

    I would also not assume that the Cat dealer won't get parts for you. Usually the parts like alternators and starters are the same. Find a domestic machine and compare the components.

    Good Luck!
     
  3. Chris5500

    Chris5500 Well-Known Member

    Joined:
    Oct 23, 2009
    Messages:
    217
    Occupation:
    Plant Mechanic
    Location:
    Australia
    Did it come on and stay on? Flash on once? Does it flicker on and off all day long?

    Have you checked to see if the r-terminal is still connected or if theres a break in the r-terminal wire?
     
  4. Komatsu 150

    Komatsu 150 Senior Member

    Joined:
    Aug 18, 2007
    Messages:
    671
    Location:
    Northern Illinois
    If you can get a parts book from the original country, Cat can often get the parts with those part numbers. Of course you may have to deal with whatever language it is. The rebuilder is the best bet although they have have turned me down in the past - some offshore alternators they have serious trouble getting parts for.
     
  5. landworksTN

    landworksTN Active Member

    Joined:
    Jan 9, 2010
    Messages:
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    Occupation:
    Self-employed
    Location:
    Sparta, TN
    Thanks for all the help. My local cat dealer and I located a alternator for it. There was only two in the country. We tried to get it rebuilt but the stator was shot which happened to be the most expensive and most rare part of course. The reman was $400 and the new unit was $800. Since there was no remans I had no choice. Not so fast. My part guy says sometimes when no remans are available you can put an order in for it and they'll send you a new one. Presto! That's what just happened. Got lucky for once.:)
     
  6. grandpa

    grandpa Senior Member

    Joined:
    Oct 16, 2009
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    1,891
    Location:
    northern minnesota
    Yup, that happened to me once too, got a new injection pump for the price of reman. Dealer said they needed on to rebuild for stock so they made me a good deal, glad you got lucky too, a guy needs to once in a while, bah ha ha:drinkup