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where to find used parts?

Discussion in 'Excavators' started by Rilezz, Jul 5, 2021.

  1. Rilezz

    Rilezz Member

    Joined:
    Aug 13, 2020
    Messages:
    14
    Location:
    Maine
    So my 2002 CAT 307C (SN BCM00229) has a issue with the monitor in the cab (PN 167-3613). The issue is that the low oil pressure light and alarm stay on after start up. I changed the oil and replaced the sensor and then finally had Milton CAT come out and tell me it was the monitor. A new one is about 1600$ and the service tech didn't really have a solution other than replacing the monitor, and I am wondering if used parts like this are a thing in the heavy equipment world and if so where?

    Thanks for any help.
     
  2. Nige

    Nige Senior Member

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    Try the parts section of Machinery Trader.?
    I see 3 results on there but all of them say "call for prices"
     
    Vetech63 likes this.
  3. Delmer

    Delmer Senior Member

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    Jan 4, 2013
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    7,249
    Location:
    WI
    Sometimes monitors like that can be repaired. Either take it apart and check the soldering and connections, and obvious burned or swollen components. Or send it to somebody who can.
     
  4. Tim Burke

    Tim Burke Well-Known Member

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  5. Puffie40

    Puffie40 Well-Known Member

    Joined:
    Apr 6, 2010
    Messages:
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    Location:
    Southeastern B.C.
    The solder joints are the most likely point on circuit boards to require repair on mobile equipment. Washing the board with isopropyl alcohol, then reflowing the joints with a soldering iron with a fine tip and just a little bit of new solder or flux is enough to rejuvenate the joints.

    If there are any electrolytic capacitors, those should get replaced, but those are fairly uncommon on logic boards (they are typically used in power supply circuits)
     
  6. Puffie40

    Puffie40 Well-Known Member

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    Messages:
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    Location:
    Southeastern B.C.
    Before you go after the monitor, do you know if Milton checked the wiring harness for continuity from the oil sensor? I'm not sure if the Cats digitally monitor oil pressure, but if the sensor is just a idiot-light pressure switch like on a car, then it's possible a wire abrasion is shorting the oil sensor light somewhere.
     
    skata and Paul Council like this.