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Cat 933

Discussion in 'Track Loaders (NOT CTL)' started by svcman717, Jun 1, 2022.

  1. svcman717

    svcman717 New Member

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    Need help finding a Rear main crankshaft bearing for a D320 engine. Cat part # is 7M9283. Aftermarket bearing would be fine also.
     
  2. Welder Dave

    Welder Dave Senior Member

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    Someone like OldMagnet can probably help you. If he doesn't respond you can always PM him. He's extremely knowledgeable on older Cats. You could check on Machinery Trader and see if the part number is listed.
     
  3. Old Magnet

    Old Magnet Senior Member

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  4. svcman717

    svcman717 New Member

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    Thanks. I saw the one on ebay but I need a standard bearing. I'll call Regal tomorrow. Thanks again. I guess if worse comes to worse I could get the .020 under from ebay and get the crank turned. These engines are kinda rare (D320) and some what hard to get parts for.
     
  5. Bluox

    Bluox Senior Member

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    You better check your part number ,I've never seen Cat use the same number on different size bearings.
    Bob
     
  6. Nige

    Nige Senior Member

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    It appears as though 7M-9283 is a standard size bearing and then 7M9284 is 0.030" undersize, not 0.020".

    upload_2022-6-3_0-33-17.png
    The 7M-9655 Main Bearing set is as per below.
    upload_2022-6-3_0-32-28.png
    upload_2022-6-3_0-28-39.png
     
  7. Old Magnet

    Old Magnet Senior Member

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    Agreed, that's whats shown in my parts book.
     
    DMiller likes this.
  8. svcman717

    svcman717 New Member

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    retired
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    Thats what is shown in my parts book also. Part on Ebay is an aftermarket bearing with the correct part # but some one has written .020 undersize on it. I am very hesitant to buy it. I agree about Cat having different part numbers for the undersized bearings. I was a Cat dealer field serviceman for 37 years.
     
    Nige likes this.