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Leaking Air Governor

Discussion in 'Trucks [ Eighteen Wheelers ]' started by JimmyWells, Apr 1, 2017.

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  1. Apr 1, 2017 #1
    JimmyWells

    JimmyWells Road Train Member

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    I have some air leaking from the two bolts on the end of the governor. I tried tightening them up to no avail. Is the governor bad? Doesn't look like there's seals behind the two bolts but instead lock washers with teeth. I also tried looking up the parts diagram but CAT doesn't seem to list the governor for some reason.

    https://parts.cat.com/AjaxCATPartLookupResultsView?catalogId=10051&requestType=3&langId=-1&link=WOMNLogez9hti3/gQyt0QPANK8lngcP9RMkbsu8srVA4IE5vWOlJRBBCf6OyAVerk5vavaNjvzoHGBLKrEfA7w==&storeId=21801&serialNumber=5EK82590
     

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    JimmyWells, Apr 1, 2017
    JimmyWells, Apr 1, 2017
    #1
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  3. Apr 1, 2017 #2
    boneebone

    boneebone Road Train Member

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    The price of a Governor is inexpensive enough that replacing it is a No-Brainer.
     
    boneebone, Apr 1, 2017
    boneebone, Apr 1, 2017
    #2
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  4. Apr 1, 2017 #3
    062

    062 Road Train Member

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    The gasket is between the governor and compressor head. It's not a cat part. Search for d2 governor gasket.
     
    062, Apr 1, 2017
    062, Apr 1, 2017
    #3
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  5. Apr 1, 2017 #4
    Lethalsmirk

    Lethalsmirk Bobtail Member

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    i have a Volvo, my air was leaking i changed governor ($12) but still leaked, then i checked air dryer filter ($30) still leaked, finally replaced air dyer ($320)....no more leak
     
    Lethalsmirk, Apr 1, 2017
    Lethalsmirk, Apr 1, 2017
    #4
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  7. Apr 1, 2017 #5
    SAR

    SAR Road Train Member

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    image.jpeg

    I bought this at a Napa store, it's got everything you need in there, new governor, gasket, and plugs. I would just replace the one you got that is leaking. Like someone said they are very inexpensive. Before you take the old one apart just remember where all the lines and plugs go so you can match up to new one. Good luck
     
    SAR, Apr 1, 2017
    SAR, Apr 1, 2017
    #5
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  8. Apr 1, 2017 #6
    JimmyWells

    JimmyWells Road Train Member

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    Looks like I'm replacing the governor this week! Thanks for the help, gentlemen.
     
    JimmyWells, Apr 1, 2017
    JimmyWells, Apr 1, 2017
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  9. Apr 1, 2017 #7
    JimmyWells

    JimmyWells Road Train Member

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    I looked at the diagram for the governor and noticed the bolts where I'm seeing the leak from are actually going through the whole until to the other side just for mounting purposes. Why would it be leaking there? Seems like an unlikely place to leak to me.
     
    JimmyWells, Apr 1, 2017
    JimmyWells, Apr 1, 2017
    #7
  10. Apr 1, 2017 #8
    AModelCat

    AModelCat Road Train Member

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    Could be a hairline crack between the air side of the governor and the bolt hole. Could also be that the gasket between the governor and the compressor has failed and the easiest spot for the air to push out is through the bolt holes.
     
    AModelCat, Apr 1, 2017
    AModelCat, Apr 1, 2017
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  11. Apr 1, 2017 #9
    JimmyWells

    JimmyWells Road Train Member

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    Now it makes sense. It's getting replaced this week. Thanks.
     
    JimmyWells, Apr 1, 2017
    JimmyWells, Apr 1, 2017
    #9
  12. Apr 1, 2017 #10
    062

    062 Road Train Member

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    Keep the old one it's most likely good. Just the gasket leaking.
     
    062, Apr 1, 2017
    062, Apr 1, 2017
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