volvo d12 engine

Discussion in 'Volvo Forum' started by gsexpress2010, Oct 13, 2014.

  1. gsexpress2010

    gsexpress2010 Bobtail Member

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    Jun 8, 2013
    0
    hi everyone
    i have a 2003 volvo with d12 engine suddenly ive been having a problem
    when my air compressor is on air is building up and going to the radiator
    when i get 120 psi and the govener kicked in shut off the air compressor the air stops going to the radiator
    when i have 30 psi or less theres no air
    can someone please tell me if i need a new air compressor or something else
    thanks for the help
     
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  3. Helowrenchturn2

    Helowrenchturn2 Medium Load Member

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    Apr 23, 2013
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    Yep. You can get a new head and gasket but it costs almost as much as a new compressor
     
  4. gsexpress2010

    gsexpress2010 Bobtail Member

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    Jun 8, 2013
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    thanks for the reply
    should i buy a new compressor or one that is rebuilt
     
  5. v6killer

    v6killer Medium Load Member

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    Dec 6, 2010
    ChicagoLand
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    New one works best.
     
  6. Pablo-UA

    Pablo-UA Road Train Member

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    what is the compressor #? There were Wabco compressors with unservisabke head, only change!

    Gaskets are cheap and available everywhere
     
  7. gsexpress2010

    gsexpress2010 Bobtail Member

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    Jun 8, 2013
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    Yes is wabco compressor (85013203)
     
  8. Pablo-UA

    Pablo-UA Road Train Member

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    Look for Wabco part #, it starts with 412 xxx xxx xxx
     
  9. Pablo-UA

    Pablo-UA Road Train Member

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    I think it is 4123520307 (single cylinder with two cylinder head)
     
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