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Bendix compressor issue. Air in coolant

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Pablo-UA, May 29, 2011.

  1. May 29, 2011 #1
    Pablo-UA

    Pablo-UA Road Train Member

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    Compressor on Series 60 14L, '03 Freightliner, air leak to coolant.

    I changed head gaskets, before I did plate resurfasing and... air in coolant in 5 minutes after start, when coolant is over 60 dgr C.

    Need some suggestions... any tips, gentelmen!
     
    Pablo-UA, May 29, 2011
    Pablo-UA, May 29, 2011
    #1
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  3. May 29, 2011 #2
    power freak

    power freak Light Load Member

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    Did you bypass the air comp completely out of the cooling system? Other than a head gasket or cracked liner nothing else comes to mind right now
     
    power freak, May 29, 2011
    power freak, May 29, 2011
    #2
  4. May 29, 2011 #3
    Pablo-UA

    Pablo-UA Road Train Member

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    Yes, I did it first. I got CO2 detector and checkes CO2 in coolant, no CO2- so this is air leak, not EGR coolar ore cyl head gasket, so I bypassed air compressor. No bubbles in overflow reservour.
     
    Pablo-UA, May 29, 2011
    Pablo-UA, May 29, 2011
    #3
  5. May 29, 2011 #4
    king Q

    king Q Road Train Member

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    I cant imagine any place but the air comp head.
    When you bypassed the air comp the bubbles stop.
    So we can safely assume it is the air comp where the air comes from.
    Only once temp at 60 dgr C (140F).
    Gasket and surfaces good.
    I can think of only 2 possibilities.

    (1) Insufficient clamp from head bolts.

    (2) Hair line crack in compressor head.
     
    king Q, May 29, 2011
    king Q, May 29, 2011
    #4
  7. May 29, 2011 #5
    Pablo-UA

    Pablo-UA Road Train Member

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    Ouh, owner wants new compressor, I'm not sure it is up to $1000 budget, and he wants compressor be repared to have spare one, so I will disassembly it againe
     
    Pablo-UA, May 29, 2011
    Pablo-UA, May 29, 2011
    #5
  8. May 29, 2011 #6
    pichu

    pichu Light Load Member

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    hey!! pablo do you check the valve is in the sleeper ?the freightliners have a valve that can open and close the heater with the air, when this fails the air goes to the water and it seems like is the head!! well that's a opinion :biggrin_25521:
     
    pichu, May 29, 2011
    pichu, May 29, 2011
    #6
  9. May 30, 2011 #7
    king Q

    king Q Road Train Member

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    I can remember seen that in another thread now that you mention it.
    Where I'm from we don't have the cold weather you guys do so we don't have all these things like block heaters , heaters for the sleeper etc.
    Can't say 'm sorry about it.
     
    king Q, May 30, 2011
    king Q, May 30, 2011
    #7
  10. May 30, 2011 #8
    Pablo-UA

    Pablo-UA Road Train Member

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    I do not think so, pressure is too high, coolant blown out with air. it is like a cyl. head crack
     
    Pablo-UA, May 30, 2011
    Pablo-UA, May 30, 2011
    #8
  11. May 30, 2011 #9
    Pablo-UA

    Pablo-UA Road Train Member

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    well, about the compressor. It is singele cyl bendix compressor, BA-921 and seems to me I got bad cyl head....

    Does anyone have exploded view with part numbers?
     
    Pablo-UA, May 30, 2011
    Pablo-UA, May 30, 2011
    #9
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