Volvo RWD 120-130 Forum

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Cleaning PCV 120-130 1967

posted by  someone claiming to be Aaron on  Tue Jun 26 08:28 CST 2012 [RELATED]

Hello,
I think my 67 122 is due for a PCV service. How do I go about removing the red oil trap to clean that out? I bought a new PCV valve for it as well. Do the hoses in between the valve just pull apart?
Thanks, Aaron.








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    Cleaning PCV 120-130 1967

    posted by  walrus3 on  Tue Jun 26 08:36 CST 2012
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    last visit: Mon Dec 2 14:20 CST 2013
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    There is one ΒΌ"-20 UNC bolt at the bottom ear of the flange that holds it to the block.
    Use a 7/16" wrench to take it out and it pulls right off. May be gummed in the hole.
    You can clean it with mineral spirits, paint thinner, charcoal starter fluid, etc.
    Plug both holes and shake it good and hard, then drain. May have to do it more than once.
    If the hoses don't have clamps you can normally pull them apart. May not be easy.
    Twisting usually helps.
    You can clean the PCV valve also, same way as the oil trap.
    --
    George Downs Bartlesville, Oklahoma








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      Cleaning PCV 120-130 1967

      posted by  someone claiming to be Aaron on  Sat Jun 30 08:07 CST 2012 [RELATED]

      Thank you George, it was a very simple procedure thanks to your instructions.








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        Cleaning PCV 120-130 1967

        posted by  Amazon66 on  Sat Jun 30 11:20 CST 2012
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        last visit: Tue Sep 23 12:27 CST 2014
        [RELATED]

        While you're there, and it's all clean, (George made it easy) you might repaint trap Engine Red and put on new flat o ring seal (cheap) and new hose valve to oil trap (not cheap) when reinstalling. The hose from PCV valve to oil trap is different ODs top/bottom. Hose cracks over time.

        I was also told years back to NOT use hose clamps on PVC valves/hoses, the theory being if pressure did build up in system you would actually prefer the hose to pop off rather then force the pressure into engine/carb...just a thought, no clamps and never had one pop off.






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