Crankcase inlet air cleaner removal

Engine, Transmission & Driveline

  1. Analog Kid

    Analog Kid Member FCBO Gold Member

    Messages:
    107
    Likes Received:
    86
    Joined:
    Dec 22, 2016
    Location:
    Herndon, VA
    So according to the FSM, the crankcase inlet air cleaner should be removable from the valve cover. However I've been tugging and pulling on it but it doesn't want to budge.

    What's the trick here?

    IMG_3200.JPG
     
  2. commando1

    commando1 Sergeant at Arms FCBO Gold Member

    Messages:
    30,996
    Likes Received:
    16,343
    Joined:
    Mar 10, 2011
    Location:
    Fumbuck County - Sebring, Florida
    Pull harder.
    The rubber grommets usually turn into titanium after all these years.
    Sometimes you have to replace the old grommet with a fresh new one.
     
    • Agree Agree x 8
    • Thanks! Thanks! x 1
  3. CBODY67

    CBODY67 Senior Member

    Messages:
    3,100
    Likes Received:
    659
    Joined:
    Mar 27, 2011
    Agree with the hardened grommets situation! Try pulling at an angle rather than just "straight up". This would be better if the covers were still attached to the head/engine? Possibly, as a new grommet might be desired anyway, you might cut the inner lip off from the inside of the valve cover?

    The reason for desired removal? Just curious.

    CBODY67
     
  4. Analog Kid

    Analog Kid Member FCBO Gold Member

    Messages:
    107
    Likes Received:
    86
    Joined:
    Dec 22, 2016
    Location:
    Herndon, VA
    Well....I'm worried it might be clogged up.

    I can see some sludge in the inlet vent and poking around in there it feels spongey. I'm assuming there is some type of filter or baffle inside. Not sure if that can be cleaned or if I should just replace the whole thing.

    Although the replacements I see online look different and I'd like to keep as much originality here as possible.
     
  5. Big_John

    Big_John Illegitimi non carborundum FCBO Gold Member

    Messages:
    10,696
    Likes Received:
    5,636
    Joined:
    May 21, 2013
    Location:
    Marcellus, NY
    Squirt a bunch of silicone spray around the base, then get a big screwdriver and wedge it between the base and the valve cover. It will take some prying, twisting, yanking and cussing, but it will come out. If you can get it up far enough, cutting the grommet might help.

    As was said, replace the grommet.
     
  6. CBODY67

    CBODY67 Senior Member

    Messages:
    3,100
    Likes Received:
    659
    Joined:
    Mar 27, 2011
    Thanks for the reply and information.

    There is probably either a baffle or a type of filter. The replacements probably reflect a model year's item from a newer vehicle with a similar item on them. I fully understand the desire to keep things as they were produced.

    If you might have seen the GM FB-59 filter they used on their air cleaners, to filter air going to the crankcase, that's probably what's inside the item you have. It probably can be cleaned, via backspraying brake cleaner into the bottom side (with it turned upside down), but getting a "complete" clean might take a while. Using a parts washer might work better, but still no way to know it's completely clean inside.

    On the other hand, as long as the filter flows air, plus that if any dislodged items from the filter might remain on top of the filter, they won't fall into the cylinder heads, some things to consider. In other words, flush it until it what comes out is clean, remove any residual oil around the seams, clean it up, add a new grommet, repaint as needed, then reinstall.

    Hope this might help,
    CBODY67
     
    • Thanks! Thanks! x 1
  7. jct

    jct Senior Member

    Messages:
    2,378
    Likes Received:
    1,263
    Joined:
    Jun 11, 2015
    Location:
    indianapolis
    heat gun around the base/soak it in near boiling water
     
    • Thanks! Thanks! x 1
  8. commando1

    commando1 Sergeant at Arms FCBO Gold Member

    Messages:
    30,996
    Likes Received:
    16,343
    Joined:
    Mar 10, 2011
    Location:
    Fumbuck County - Sebring, Florida
    He's gonna need a BIG pot.
     
    • Like Like x 2
  9. cbarge

    cbarge Senior Member FCBO Gold Member

    Messages:
    1,504
    Likes Received:
    1,653
    Joined:
    Nov 22, 2010
    Location:
    Kingston Ontario Eh?
    I used to soak and flush out my breather in Varsol.
    Let it dry overnight and add a few drops of motor oil.Done
    This was actually mentioned in some FSM back in the day.
     
    • Thanks! Thanks! x 2
    • Agree Agree x 2
  10. Analog Kid

    Analog Kid Member FCBO Gold Member

    Messages:
    107
    Likes Received:
    86
    Joined:
    Dec 22, 2016
    Location:
    Herndon, VA
    Done...just had to put some muscle into it. Got the PCV valve off too.

    Thanks guys...
     
    • Like Like x 1
    • Thanks! Thanks! x 1