Inner filter change on donaldson air filter

Discussion in 'Mechanic and Repair' started by weeze, Dec 26, 2012.

  1. weeze

    weeze LawnSite Fanatic
    Messages: 12,741

    yeah my inner filter is blue with clear square webbing around it. there's no holes in it. the blue part looks like felt or something similar. it's not foam or paper. i guess i'll change it if i see hole start to form lol. i only blow the outer filter out every 50hrs.
  2. weeze

    weeze LawnSite Fanatic
    Messages: 12,741

    here's some pics:


  3. Jimslawncareservice

    Jimslawncareservice LawnSite Platinum Member
    from mn
    Messages: 4,143

    I have one of those in mine of course, but I have several in the same shape with a white cotton looking stuff where your blue area is
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  4. laman

    laman LawnSite Senior Member
    Messages: 351

    Never seen the blue one. I have the white cotton looking one in my lawn mower.
  5. Richard Martin

    Richard Martin LawnSite Fanatic
    Messages: 14,699

    The only reason for the inner filter is so dust and dirt doesn't enter the intake tract when the outer filter is serviced. If the inner filter is getting dirty then something is wrong.

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