white banner donaldson

Installing a Threaded Mount Air Filter Restriction Gauge

How do air filter service indicators work?

Air Filter Service Indicators - View the Filter Minder® Demo.

Normal FIlter

The Filter Minder® is installed on the air cleaner or air induction piping so that it has access to clean filtered air (between air filter and engine).

The air filter service indicator is a simple device that accurately measures the air induction system filter restriction. It measures and remembers the highest restriction at maximum air flow, which is called full load condition. This condition occurs during hard acceleration, or while pulling a trailer, etc.

 

Air Filter Some RestrictionThe indicator is easy to read. As the air filter plugs, and restriction increases, the yellow position indicator moves in the clear window and locks at several points. When it reaches and locks in the red zone, the air filter should be changed and the indicator reset to zero. Reset the indicator by pushing the yellow reset at the end of the indicator.

Another type of air filter service indicator is the Filter Minder® Single Position Service Indicator. The clear window turns red when maximum recommended restriction has been reached.

 

Air Filter Needs ChangedEvery air induction filter system has a clean filter or initial restriction reading. Depending on air flow volume, filter media, and air filter size, there may not be enough restriction to show a reading on the gauge with a new filter, or the position indicator may move one or two positions. Do not be alarmed if there is some restriction with a new filter as this is not unusual.

Air filters usually show low restriction through most of their service life. As the air filter nears the end of available service life, filter restriction will increase more rapidly, and the yellow position indicator on the Filter Minder® will move more rapidly towards the red zone. High humidity or rainy conditions may slightly increase air filter restriction.

The Filter Minder® is calibrated in inches of water vacuum per the engine manufacturer's recommendations.

Use of the Filter Minder® helps maximize filter service life, prevents excess fuel usage from overly restricted filters, and saves on operational costs.


 

Installation - Step One

  • Default
  • Title
  • Date
  • Filter Minder® Product Portfolio
  • The air filter restriction gauge should be installed on the air filter housing (clean air side).

    " data-mosaic-order-date="">
    Step 1A

    The air filter restriction gauge should be installed on the air filter housing (clean air side).

  • Select the location for the gauge and check hood clearance.

    " data-mosaic-order-date="">
    Step 1B

    Select the location for the gauge and check hood clearance.

  • The gauge may be mounted vertically or horizontally.

    " data-mosaic-order-date="">
    Step 1C

    The gauge may be mounted vertically or horizontally.

Installation - Step Two

  • Default
  • Title
  • Date
  • Filter Minder® Product Portfolio
  • Open the air cleaner housing and drill an 11/16" hole.

    " data-mosaic-order-date="">
    Step 2A

    Open the air cleaner housing and drill an 11/16" hole.

  • IMPORTANT: Do not let shavings fall into the intake manifold.

    " data-mosaic-order-date="">
    Step 2B

    IMPORTANT: Do not let shavings fall into the intake manifold.

  • A spade bit or similar cutting implement works well for plastic housings.

    " data-mosaic-order-date="">
    Step 2C

    A spade bit or similar cutting implement works well for plastic housings.

Installation - Step Three

  • Default
  • Title
  • Date
  • Filter Minder® Product Portfolio
  • Press the rubber grommet into the 11/16" hole (drilled in Step Two) until it seats into the proper position, locking in place.

    " data-mosaic-order-date="">
    Step 3A

    Press the rubber grommet into the 11/16" hole (drilled in Step Two) until it seats into the proper position, locking in place.

  • Push the gauge into the rubber grommet until fully seated. If needed, use water or a mild soap solution to help insertion.

    " data-mosaic-order-date="">
    Step 3B

    Push the gauge into the rubber grommet until fully seated. If needed, use water or a mild soap solution to help insertion.

  • Do not use solvents, oil, or other petroleum based products, as they can crack the clear housing of the Filter Minder®.

    " data-mosaic-order-date="">
    Step 3C

    Do not use solvents, oil, or other petroleum based products, as they can crack the clear housing of the Filter Minder®.

Installation - Step Four

  • Default
  • Title
  • Date
  • Filter Minder® Product Portfolio
  • Close the air cleaner cover, again taking care to prevent any shavings from entering the manifold. Ensure the Filter Minder® is securely seated.

    " data-mosaic-order-date="">
    Step 4A

    Close the air cleaner cover, again taking care to prevent any shavings from entering the manifold. Ensure the Filter Minder® is securely seated.

  • Unclamp the entrance to the air cleaner port and, with the engine running, slowly close off the opening.

    " data-mosaic-order-date="">
    Step 4B

    Unclamp the entrance to the air cleaner port and, with the engine running, slowly close off the opening.

  • Watch the Filter Minder® gauge ratchet up to indicate restriction. Push the reset button and you're done.

    " data-mosaic-order-date="">
    Step 4C

    Watch the Filter Minder® gauge ratchet up to indicate restriction. Push the reset button and you're done.