Cleaning the ConMet Fuel Separator Sight Bowl

cen mm 47.02.000

The only maintenance necessary on ConMet fuel separators is to clean the sight bowl, if equipped. See Fig..

    Warning: Diesel fuel is flammable and can ignite if exposed to an open flame, intense heat, or other ignition source. Do not drain fuel near, or expose fuel vapor to open flame or intense heat. Exposure to open flame or intense heat could start a fire, possibly resulting in personal injury or property damage. When working on a fuel system, have a fire extinguisher within easy reach.

  1. Drain the fuel separator.
  2. Unscrew the sight bowl from the fuel separator.
  3. Wipe the sight bowl clean using a soft cloth.
  4. Lubricate the gasket with a film of oil, and reinstall it on the sight bowl. If the gasket appears dry-rotted or damaged, replace the gasket.
  5. Lightly lubricate the threads on the sight bowl with oil, then thread the sight bowl into the bottom of the fuel separator.
  6. Hand-tighten until the gasket is in full contact with the fuel separator, then tighten an additional 1/4 to 1/3 turn.

    1. Vacuum Breaker/Drain Valve

    2. Reducer Bushing

    3. Mounting Brackets

    4. O-Ring (when equipped with heater)

    5. Stainless Steel V-Clamp (when equipped with heater)

    6. Heater Assembly

    7. Gasket

    8. Sight Bowl Heater Rod

    9. Sight Bowl Assembly

    10. Vacuum Breaker/Drain Valve

    Fig. 1, ConMet Fuel Separator

  7. Check that the drain valve is tightened and closed.
  8. Prime the fuel separator.
    1. Remove the vacuum breaker fitting and fill the unit with diesel fuel.
    2. Replace and close the vacuum breaker fitting when the unit is full of fuel.

      Important: The fitting must be air-tight and the valve closed.
    Note:
    Parent topic: Replacement of the Fuel Separator Sight Bowl Cleaning and Element
    Document Number: 0000122437
    Manual Publication Date: 2025-02-11
    Topic Publication Date: 2024-06-04