DEF Tank - Clean Screen on Filler Neck

CAUTION: Avoid contact with eyes. If there is contact, immediately flush eyes with large amounts of water for at least 15 minutes. Reference the Materials Safety Data Sheet (MSDS) for additional information.

IMPORTANT: If DEF is spilled or contacts any surface other than the storage tank, immediately clean the surface with clear water. DEF is corrosive to painted and unpainted metallic surfaces and can distort some plastic and rubber components.

Spilled DEF, if left to dry or if only wiped away with a cloth, leaves a white residue. Improperly cleaned DEF spill may interfere with diagnosis of selective catalytic reduction (SCR) system leakage problems.

  1. Remove the cap of the DEF tank.

  2. Turn filler neck (A) counterclockwise with a suitable tool and remove.

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    Sample Illustration

    A - Filler Neck

    B - Screen


  3. Clean screen (B) with distilled water or DEF and check for damage. Replace damaged parts.

  4. For installation, reverse the removal procedure.

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