Replace Diesel Exhaust Fluid (DEF) Tank Vent- FT4/Stage IV Engines

1. CAUTION: DEF contains urea. Do not get the substance in eyes. In case of contact, immediately flush eyes with large amounts of water for a minimum of 15 minutes. Do not take internally. In event DEF is ingested, contact a physician immediately. Reference Material Safety Data Sheet (MSDS) for additional information.

   IMPORTANT: To determine tractor engine type, see Record Engine Serial Number in Identification Numbers Section of this Operator’s Manual.

   Replace filter after first year of operation and every THREE years thereafter.

   Using incorrect or unapproved aftertreatment components can cause damage to vehicle’s aftertreatment system and reduce ability of aftertreatment system to function correctly. Never interchange aftertreatment components between Interim Tier 4/Stage III B and Final Tier 4/Stage IV equipped vehicles.

   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 may distort some plastic and rubber components.

   NOTE: Procedure is similar for tractors with battery disconnect.
   

   
   RXA0135357-UN-30AUG13

   DEF Tank Shield without Battery Disconnect

   
   RXA0135335-UN-29AUG13

   A - Cap Screws

   B - Shield

   C - DEF Tank Vent Filter

   Remove cap screws (A) and shield (B).

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2. Remove DEF tank vent (C) located above DEF dosing unit.
3. Install NEW DEF tank vent.
4. Reinstall DEF tank shield (B) and DEF tank shield cap screws (A). Tighten to specification.

   Item	Measurement	Specification
   DEF Tank Shield Cap Screws	Torque	37 N·m (27 lb.-ft.)