Replace Diesel Exhaust Fluid (DEF) Tank Vent Filter—Final Tier 4 and 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.

   Initial replacement 1500 hours of operation or 1 year whichever comes first. Thereafter, replace every 4500 hours of operation or every 3 years, whichever comes first.

   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.
   

   
   RXA0141965-UN-02JUN14

   Panel

   
   RXA0142031-UN-03JUN14

   A - Cap Screws

   B - Panel

   C - DEF Tank Vent Filter

   Remove cap screws (A) and open panel (B).

---

2. Remove DEF tank vent (C) located above DEF dosing unit.
3. Install new DEF tank vent.
4. Close panel and tighten cap screws.

   Item	Measurement	Specification
   Cap Screws	Torque	73 N·m (54 lb·ft)