HOUSING 1T0949 - Caterpillar

The Diesel Exhaust Fluid (DEF) filter is located on the DEF tank. The DEF tank is located in the tool box on the right side of the machine.
Illustration 1 g03332612
Typical Example
Personal injury can result from improper handling of chemicals.Make sure you use all the necessary protective equipment required to do the job.Make sure that you read and understand all directions and hazards described on the labels and material safety data sheet of any chemical that is used.Observe all safety precautions recommended by the chemical manufacturer for handling, storage, and disposal of chemicals.
Ensure that the engine is stopped before any servicing or repair is performed.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Cat Dealer Service Tool Catalog" or refer to Special Publication, PECJ0003, "Cat Shop Supplies and Tools Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
Remove the diesel exhaust fluid (DEF) filter cap (3) with a 27 mm (1.06 inch) wrench.
Remove the rubber cone insert (2) from the DEF filter (1).
Illustration 2 g03332637
Typical Example
Insert the DEF filter removal tool (4) into the DEF filter (1) and remove the DEF filter (1).Note: Avoid twisting the diesel exhaust fluid filter upon removal. Twisting may cause a tear.
Clean the area around the filter housing.
Lubricate seals of new DEF filter (1) with diesel exhaust fluid or distilled water.
Install new DEF filter (1) and rubber cone insert. Torque the filter to 20 5 N m (14.8 3.7 lb ft) with a 27 mm (1.06 inch) wrench.Note: Avoid twisting the diesel exhaust fluid filter upon installation. Twisting may cause a tear.