C3.4B Industrial Engine Caterpillar

Illustration 1	g03423833
Typical example

Ensure that the correct specification Diesel Exhaust Fluid (DEF) is used. Ensure the cleanliness of the DEF, refer to this Operation and Maintenance Manual, "Fluid Recommendations" for more information.

Care should be taken when dispensing DEF. Spills should be cleaned immediately. All surfaces should be wiped clean and rinsed with water.

DEF that has been split will crystallize when the water within the liquid evaporates. Split DEF will attack paint and metal. If DEF is split, wash the area with water.

Caution should be used when dispensing DEF near an engine that has recently been running. Spilling DEF onto hot components may cause the release of ammonia vapors. Do not breathe ammonia vapors. Do not clean up any spills with bleach.

Ensure that the DEF tank is full before starting work.

1. Before filling the DEF tank, ensure that the DEF lines have been purged. Purging of the DEF lines will take 2 minutes, after the engine has stopped. Only after purging the DEF lines should the DEF tank be filled.

2. Ensure that the DEF cap (1) and the surrounding area is clean and free from dirt. Ensure that all equipment use in filling the tank is clean and free from dirt.

3. Remove the DEF cap from the tank.

4. Fill the tank with the required amount of DEF. Ensure that dirt is not introduced into the tank during filling. Do not over fill the tank. The DEF will require room for expansion.

   Note: Always fill the DEF tank on level ground. Cold weather can affect DEF, refer to this Operation and Maintenance Manual, "Diesel Exhaust Fluid in cold Weather" for more information.

5. The opening on the DEF tank (2) is a special diameter. Ensure that the correct nozzle is used when filling the DEF tank.

6. Install the DEF cap. Check visually the DEF tank for leakage.