CASE (L.H.) 5A9055 - Caterpillar

Required Tooling
Table 1
Required Tools
Tool Part Number Part Description Qty
A 441-0451 Test Kit (DEF) 1 Test Procedure
Remove the Diesel Exhaust Fluid (DEF) injector from the Clean Emissions Module (CEM). Refer to Disassembly and Assembly, "DEF Injector and Mounting - Remove and Install" for the correct procedure.Note: Leave the coolant lines, DEF line, and the electrical connector connected to the DEF injector.
Illustration 1 g03370846
DEF injector bolted to measuring container lid
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A typical example 441-0451 Kit -Test assembled for the test procedure
Assemble the DEF collection container from Tooling (A). Three bolts and wing nuts will connect the DEF injector to the lid for the collection container.Note: In Tooling (A) there are extensions for the DEF line and the electrical connection if needed.
Turn the key switch to the ON position.
Connect to the electronic service tool.
Illustration 3 g03370860
Click "Diagnostics" in the main menu, then click "Diagnostic Tests".
Illustration 4 g03370869
Proceed by clicking "DEF Dosing System Accuracy Test".
Illustration 5 g03370974
Click "Start" to proceed with the test.Note: With the DEF injector dosing, inspect the spray pattern. The injector spray pattern should be finely atomized and conical.
Illustration 6 g03370954
Typical example
After the test has completed on each occasion, dispose of the collected DEF as per local regulations and mandates.
Repeat the test procedure. Document the quantity of DEF collected.Specification for DEF sprayed during dosing test ... 100 mL to 130 mL
Install the DEF injector assembly. Refer to Disassembly and Assembly, "DEF Injector and Mounting - Remove and Install" for the correct procedure.Note: Use de-ionized water, distilled water, or Diesel Exhaust Fluid (DEF) to lubricate the O-ring seals of the connections of the diesel exhaust fluid lines before installation of the diesel exhaust fluid lines.If DEF has been used to lubricate the O-ring seals of the connections of the diesel exhaust fluid lines. The excess DEF must be cleaned from the connections of the diesel exhaust fluid lines.