ORIFICE AS-DIS 3233950 - Caterpillar

Table 3
Injector Resistance Measurement
Step Instruction Completed
(Yes/No) Results
Comments Units
1 Turn the keyswitch to the OFF position. Allow 2 minutes to elapse before proceeding.
2 Disconnect the DEF injector from the applicable harness.
3 Inspect the connector for damage or debris (if damaged take photo)
4 Measure the temperature of the injector (aluminum body) C
5 Connect two 398-4987 connectors to the DEF injector. The connectors must be used to prevent damage to the DEF injector connector.
6 Measure the resistance of the DEF injector. Ohms
Table 4
Dosing Accuracy Test
Step Instruction Completed
(Yes/No) Results
Comments Units
1 Follow the Testing and Adjusting, Aftertreatment SCR System Dosing - Test.
2 Remove the injector from the DPF outlet.
3 Take a photograph of the DEF injector mount on the DPF outlet and the tip of the DEF injector.
4 Install the injector on the beaker.
5 Run the DEF System Dosing Accuracy test through Cat ET.
6 Use the breaker to measure the amount of fluid from the dosing test. ml
7 Repeat the test to verify consistency. ml
8 Install the injector back onto the DPF outlet.
Illustration 2 g06068068
DEF Injector Resistance Measurement
Illustration 3 g06067706
Injector Mount on DPF (Outlet Sample Picture)
Illustration 4 g06067753
DEF Injector Tip (Sample Picture)
When troubleshooting requests the DEF quality check, DEF injector resistance measurement or Dosing Accuracy Test, please document results in the Tables shown above.
After completing troubleshooting and performing the Aftertreatment System Functional Test, download a new Product Status Report with all ECM's.
Table 5
Injector Failure Report
Step Instruction Completed
(Yes/No) Results
Comments Units
1 Download "Product Status Report" (PSR) from the engine ECM and send to the email address in the instructions.
2 Download "Warranty Report" (WR) from the engine ECM and send to the email address in the instructions.
3 Take a picture of the injector part number / serial number.
4 Follow the correct TSG based on Table 1 and complete tables 2 through 4 when they apply.
5 Perform an "Aftertreatment System Functional Test".
6 Download "Product Status Report" (PSR) from the engine ECM and send to the email address in the instructions.
7 Submit "TIB Check List", "Product Status Reports", DEF injector deposits photographs, CEM deposit photographs, and DEF injector part number and serial number photograph to the email address in the instructions.
Fill out the Injector Failure Report and send all information including product status reports, warranty reports, DEF injector and mount photos, DEF injector part number and serial number and test results to the email address provided above.