ACTUATOR AS-GOVERNOR 6I2160 - Caterpillar

Determine the Type of Cleaning System for the Nozzles Inside the ARD Combustion HeadDetermine the type of cleaning system for the nozzles inside the ARD combustion head.Results:The ARD purge air system is used to clean the nozzles.Repair:Contact your local Caterpillar Technical Communicator for information on updating the system.STOPResults:An electric heating element is used to clean the nozzles.Proceed to Step 5.
Determine DPF Differential PressureUse the Caterpillar Electronic Technician (ET) to view the differential pressure across the DPF. If there are two filters, view the differential pressure across both of the filters. The differential pressure is indicated by the following parameters:
"Diesel Particulate Trap #1 Differential Pressure"
"Diesel Particulate Trap #2 Differential Pressure"You may need to create a new group in order to view these parameters.Start the engine. Increase the engine speed to 1400 rpm. Monitor the differential pressure for 30 seconds. Stop the engine.If the differential pressure exceeds 15.0 kPa (2.1 psi), run a regen attempt to lower differential pressure.If a regen cannot be completed, do the following steps:
"Nozzle Heater Current Test"
Remove and clean ARD Flame Temperature sensor.
Perform a nozzle heater cycle override.
After performing above steps repeat up to two more regen attempts.Results:The differential pressure is less than 15.0 kPa (2.1 psi).Repair:Proceed to Step 6.Results:The differential pressure is greater than 15.0 kPa (2.1 psi).Repair:Replace with the appropriate DPF. Return the vehicle to service.
Perform the "Engine Air System Verification Test"Perform the "Engine Air System Verification Test". Refer to Troubleshooting, "Air System Verification Test" for information on the test, if necessary.Troubleshoot the test results if the test results are unacceptable. Then, proceed to "ARD Combustion Air –Test".Proceed to Step 7 if the results of the "Engine Air System Verification Test" are acceptable.
Inspect the DPFPerform this Test Step if all of the following conditions are true:
The ARD disable switch was not disabling the ARD.
The results of the "Engine Air System Verification Test" are acceptable.
Remove the inlet section from the DPF. Inspect the inside of the inlet section and the front face of the DPF. Look for oil and for excessive soot.The presence of a small amount of soot is a normal condition. Contact your local Technical Communicator for Caterpillar On-highway Truck Engines if you suspect that the amount of soot is excessive. Continue with this procedure after you have received guidance from the Technical Communicator.If oil is found, inspect the outlet of the turbocharger. Contact your local Technical Communicator for Caterpillar On-highway Truck Engines if oil is found. Continue with this procedure after you have received guidance from the Technical Communicator. Clean the oil from the inside of the inlet section of the DPF and the front face of the DPF. Assemble the DPF. Use Cat ET to disable