After Participating in the above course, the Technician will be able to:

• Identify the emissions being reduced in Tier IV Interim and Final.
• Describe Caterpillar’s solutions to reduce emissions for Tier IV Interim and Final.
• Locate and identify all the components related to Tier IV Interim and Final on a variety of Caterpillar engines.
• Describe the function and purpose of each component on the Tier IV Interim and Final engines.
• Trace the exhaust flow in the NOx Reduction System (NRS).
• Identify different fuel systems use on Tier IV Caterpillar engines.
• Trace fuel flows on each fuel system for Tier IV engines.
• Identify and explain the function of the lights and switches as they relate to Tier IV Interim and Final.
• Describe the warning methodology as the soot load increases from 0% to 140%.
• Identify the different regeneration types and at what soot level they become available.
• Explain why Diesel Exhaust Fluid (DEF) was chosen.
• Trace the exhaust gas in the Selective Catalytic Reduction (SCR) system.
• Describe the process for preventing NH3 slip, and NOx slip with in SCR system.
• Summarize the safety concerns associated with SCR system.
• Set up and record DATA Logs pertinent to T4 using Cat ET
• Develop graph sets based on recorded DATA Logs and interpret graph.
• Troubleshoot the CAN BUS network attached to the T4 engine NOX, HC and PM reduction systems.