Tier 4 Engine Technologies
Understanding How They Work, plus Maintenance Tips
CEGR – Cooled Exhaust Gas Recirculation
In CASE C Series Excavators and N Series Loader Backhoes
Diesel Particulate Filter Tips
Performance
- The DPF works most efficiently at full throttle, as the engine is burning cleaner while the rpm is constant.
Maintenance
- The DPF is designed to last for a minimum of 3,000 – 3,500 hours.
- The filter is positioned for easy access on all machines to facilitate service when required.
- The DPF is cleaned using a regeneration process, which occurs while the filter is on the machine.
- Low ash CJ-4 engine oil is required.
Operation
- There are no changes needed in general equipment operation.
- Only use ultra-low sulfur fuel.
SCR – Selective Catalytics Reduction
In CASE F Series Wheel Loaders
Diesel Exhaust Fluid Tips
Maintenance
- Refilling the DEF tank can be incorporated into a regular maintenance or refueling routine.
- Always be proactive about checking DEF levels.
- Change supply module filters at required intervals.
- Low ash CJ-4 engine oil is not required but can be used.
Performance
- SCR system is separate from the main engine function and does not affect horsepower or torque.
- RSCR technology is highly efficient and reduces fuel consumption.
Operation
- Each machine includes a DEF gauge and a warning signal when DEF level is low, similar to a fuel gauge.
- Only use ultra-low sulfur fuel.
Purchasing DEF
- DEF is available in four container sizes from CASE: 2.5 gallon, 55 gallon drum, 275 or 330 gallon totes.