Understanding How They Work, Plus Maintenance Tips
CEGR
Cooled Exhaust Gas Recirculation
In CASE backhoes, skid steeers, CTLs and C series excavators
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 low sulfur fuel.
SCR
Selective Catalytic Reduction
In CASE dozers, backhoes, wheel loaders and D series excavators
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.
- SCR 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 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.