We're focused on adding the right engine technologies at the right time to maintain and maximize performance, and meet Final Tier 4/Stage IV emissions regulations. This way, you don't compromise on power, reliability, or ease of operation while meeting emissions requirements. Our emissions control technologies for PowerTech™ Final Tier 4/Stage IV engines, 56 kW (75 hp) and above, include cooled exhaust gas recirculation (EGR), exhaust filters, and selective catalytic reduction (SCR).
The John Deere Advantage
Our Integrated Emissions Control system for Final Tier 4/Stage IV is an optimized platform utilizing a variety of emissions control components, such as cooled EGR, smart exhaust filters, and SCR technology to meet emissions regulations while delivering maximum performance, reliability, and durability
Our cooled EGR approach leverages the proven fuel efficiency of our PowerTech engine platform, and considers not only fuel economy, but also total fluid economy. Our Final Tier 4/Stage IV engines will meet or improve upon the current total fluid economy of our Interim Tier 4/Stage III B engine models.
We've used cooled EGR since 2005 and have established a proven record of reliability. We have accumulated significant operating hours with our smart exhaust filter technology, and have a dedicated in-house after-treatment team optimizing our own SCR solution. All components used in our Integrated Emissions Control system are designed to handle the rigors of off-highway applications.
We design, manufacture, and service the complete equipment package, maximizing performance, operator convenience, total fluid economy, and overall value to you.
Our highly trained technicians stay on top of changing engine technologies and service techniques.
How FT4 affects you
Proper maintenance and operation will ensure maximum durability and reliability from your FT4 engine. Although John Deere FT4 engines are easy to maintain, there are still maintenance and operating procedures to follow.
We use an exhaust filter made up of a diesel oxidation catalyst (DOC) and a diesel particulate filter (DPF) to reduce particulate matter (PM). John Deere engines and exhaust filter components are designed for uninterrupted operation using passive regeneration, a natural cleaning process where engine exhaust temperatures are sufficient to oxidize the PM trapped in the exhaust filter. The process is continuous during normal engine operating conditions — greater than 30 percent load factor — and is the most fuel-efficient way to clean.
If conditions (temperature, load, or speed) for passive regeneration cannot be achieved, then PM must be removed using active regeneration, also an automatic cleaning process. This requires injecting a small quantity of fuel into the exhaust stream for a short duration and elevating exhaust temperatures to clean the filter. It's important to remember that, in most applications, active regeneration cleaning occurs only when passive regeneration isn't possible based on temperature, load and speed. It serves as a backup system. In either case, regeneration does not impact machine operation.
Exhaust Filter Servicing
Maintenance to remove accumulated ash is a key system health component of your FT4 exhaust filter. Ash removal from John Deere FT4 machines is condition based, not hour based. The time when this service should actually be performed will be flagged by your machine with a dash indicator or as required by diagnostic codes. Field results on John Deere machines equipped with a DPF have shown this service is often not required until the first major engine overhaul. Actual intervals will be a result of your specific machine application and regular maintenance practices, such as the lube oil used. A certified exhaust filter–cleaning facility must perform filter-ash removal.
DEF Filter Maintenance
There are filters for both the DEF-supply module and the DEF-tank breather. These filters should be changed every 4,000 hours or three years.
Engine Crankcase Filter maintenance
Vent tubes, common in earlier-tier machines, have been replaced by the open-crankcase-ventilation system on John Deere engines. No service is required for this component on Deere engines rated above 130 kW (175 hp). For engines rated below 130 kW (175 hp), the open crankcase-ventilation system must be serviced every 2,000 hours.
Fluids and Other Maintenance
Ultra-Low Sulfur Diesel (ULSD)
Only use ULSD fuel in your IT4 engine, and fill your machine at the end of the day to reduce the chances of condensation from overnight cooling. Inspect and maintain fuel filters on the machine and storage tanks. Follow good bulk fuel storage practices. Ask your local dealer for details on fuel specifications and recommendations.
If you opt to run biodiesel, we suggest using a 5-percent blend (B5), but a biodiesel concentration of up to a 20-percent blend (B20) can be used. All biodiesel must meet ASTM D6751 (U.S.), EN14214 (EU), or equivalent specifications.
Use only our approved fuel additives, found in your operator's manual. Regardless of what fuel or additive you use, frequent fuel sampling and analysis is a good fleet-management practice that we highly recommend.
Use only low-ash CJ-4 oil such as John Deere Plus-50™ II. This oil reduces the ash in your exhaust filter and prolongs intervals between filter ash removal service. We also recommend frequent oil sampling and analysis.
Our IT4 machines will notify your operator if the coolant level is low. Use only Cool-Gard™ II antifreeze developed specifically for your IT4 engine.
Diesel Exhaust Fluid (DEF)
The best way to ensure you are getting high-quality DEF for your engine or equipment is to purchase DEF through your John Deere dealer. When you buy DEF from Deere, you can be confident you are getting a high-quality product that will provide maximum performance while protecting your engine investment. Other DEF may be used only if it meets certification.
DEF should be stored in a sealed container, in the shade where possible, and out of extreme temperatures. DEF freezes at 12 deg. F (–11 deg. C) but may be used upon thawing. Exposure to high heat for sustained periods can degrade the quality of DEF. When stored properly, DEF has a shelf life similar to oils and coolants. DEF should be crystal clear with a light ammonia smell. If DEF appears cloudy or has a colored tint or a profound ammonia smell, it should not be used.
Final Tier 4 Video