CASE Construction Equipment 821F and 921F wheel loaders now meet federal Tier 4 Final emissions standards. As with the Tier 4 Interim models, CASE has equipped each model with a selective catalytic reduction (SCR)-only solution that treats emissions separately with Diesel Exhaust Fluid (DEF) and does not require the engine to re-circulate exhaust gas.
This optimizes combustion and machine performance, lowers engine temperatures, and eliminates maintenance and downtime associated with filter replacement and regeneration. It also helps lower fuel consumption. This is all accomplished with excellent throttle response, unrestricted horsepower and powerful breakout force for improved profitability and optimal productivity in wheel loader applications.
“CASE was the first to implement SCR into our Tier 4 Interim machines because that solution makes the most sense for wheel loaders based on the inconsistent engine loads placed on the machine throughout its regular work cycle,” said Philippe Bisson, brand marketing manager, CASE. “It also prepared everyone, from our dealer network to our customers, for the technology change ahead of other manufacturers, placing them in the best position to succeed as the Tier 4 Final regulations come into effect.”
Heavy on Horsepower
Each new Tier 4 Final wheel loader delivers best-in-class horsepower with a 6.7-liter Tier 4 Final-certified engine that also provides quick throttle response and impressive torque. The 821F and 921F wheel loaders produce 212 and 241 net peak horsepower, respectively. The 821F features a range of buckets from 3.2 to 4.5 cu. yd.; and the 921F features a bucket range from 3.8 to 4.75 cu. yd.
While the new 821F and 921F wheel loaders meet Tier 4 Final requirements and set the standard for horsepower performance within each size class, they also offer the same fuel-saving advantages of the Tier 4 Interim models. Each machine provides up to 10 percent increase in fuel economy over the previous E Series models.
Additional fuel savings of up to 30 percent can be achieved with a standard engine shutdown feature that allows the operator to limit engine idle time. An optional efficiency package provides additional fuel savings with features such as a five-speed lockup transmission, axles with auto-locking differential and advanced system programming.
The Case for SCR
With SCR, these Tier 4 Final wheel loaders achieve lower temperatures in the engine exhaust system while optimizing combustion to achieve greater fuel economy and peak horsepower. The SCR-only approach on the new wheel loaders also contributes to machine uptime. It eliminates the need for manual diesel particulate filter (DPF) regeneration and the associated downtime that can occur with wheel loaders that use cooled exhaust gas recirculation (CEGR) technology to meet emission standards.
Engineered for Productivity
As with previous models, the 821F and 921F wheel loaders incorporate the use of powerful and quick hydraulics in addition to a host of features that further enhance machine efficiency and productivity. Among them are:
- Four programmable power modes that allow users to match the machine output to available engine power.
- Heavy-duty axles with auto-locking front and open rear differentials for optimal traction in virtually all conditions, including gravel. The axle design also helps reduce tire wear, especially on hard surfaces. Solid tires are also available as an option.
- An optional five-speed transmission with lock-up torque converter for even faster road travel speed, acceleration and shorter cycle times. The transmission includes the CASE Power Inch feature that lets operators approach targets quickly and precisely regardless of engine speed. It also ensures there is no roll back, making it easier and quicker to dump into a truck. The standard four-speed transmission with manual kick-down capability provides maximum traction and increased bucket penetration.
Each model is covered under CASE ProCare – a suite of product assurances that include a three-year Advanced CASE SiteWatch telematics subscription, a three-year/3,000-hour full-machine limited factory warranty, and a three-year/3,000-hour planned maintenance contract. ProCare allows business owners to invest in new equipment while helping to make owning and operating costs predictable for the first three years of ownership.