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Case Improves Creature Comforts in E Series Wheel Loaders

Wed April 11, 2007 - National Edition
Construction Equipment Guide

The new Case E series wheel loaders — the 721E, 721E/XT and 821E — feature a new cab for enhanced operator comfort, Tier III-certified Case power and increased maintainability and serviceability.

“The operator environment on these new wheel loaders has been designed with ergonomics and operator comfort in mind and includes plenty of user-friendly controls, creature comforts and productivity features,” said Dave Wolf, brand marketing manager, Case Construction Equipment. “At Case, we know from experience that a comfortable operator is more alert, responsive and productive.”

Specifically, Case designed the new cab to allow for maximum adjustments to increase the operator’s comfort and productivity.

“We can match the cab environment to the operator’s size and preferences, with a tilt steering column, infinitely adjustable seat, arm rests and control placement,” Wolf said. “Operators will also appreciate the increased roominess of the cab.”

Quiet, Comfortable Cab

The cab also features numerous air diffusers to provide maximum air circulation for faster, more thorough heating and cooling. The ISO-mounted cab is among the quietest in the industry, according to the manufacturer.

Floor-to-ceiling glass in the front, along with a sloping rear engine compartment, offers a panoramic view for maximum visibility both forward and to the rear.

“The operator has a clear, direct view to the front tires and to the bucket edge,” Wolf said. “The increased visibility to the attachment and work site makes for more productive and efficient operation.”

The standard single-lever loader control and forward-neutral-reverse joystick with transmission downshift button put all the controls at the operator’s fingertips. A digital display records real-time data, shows diagnostic information and allows programming of operational modes.

An in-cab cooler box keeps food and drink cool during a long, hard day on the job, and a lockable storage compartment keeps the operator’s personal items secure. The cab door and right-hand windows swing back 180 degrees for maximum cross ventilation, or the right-hand cab window can be opened slightly to temper the cab.

Case Tier III Adjustable Power

The new Case E series wheel loaders are powered by fully electronic 6.7-L Tier III-certified Case engines that allow operators to match power and fuel economy to their application. They can choose between three power curves — max, standard and economy power — and four work modes — max, standard, economy and auto.

For high-production activities such as aggregates, operations that require high breakout force and fast cycling, the operator may choose to use maximum power at all times. For operations such as working in a pipe yard or handling palletized material, economy mode will complete the task with the greatest fuel efficiency. In auto mode, the electronically controlled engine adjusts between power curves to move the maximum amount of material per pound of fuel, according to the manufacturer.

Maintenance, Serviceability

Easy servicing increases machine usage and lowers ownership costs.

“The easier it is to perform daily maintenance and service, the more likely it’s going to get done,” Wolf said. “That’s why we designed the Case E series wheel loaders with best-in-class maintainability, including groundline service checks.”

“The only tool required for service checks is a rag to wipe oil off the dipstick,” Wolf said.

The electrically actuated rear hood provides easy access to the engine and all daily maintenance checkpoints. Three remote drains for coolant and engine and hydraulic oil provide convenient access for fast, environmentally friendly fluid changes.

Mid-Mount Cooling Module

All three new E series models feature a cube-shaped mid-mount cooling module that supplies clean, ambient air to all coolers, increasing cooling efficiency, reducing fluid breakdown and extending component life. With no stacked coolers, the mid-mount module prevents debris from plugging between coolers.

A hydraulically controlled fan within the cooling module can be reversed to purge debris from the module within seconds, so the machine can stay on the job site rather than being moved to a cleaning station.

“For working conditions with a lot of high airborne debris, the Case E series wheel loaders are the machines of choice,” Wolf said.

The 6.7-L Case engine on the E series models is located behind the rear axle to contour to the rear hood for greater rear visibility. The engine incorporates the new common-rail fuel injection system, which allows air and fuel to mix in nearly equal proportions for a cleaner burn.

More Material Retention

Case has redesigned the bucket for increased productivity and longer wear, extending the bolt-on cutting edge to accommodate larger loads and creating a very fine edge for easier penetration into the pile. The skid plates on the E series machines are bolted on for easier repair and replacement.

The bottom floor plate on the bucket is set at a 5-degree angle. The hinge pins are raised out of the dirt and debris for longer life and improved mixing and filling of material. Wolf noted that the buckets on the new E series machines are compatible with Case D series wheel loaders.

Ride Control

Ride Control, an option on the E series wheel loaders, provides material retention while reducing both shock on the machine and operator fatigue. Ride control can be set for full-time mode or in auto mode when roading above three mph.

“Limited-slip axles on the front and rear transfer power automatically from the wheel that’s slipping to the wheel that is gripping,” Wolf said. “These machines have all the traction needed to continue to work efficiently in changing job site conditions.”

Outboard planetary and wet-disc brakes provide ease of serviceability and machine stability because the weight is outside the frame rather than inside.

Ideally suited for a variety of landscaping, industrial material handling and residential construction applications, the 721E, 721E/XT and 821E are powered by six-cylinder, 6.7-L Case engines that produce 183 net hp (137 kW) and 213 net hp (159 kW) respectively.

Operating weights for the three models are 30,644 lbs. (13,900 kg), 31,574 lbs. (14,322 kg) and 37,844 lbs. (17,166 kg), while bucket capacities are 3.01 cu. yds. (2.3 cu m), 3 cu. yds. (2.3 cu m) and 3.78 cu. yds. (2.89 cu m).

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