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Equipped for the job

Extreme-service guarding helps protect the D7E Waste Handler from a hostile environment. Heavy-duty bottom guards protect the crankcase and drive train components, while also preventing trash build-up. Easy access to the power train is achieved via the hinged design.

A heavy-duty radiator guard shields the D7E's three-section cooling system. A new dual-hinge design allows the guard to fold away completely for easy cleaning access—without removing the lift cylinder. The new system (engine, propulsion-module and charge-air cooling) is designed as a single-plane, eliminating a stacked arrangement of individual coolers that could trap debris. Wider radiator-fin spacing (six per inch) lets debris smaller pass through, and an automatically reversing hydraulic fan purges debris from the coolers and perforated engine enclosures.

Specially designed guards prevent damage to pivot-shaft seals. In addition, chassis guards protect the engine-compartment side panels from damage by deflecting debris.
 
A newly designed final-drive-seal guard prevents potentially damaging flexible trash, such as wire and nylon strapping, from wrapping around the duo-cone seal area. The new guard includes a rugged cast outer shell to resist abrasion, plus multiple labyrinth seals and an inner Kevlar seal.

Guards for the front-idler seals are similar, incorporating a labyrinth design that keeps debris out. Optional front and rear striker bars prevent trash from riding up the tracks and damaging the fenders, fuel tank or hydraulic tank—all of which are also equipped with special guards.

Laminated thermal shields cover the exhaust manifold, hot side of the turbocharger and the exhaust stack within the engine compartment. These shields reduce surface temperatures well below the flash point of most combustibles in waste-handling operations. A two-stage, intake-air pre-cleaner has a spinning impeller that ejects most debris, and remaining contaminants are removed by a secondary exhaust scavenger before intake air reaches the main filter, providing exceptional air-filter life.

Lights are positioned on the D7E Waste Handler for the most efficient lighting pattern, and the ROPS-mounted air-conditioner condenser is positioned above swirling dust and debris. Added sealing is used for engine enclosures, operator-station platform, battery box and rear-case opening to keep out even fine debris.

Recommended options for the D7E Waste Handler include front and rear striker bars and center-hole track shoes, which allow the sprocket to punch out debris that might otherwise collect in the track chains and accelerate wear. An enhanced cab, with higher pressurization and a powered pre-cleaner and high-efficiency filter, keeps air in the operator's station cleaner. Available rear-mounted work tools include a multi-shank ripper, winch or drawbar.

Blade and undercarriage choices
Blade types for the D7E Waste Handler equipped with a standard-gauge undercarriage include the universal, semi-universal and straight—all available with a trash rack for increased capacity and added machine protection. Machines with the optional low-ground-pressure (LGP) undercarriage use a larger-capacity straight blade with a trash rack. All waste-handler blades are faced with a 3/8-inch-thick (10-mm) steel wear plate for added durability.

The D7E Waste Handler's standard low-drive undercarriage is designed for reliable, durable performance in severe applications. The optional SystemOne™ undercarriage features sealed and lubricated cartridges, eliminating pin-and-bushing turns, and sprockets designed to last the life of the track chain. Both undercarriage types currently are available in either standard or LGP gauge; all appropriate blade options also are currently available.

For more information about the D7E Waste Handler, customers should contact their local Cat dealer or visit www.cat.com.

D7E Waste Handler Basic Specifications


Net power:

235 hp (175 kW)

Operating weight range:   

63,500--68,100 lb
(28 800--30 900 kg)

Blade Capacity w/ trash rack:
Universal (U)
Semi-U (SU)
     Straight (S)           
Straight (LGP)

 

22.0 yd³ (16.8 m³)
18.4 yd³ (14.0 m³)
14.2 yd³ (10.9 m³)
16.1 yd³ (12.3 m³)

                                                                    
About Caterpillar
For more than 80 years, Caterpillar Inc. has been building the world’s infrastructure and, in partnership with its worldwide dealer network, is driving positive and sustainable change on every continent. With 2009 sales and revenues of $32.396 billion, Caterpillar is a technology leader and the world’s leading manufacturer of construction and mining equipment, diesel and natural gas engines and industrial gas turbines. More information is available at www.cat.com.

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Note to Editors: Caterpillar rolls-out products and services in each of its territories at different time intervals. Although every effort is made to ensure that product information is released only after Caterpillar has received confirmation from our dealer network, our plants, and our marketing subsidiaries that products and services are available in the relevant region, editors are kindly requested to verify with their local dealer for product availability and specifications.


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