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Bobcat’s 700-, 800-Frame-Size Loaders Boast Tier IV Engine Solution Without Need for DPF

Bobcat diesel engines deliver high-performing torque across a wide span of engine rpm, and lower engine noise for enhanced operator comfort.

Wed November 11, 2015 - National Edition
Construction Equipment Guide

Bobcat Company has increased the number of its Tier IV-compliant skid-steer and compact track loaders with the transition to a 3.4-L diesel engine in its 700- and 800-frame-size loaders.

Bobcat S750, S770 and S850 skid steer loaders; T750, T770 and T870 compact track loaders, and A770 all-wheel steer loader are manufactured with a Tier IV-compliant, Bobcat 3.4-L diesel engine. Bobcat diesel engines deliver high-performing torque across a wide span of engine rpm, and lower engine noise for enhanced operator comfort. Bobcat 3.4-L diesel engines do not require a diesel particulate filter (DPF), which would make a regeneration process and routine filter cleanings necessary.

Tier IV Solution

New Bobcat 700- and 800-frame-size compact loaders combine the following technologies to meet Tier IV emission standards:

• High-pressure common-rail (HPCR) fuel injection system

• Cooled exhaust gas circulation

• Diesel oxidation catalyst (DOC)

• Selective catalytic reduction (SCR) system

Selective catalyst reduction is a common aftertreatment system that is required to meet the EPA emissions standards for 75-plus-hp machines. The system requires diesel exhaust fluid, also known as DEF. A new DEF fill tank cap is located on the left side of Bobcat all-wheel steer, skid-steer and compact track loaders. The fill tank cap is blue and clearly labeled to avoid mistaking it for the diesel fuel tank cap. All new 700- and 800-frame size loaders rated at 75-hp and above have an updated display panel inside the cab. The updates include a DEF level indicator to inform operators how much DEF is in the loader’s tank. Additionally, an SCR error icon will illuminate when the DEF tank is at 25 percent capacity. Audible alerts also will remind operators when DEF is getting low.

Operators may notice new air inlets designed in the Bobcat loader tailgate and above the cooling system. Electric air inlet fans in the loader tailgate help to keep the engine compartment cool. Additional air outlets are located above the tailgate for warm air to exit the engine compartment.

Horsepower ratings for Bobcat 700- and 800-frame-size loaders remain the same, with the exception of the T870, which increases to 100 hp — the first Bobcat compact track loader with 100 hp.

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