The Bobcat A770 all-wheel steer loader is manufactured with a Tier 4-compliant, Bobcat 3.4L diesel engine. These engines do not require a diesel particulate filter (DPF), which would make regeneration and routine filter cleanings necessary.
New Bobcat 700- and 800-frame-size compact loaders combine the following technologies to meet Tier 4 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 to 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.
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% capacity. Audible alerts will also remind operators when DEF is getting low.
New air inlets designed in the loader tailgate and above the cooling system, and 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.