The Volvo A35E, Volvo 35E FS, Volvo A40E, and Volvo A40E FS are also equipped with a new fully-automatic ninespeed adaptive transmission. Shafts, planetary gears and bearings are all engineered to handle the high torque produced by larger engines. An optimized gear shifting pattern has overlapping ratios to provide constant power transfer. These new models also have new frames, axles, and a new single speed drop box with longitudinal differential and 100% lockup to reduce power losses and improve traction and fuel efficiency. They are also fitted with more powerful exhaust brakes and retarders, and the cooling systems have been improved to eliminate the need for additional supplemental cooling in hot climates.

The FS system has automatic leveling and stability control on all wheels and replaces the traditional rubber suspension with a hydraulic cylinder at each wheel. The system constantly monitors the load and ground conditions, adapting the suspension to fit prevailing conditions and providing increased ground contact.

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