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Home >> Volvo >> 2010 >> V70 Base, 3.2 96 >> Repair and Diagnosis >> Engine Performance >> System >> Differential Electronic Module (DEM), Driver Information Module (Dim), Engine And Engine Control Module (ECM) - Design And Function >> Differential Electronic Module (DEM) (2009-2010) >> System Overview >> Power Transmission
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Power Transmission

Fig 1: Power Transmission Overview
GLL168852Courtesy of VOLVO CARS CORPORATION
  1. Bevel gear:  Transmits torque from transmission to propeller shaft. Always rotates at the same rate as the front wheel pair.
  2. Propeller shaft:  Transmits torque from front axle (bevel gear) to rear axle. Always rotates at the same rate as the front wheel pair.
  3. Active On demand Coupling (AOC):  At four-wheel drive, the AOC transmits torque from the propeller shaft to the rear wheel pair. Rotates at four-wheel drive.
  4. Differential gear:  Transmits the force to the rear wheel pairs. Rotates at the same rate as the front wheels at four-wheel drive.
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