20 minutes. Drivetrain The automatic gearbox is connected to the drivetrain with a system of spiral bevel gears that allows quick coupling. The torque is sent from the gearbox through a two-speed transfer gearbox, four differentials with reduction gearboxes, and the drive shafts to the wheels. In the on-road drive mode, 30 % of the torque is sent to the first pair of wheels, 21 % to the second pair of wheels, and 49 % to the fourth pair of wheels; the third pair of wheels does not receive any torque (8×6). The wheel slip is measured by a system called the "Automatic Drivetrain Management" (ADM). Depending upon the position of the gear selector, the ADM automatically splits the fourth pair of wheels' torque evenly between the fourth and third pair of wheels (i. e. it engages or disengages all-wheel drive), it also engages or disengages the transfer case's reduction gear, and it engages the pair of wheels' differentials in an escalating fashion. The differentials are jaw clutches with a 100 % locking rate; thus, they do not allow wheel slip. A few seconds after differential lock engagement, the ADM already turns off the differential lock. A coil spring then disengages the differential lock, which is mechanically prevented if there is still differential torque (this means that, the differential lock remains engaged even though it is "turned off", if one wheel would otherwise spin rather freely; only if both wheels have "grip", the differential lock mechanically disengages). This allows the Pandur II to keep its differentials unlocked most of the time, which drastically reduces the reactive torque within the drivetrain – with all differential locks engaged, one wheel can receive all the torque. The Pandur II's drivetrain can transmit up to 20 kN·m of torque to a single wheel; irreversible deformation occurs at torques of around 30 kN·m. Water jet propulsion and winch The Pandur II has an 80 kN hydraulic winch. The APC had a fording depth of up to 1500 mm – through deeper waters, the Pandur II can swim. For this purpose, the Pandur II has a trim vane, an additional water-water-cooler (without a radiator), a snorkel, and a bilge pump. The two water jet propulsion units are installed in the Pandur II's back; they are mechanically driven through the drivetrain. When the water jet propulsion system is active, the wheels are not driven – this is