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BA 34603_04 US – Edition 2.1 * 34603_04b110.fm
Introduction
Hydrostatic drive
The diesel engine permanently drives a hydraulic pump (variable displacement pump),
whose oil flow is sent to a hydraulic motor flanged on the gearbox. The force of the hydrau-
lic motor is transmitted to the rear axle via the transfer gearbox. At the same time, the front
axle is driven by the cardan shaft, ensuring permanent 4 wheel drive.
Work hydraulics and 4 wheel steering
The diesel engine also drives the joint gear pump for work hydraulics and hydrostatic 4
wheel steering. The oil flow of this pump depends on the diesel engine speed only.
When the machine is in operation, the entire diesel engine output can be transmitted to the
gear pump for work hydraulics and steering. This is made possible by an inching valve
which responds as soon as the service brake is used, reducing or cutting off power input of
the drive. Therefore, engine output is fully available for the loader unit by pressing the
accelerator pedal and the brake pedal at the same time.
Cooling system
A combined oil/water radiator (for the diesel engine and the hydraulic oil) is located at the
rear of the machine.
The indicators on the instrument panel of the machine ensure constant monitoring of the
coolant temperature and level, and of the hydraulic oil temperature.
