Description
76
- 131
Operating manual, Dumper – 3012 PLUS
Status 28 April 2015
Bergmann Maschinenbau GmbH & Co. KG
8.1.2. Diesel engine and accessories
The diesel engine with the flange-mounted transfer box is arranged longitudinally on elastic bearings
in the rear section of the truck. The exhaust pipe is located in the engine compartment and the air filter is
attached to the vehicle wing. For detailed information and maintenance instructions for the diesel engine
and its accessories, see the enclosed operating manual provided by the engine manufacturer.
8.1.3. Hydrostatic travel drive
The vehicle is driven by a hydro-mechanical torque converter with downstream powershift transmission
with integrated transfer box. The converter serves as wear-free starting gearbox, and its speed and
torque can be continuously adjusted to the actual requirements. The drive mechanism is connected
directly to the engine. The machine comes with manual and automatic gear shifting. The power is
transferred to the axles by means of joint shafts. Front axle drive can be switched on when the machine is
standing still. Key features are:
At idle rpm of the diesel engine, the flow rate of the pump is zero. The dumper is at a standstill. The flow
rate of the pump (and thus the travelling speed) increases as the diesel engine accelerates.
When the travelling resistance increases, the pump automatically reduces the flow rate. The dumper thus
travels slower as the slope becomes steeper. This prevents overloading of the diesel engine.
By shifting the hydraulic motor power, the following 6 travel modes can be chosen: