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Contractors World 2012 Volume 3 Issue 2
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New Generation Wheel Loader from Doosan

With the clutch cut-off system engaged, the driver is able to disconnect the transmission from the engine by operating the brake pedal, to have 100% engine performance for the hydraulic system. As a result, movements are faster, breakout force is maximized and fuel consumption is reduced.

All are equipped with a torque-converter-cut-off (TCCO) system which, when activated, is switched on automatically. This provides a direct mechanical connection between the engine and transmission without loss of power and torque by the torque converter.

New ZF 5-gear transmission

The new ZF 5-gear transmission improves the transfer of power from the engine to the wheels and contributes significantly to the overall reduction in fuel consumption. The change from four to five gears provides better response and acceleration, especially on slopes. Engine speed variation is also less due to smaller gear steps, and lower engine speed throughout the whole drive range reduces fuel consumption. Another benefit of this is a lowering of noise levels while driving performance and productivity are increased.

As an option, customers can choose ZF axles with a hydraulic differential lock. This function is engaged via the operator pedal or in automatic mode, depending on the torque resistance in 1st and 2nd gear. The advantage of the hydraulic lock system is that it has less rolling resistance compared to the limited slip system.

The radiator fan is hydraulically driven and controlled by an ECU. Changing the fan direction for cleaning the radiator can be done manually from the cab, without having to switch off the engine. Fan reverse intervals (30 minutes to 2 hours) can be set via the menu.

Operator comfort a priorityOperator comfort a priority

Key to productivity in any large wheel loader is the operator. Look after the operator and the work gets done. Doosan recognise this importance. A new cab design features improvements both outside – better visibility due to a wider front glass section and an extended wiper blade area; better protection due to larger mud guards, improved hand rail and step designs and a new roof cover - as well as inside – such as the new instrument panel with integrated vehicle control unit (VCU).

The control panel has been redesigned to allow the operator to choose the information they want on the display. The control panel has been redesigned to allow the operator to choose the information they want on the display. Using the Main Menu, the operator has access to several functions and machine information. Pressure, temperature and engine speed can be monitored in real time. Detailed operating information is available via the Special Menu.

All new Doosan wheel loaders will have Grammer seats, which are vertically as well as horizontally air suspended. This design, which cushions movements to the front and the rear, is recommended by orthopaedic consultants and is well accepted by operators.

Serviceability

All Doosan new generation large wheel loaders have as standard the SKF Vogel Auto Lubrication system to increase operational hours and extend the lifetime of the machine.

The lift arm has been strengthened with 10% thicker metal in the arm and the tilt lever.

A larger opening angle for the side door improves serviceability. A 90° swing-out fan with swing-out side doors provides easy access to the rear for cleaning the new one block radiator.

Click here for more information >>> Doosan wheel loader

 

 

 

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Page updated: February 2012

 

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