Instruksjonsbok Volvo A25D - A30D

Dropbox

Purpose-Built Dropbox The dropbox in A25D and A30D is specifically designed for articulated haulers. A Volvo dropbox provides higher ground clearance at the hitch since the output shaft for the bogie axle drive is placed higher than the output shaft to the front axle.

In-line dropbox The dropbox has an in-line design with fewer gear wheels reducing power losses and fuel consumption

Longitudinal differential The longitudinal differential, located in the dropbox, per- mits the wheels on the front axle and bogie axles to rotate at different speeds. This means reduced power losses, reduced tire wear, smaller turning radius and bet- ter fuel economy. The longitudinal differential is controlled by the operator, and it can be engaged or disengaged on the move so that the tractive force is distributed evenly to all drive axles. Activation also engages the third axle drive on the rear bogie axle (6x6). This gives significant improve- ment of the machine’s traction and off-road performance. Advantages • Design that permits high ground clearance at hitch. • In-line dropbox reduces power losses and fuel con- sumption. • Longitudinal differential reduces power losses, tire wear and fuel consumption. • Longitudinal differential lock improves traction and off-road performance. • Longitudinal differential lock can be engaged or disengaged on the move.

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