Our focus was on the new rear air suspension. By itself, it is certainly not news, in this case it was specially adapted for the off-road cargo segment. We can see that all the vulnerable parts of the suspension, such as shock absorbers, stabilizers and air bellows are retracted inward and are located above the axle beam.
Many drivers are skeptical about air suspension, but Volvo proves otherwise. The stabilizers are connected to the frame in the most rigid place, which gives the structure special rigidity and compactness. The lack of elements behind the bogie allowed for a shorter rear overhang and moved the tipper axle even closer to the rear bogie. The process of tipping the body is facilitated, the dump truck is more stable and stable when unloading. Four airbags per axle and powerful stabilizers, they can be seen in the picture, do not give a shadow of doubt in the calculations of Volvo Trucks engineers. Air suspension is available for 4 × 2, 6 × 4 and 8 × 4 trucks.
It is important - with such an arrangement of the axes, the leaders will always be more loaded. With deteriorating road conditions, a tridem dump truck will always be in a better position. Climbing a steep climb, I noticed that the 2 + 2 walking in front of me was prone to frequent slipping on dry loose soil, at the same time, my three-axle cart did not give even a hint of slipping. The thing is that the air suspension has the ability to redistribute the load function along the axles and in this case it worked automatically. My rear axle just unloaded in favor of the driving axles, so that's it! Again, the economy on fuel and tires has not been canceled, because in the unloaded state the rear axle does not work.
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