248 Working hydraulics circuit I Float setting, yellow hydraulic connec- tions 7 and 8 Depending on the weight of the snow plough, Mercedes-Benz recommends a load relief function value for the snow plough between 5% and 20%. The load relief function value set will be shown in the on-board computer in the hydraulics ( Y page 235) menu window and in the hydraulics ( Y page 237) input window as a percentage: X To activate the float setting: press and hold white button G and red button A . X Move the control lever in direction C . X To deactivate the float setting: press white button G and move control lever in direction C or E .
Hydraulic system Snow plough load relief Important safety notes G WARNING If you switch the snow plough load relief or the hydraulic system on or off while the snow plough attachment is raised, it may drop sud- denly. You or others may become trapped. You could then lose control of the vehicle if it is moving. There is a risk of an accident and injury. Snow plough load relief may only be switched on or off when the snow plough attachment is lowered. Make sure that no other person:
R switches on the hydraulic system while the snow plough attachment is raised Switching snow plough load relief on/off R is located in the danger zone if the transport lock is detached With the snow plough load relief, you have the option of partially transferring the weight of the attached equipment to the vehicle. Mercedes-Benz recommends that you only use the snow plough load relief for the pur- pose for which it was designed. The weight shift:
Switching snow plough load relief to standby mode R increases the traction on the front axle R improves the driving characteristics through better steering and cornering char- acteristics R reduces the wear on the bottom edges of snow ploughs R reduces the noise level in clearing mode Load relief func- tion value in % Meaning 100% Full pressure in the hydraulic cylinder. The snow plough is raised. 50% Half pressure in the hydraulic cylinder. The snow plough is applying half its weight to the road. 1% Low pressure in the hydraulic cylinder. The snow plough is applying full weight to the road.