45
Maintenance
BRAKE SYSTEM
When the accelerator pedal is pressed a switch is activated which sends a signal to energise
the solenoid on the brake release valve. This links the pilot pressure from the charge pump of
the hydrostatic drive pump to release the brakes.
When the pedal is released the switch sends a signal to de-energise the solenoid valve. This
removes the pilot pressure and the brake springs in the wheel motors push out the brake
pads. This is time dependant and for a smoother operation a restrictor is used in the hydraulic
tank return line, ensuring softer engagement of the brakes.
The main brake system on this dumper is provided by hydrostatic
retardation by releasing the accelerator pedal. The parking brake is
automatically applied when accelerator pedal is released, this will act as a
secondary emergency brake.
THE BRAKES ARE ALWAYS ON UNLESS THE ACCELERATOR
PEDAL IS PRESSED DOWN WHEN THE DUMPER IS STARTED.
HIGH PRESSURE
LINES
To Next Page
Loading...
