Hi guys. I am still new maintenance personnel in our company specially the heavy equipment. Our combilift c5000 has a problem regarding the side travel mode. Initially all wheels are on 90 deg, if we put the joystick on right direction, only the rear wheel go 0 deg, we manually steeer using the steering wheel to move the front wheels 90 to 0 deg or more. During side travel mode, which valves should be open for proper steeering of thw wheels.