... bidirectional hydraulic lock, Rear axle steering lock and rear wheel return detector, emergency steering power device, gradienter, hydraulic system ... from retractation. 8 Rear axle steering lock and rear wheel return detectorDuring the driving process. only front axle steering ... 40 km/hMax.gradeability (tanQ): 55%Min.turning radius: Four wheel steering 5.1m, Minimum turning radius of jib nose 9 ...