Long acting excavator steering failure maintenance tips secret big secret

Construction machinery home Xiaobian share with you a Xialong excavator steering failure repair tips.

(1) if the steering wheel is turned, the steering wheel can not automatically return to neutral position, and the pressure drop in the middle position increases. It may be that the spring of the steering gear spring is insufficient or broken. At this point, the steering gear should be broken down to check the position spring. If the spring piece is intact, it is caused by insufficient elasticity, such as spring broken, should replace the spring sheet.

(2) if the steering wheel is rotated, the pressure oscillation is obviously increased and even can not be turned; this may be caused by the fracture or deformation of the transmission pin of the steering gear, or the breaking or deformation of the transmission rod opening. At this point, disassemble the steering gear to see the drive pin and drive rod. If the drive pin is not broken, see if it is deformed. If it changes, it should be replaced or corrected. View transmission lever opening, if broken, should be replaced, if deformation should be corrected or replaced.

(3) if the steering wheel rotates or swings to the left and right, it may be the wrong position between the rotor and the drive rod. At this time, the steering gear is broken down, and the toothed teeth on the drive rod can be meshed with the teeth of the rotor spline hole with the punching point.

(4) if the machine is running or rotating the steering wheel, the hydraulic cylinder does not move (it may slow), it may be the safety valve of the steel ball stuck by dirt or damaged by the sealing ring. The steering gear should be broken, the relief valve should be cleaned, and the sealing ring replaced.

"Excavator steering failure" can actually be counted as one excavator troubleshooting faults, because it is not common, so not too much maintenance experience, need to repair the master using a rich experience in performance, easy first principle one by one investigation.