Rotary cultivator off the common reasons 1? Rotary cultivator uses a jaw clutch, due to the use of time is too long, the tooth engages the tooth surface serious wear, so that the meshing tooth tooth tip was rounded and lost the mesh After the self-locking ability, in the course of the operation is easy to slip and off the gear? 2? Engaging sleeve positioning spring is too small or broken, the meshing teeth force or in case of vibration unit, the engagement sleeve axial sliding and unblocked. 3 The axial sleeve of the engaging sleeve has large axial wear, and the ball moves axially during the working process to disengage the meshing teeth. ? 4? Dial and the joystick ball head excessive wear, due to the axial clearance during the shift is too large, even if the up gear, meshing teeth meshing width is small, when the load changes or when the unit jumps easily Unblock. Removal method of the disengagement fault 1? If the clutch meshing tooth is bald, it should be promptly repaired or replaced. The repair can be used carbon welding electrode welding meshing teeth, and then using standard tooth indentation after welding repair, and heat treatment according to the provisions. 2? Use standard springs to replace springs that have too little spring force or breakage to ensure that the engaging sleeves have sufficient positioning stability and reliability. If the grooves of the positioning sleeves of the engaging sleeves are excessively worn, they shall be repaired or replaced with new ones. 4) The retaining groove and the joystick ball head can be repaired when worn excessively, and then heat-treated after being manually trimmed. Replacement of new parts that cannot be repaired.