Overhaul and disassembly method for contra-rotating propeller

The invention relates to an overhaul and disassembly method for a contra-rotating propeller. According to the overhaul and disassembly method for the contra-rotating propeller, the method comprises the following steps: a, removing the coupling shield and the accessories connected on the shaft system; B, draining the lubricating oil of the gear box and the lubricating oil of the oil distributor; C,a wagon with half of the open-sided hollow shaft facing upward, removing the upper half of the open-sided hollow shaft and removing the bottom-most flange connecting bolt of at least one lower half of the shaft; D, fixedly connecting the inner shaft and the outer shaft with a first connector, and fixedly connecting the open-sided hollow shaft of the lower half circle of the dismantled bolt with the cabin with a second connector; E. Supporting the coupling on the cabin using a support plate; F, sequentially removing the oil distributor, the intermediate bearing and the oil distribution shaft;G, removing the coupling;