The steps for disassembly and assembly of dental low-speed handpiece contra-angle machine are as follows:
Disassembly process: First, remove the large gear. If the large gear is found to be cracked, it needs to be repaired or replaced. Next, disassemble the transmission mechanism and bearings, and replace new bearings.
Assembly process: After replacing the bearings, reassemble the handpiece. Pay attention to the importance of oiling to ensure smooth operation of the machine.