1. When operating 12000km for secondary maintenance, the engine oil sump should be disassembled to check the use of the engine bearing bush. If the individual bushing clearance is too large, it should be replaced, and the connecting rod bolt should also be replaced at the same time. If you find that the engine is running unevenly and there is abnormal noise during normal operation, you should stop it for inspection.
2. During the maintenance, the newly replaced connecting rod bolts should be inspected. It should be noted whether the head, the guiding part and the thread parts of the bolt have cracks or dents. Whether the thread shape and pitch of the thread are abnormal, there should be no need to use abnormal conditions. .
3. When assembling the connecting rod cover, apply a torque wrench and tighten according to the specified standard to prevent the torque from being too large or too small.
4. Select the connecting rod bolts produced by the supporting factory.
After the bolted stainless steel nuts (hex nuts) are installed, they may be disassembled according to the situation during use. At this time, it is not blindly dismantled. If the disassembly is not good, it may cause damage to the stainless steel bolts and nuts. Certain skills.