(1) every time running 12000km for secondary care, shall be assembled engine oil pan, check the use of the engine bearing shell, if discover individual bearing shell clearance is too large, should be replaced, replace at the same time should also replace the connecting rod bolt.  In normal operation, if the engine is found to be running unsteadily and has abnormal noise, it should also stop and check in time.
(2) During each repair, the newly replaced connecting rod bolts shall be inspected. Attention shall be paid to whether there are cracks or dents in the head, guide parts and thread parts of high-strength ANSI B18.2.1 bolts, whether the tooth shape and pitch of the threads are abnormal, and whether there are abnormal situations shall be resolutely avoided.
(3) When assembling the connecting rod cap, use a torque wrench to tighten it according to the specified specifications to prevent excessive and small torque.
(4) Select the connecting rod high-strength Track Bolt produced by the matching factory.