Do Connecting Rod Bearings Need to Be Replaced When Changing the Connecting Rod?
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If replacing the crankshaft connecting rod, both the main bearings and connecting rod bearings must be replaced. Connecting Rod: The connecting rod consists of components such as the connecting rod body, connecting rod cap, connecting rod bolts, and connecting rod bearings. The connecting rod body and cap can be divided into the small end, shank, and big end. The small end is used to install the piston pin to connect to the piston. The shank is typically designed with an "I" or "H" cross-section to reduce mass while meeting strength and stiffness requirements. The big end connects to the crankshaft's connecting rod journal. It is generally made as a split type, with the separated half called the connecting rod cap, both connected by bolts. The connecting rod bearings are installed in the big end housing and paired with the crankshaft's connecting rod journal, forming one of the most critical fits in the engine. Function: Its function is to transmit the force from the piston to the crankshaft and convert the piston's reciprocating motion into the crankshaft's rotational motion.