The notch direction of the connecting rod bush, the front and back pictures of the installation of the connecting rod bush

The direction of the notch of the connecting rod bush is actually toward the direction of the oil pump, which is mainly used to lubricate the engine connecting rod. As for the front and back of the connecting rod bearing installation, if you want to know the answer, just continue to look down.

Front and back picture of connecting rod bearing installation

The connecting rod bearing bush is divided into two parts, the upper bushing and the lower bushing, which are installed at the connecting part of the connecting rod and the crankshaft to play the role of wear resistance, support and transmission. Then, the inner cylindrical surface of the upper bush of the connecting rod is provided with a reasonable arc-length oil groove along the circumferential direction, and the connecting rod bush wall of the oil groove part is provided with an oil hole, which is the notch mentioned in this article. Secondly, we can also assemble by the position of the positioning lip, the one without the positioning lip can be used on the connecting rod with the positioning lip, but not vice versa.

So, when we are assembling the connecting rod bushes, don't reverse the direction, otherwise it will cause varying degrees of impact. Secondly, the screw must reach the corresponding torque. But don't overtighten it, otherwise it will cause the bolt to be overstressed, which will not only cause slippage of the internal thread, but also the bolt will have a certain chance of deformation.