Car engine repair is best left to professionals. This will save you a lot of trouble, at the same time, it will save you money and time. However, there are times when repairs should be done on your own. In this case, the main thing is not to violate the order of work.
Necessary
bolt set, bushings, grease, torque wrench
Instructions
Step 1
Before replacing the connecting rods, purchase the necessary set of bolts with which the connecting rod caps are attached. This must be done without fail, as they will stretch out after the first puff and become unusable.
Step 2
Clean the cylinder walls before installing the connecting rods to avoid damage to the top layer of the coating. The pistons should also be cleaned of carbon deposits. And one more point to which you should pay attention: usually the connecting rods require replacement in exceptional cases only when the engine is seized. If this is not your case, then it is better to leave everything in its place.
Step 3
Remove the engine head as well as the oil pan, oil pickup tube, and reflector. This is necessary to gain direct access to the crankshaft and connecting rod caps.
Step 4
Before removing the connecting rods, apply marks on the caps of each connecting rod, so that later each part will be in its own place. Then remove the cover from the connecting rod, remove the old bushings and, if necessary, put in new ones, again not forgetting that the surface of the parts is flawlessly clean. When installing new bushings on the connecting rods, be sure to check that there is no gap between the connecting rod and the bushing, that is, that the bushing sits tightly in the connecting rod. It is highly discouraged to use a hammer or other tools when installing the bearing shell into the connecting rod, so as not to scratch the surface of the bearing shells and connecting rods. If scratches occur on the connecting rods or liners, it is better to replace the part with a new one immediately, since scratches can lead to premature wear, and subsequently to engine seizure.
Step 5
Install first the pistons of the 1st and 4th cylinders in BDC (bottom dead center) and replace the connecting rods. Then turn the crankshaft so that the 2nd and 3rd pistons are at the bottom dead center and replace the connecting rods in the second and third cylinders.
Step 6
Install the connecting rod on the engine crankshaft and fit the connecting rod cap, then tighten the connecting rod bolts with a torque wrench. If tightened with a regular wrench, the bolts can be ripped off. The connecting rods must be replaced in the same sequence. First, put the connecting rod in the first cylinder, then put the connecting rod together with the piston in the fourth cylinder and the second and third, respectively - all in the same way.
Step 7
Reinstall the deflector, the oil pickup tube and the oil pan after installing the connecting rods with pistons in the cylinder block. Then install the engine head.
