Subaru 12108AA290 Bearing Set Connecting Rod Std

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Before removing the connecting rods from the crankshaft, turn the engine with the feeler gauge, and observe the end play (side clearance, connecting rod to crankshaft throw) then do the same for the other rods also. The end play is equal to the thickness of the feeler gauge(s), it is recommended to consult an automotive machine shop for end play service limit which generally ranges from to .050 to .015" (0.127 to 0.369 mm). Past this range, new connecting rods will be required in the play of the drill string. In some instances, new rods or a new crankshaft might be inserted, and the resultant end clearance is located below the postoperatively minimum standard; hence, some machining of the rods or seeking advice with an automotive machine shop. If the rods and caps are not numbered, then try to number them in order that they could be refitted between the related cylinder and crankshaft journal, the usage of permanent ink or paint layer. With the crankshaft facing up, place one dot at the connecting rod and cap at the front of the crankshaft, mark the second one with two dots, and so on, both the rods and caps should be marked since they will needs to be separated later. After loosening the cap nuts/bolts a little more on one connecting rod, detach the cap and the bearing insert with a little more care and then pull out the connecting rod and the remainder of the bearing insert from the crankshaft journal; however it's beneficial to clamp the connecting rod along with the bearing and the cap in a way that the parts don't get mixed up. Perform this process to the other connecting rods, being very cautious not to damage the crankshaft journals with the bolts. Last, wash with solvent not intermingling the parts, then dry until they are thoroughly dry, especially the oil holes.

As a final step, the connecting rod side clearance must be rechecked.

Before removing the connecting rods from the crankshaft, you should check the endplay (side clearance) with a feeler gauge.

Clean the number one connecting rod journal on the crankshaft and install the number one connecting rod into place. Ensure that the mark on the side of the connecting rod is facing the front of the crankshaft.

Lubricate both halves of the bearings of connecting rod number 1 with moly-based assembly lube and install the connecting rod nuts or bolts. Tighten them in three steps. Repeat this procedure for the remaining connecting rods. Do not mix up the connecting rods and caps, and do not install the connecting rods backward. After installation, rotate the connecting rods by hand and check for any obvious binding. As a final step, recheck the connecting rod side clearance.

While removing the connecting rods, you should be very careful not to nick or scratch the crankshaft journals with the connecting rod bolts.