GM 91177272
Bearings

To remove the Piston, connecting rod, and bearing, start with the removal of the Cylinder Head from the cylinder block, the Oil Pan, and the oil pump strainer. With a ridge reamer, get rid of any ridge and carbon on the top of the cylinder bore to avoid damage on the Piston Ring lands. Mark the cylinder number on the pistons, on the connecting rods, and connecting Rod Bearing caps. Take off the twc nuts and the connecting Rod Bearing cap and place a piece of hose over connecting rod studs to prevent damage to the Crankshaft and cylinder wall with the Piston and connecting rod pulling out of the cylinder bore. Then break down and examine Piston and connecting rod assembly, followed by choosing a corresponding connecting Rod Bearing and Piston. Paint a thin layer of clean engine oil on the pistons, rings, cylinder walls along with the connecting rod bearings, and the crank pins. Attach a hose piece again over the connecting rod studs to avoid slinging while mounting. Make sure the arrow mark on the top side of the Piston is aimed at the Crankshaft pulley side. Use a j 8037 ring compressor (J 8037) for compressing the Piston rings and the installation of Piston and connecting rod into the cylinder bore. Tap the Piston head with hammer handle while keeping on pressing the j 8037 firmly against the top of the cylinder block until all Piston rings are seated in the cylinder bore. Demount the hose pieces from the bolt of the connecting rod and then mount the connecting Rod Bearing cap then secure the twc nuts, to tighten to 35nm (26 ft. Lb.). In conclusion, replace the engine Oil Pan and the Cylinder Head onto the cylinder block.

To service and repair the connecting Rod Bearing, start by removing the Cylinder Head from the cylinder block, the Oil Pan, and the oil pump strainer. Use a ridge reamer to remove any ridge and carbon from the overall top of the cylinder bore to avoid damage to engine Piston ring lands. Mark each cylinder number on the pistons, connecting rods, and connecting Rod Bearing caps. Remove the 2 nuts and the connecting-Rod Bearing cap, then a piece of hose over connecting rod studs to protect the Crankshaft and the cylinder wall when this Piston and connecting rod are removed from the cylinder bore. Disassembling and inspecting the Piston and connecting rod assembly and choosing the suitable connecting Rod Bearing and Piston. Put on a light coat of clean engine oil on the pistons, the rings, the inside walls of the cylinder bore, connecting rod bearings, and crank pins. Install another piece of hose over the connecting rod studs once more, to prevent damage in the installation process. Ensure that the arrow mark on the top of the Piston is on the Crankshaft pulley side, then with the Piston ring compressor (J8037), compress the Piston rings and install the Piston and connecting rod into the cylinder bore. Tap on the Piston head with a hammer handle taking the Piston ring compressor (J8037) held against the top of the cylinder block so that all Piston rings are seated. Remove the hose pieces from the connecting rod bolts, and put on the connecting Rod Bearing cap, and fasten it with 2 nuts by tightening them on to 35 nm (26 ft. Lbs.). Lastly, reinstall the engine Oil Pan and the Cylinder Head onto the cylinder block.