2005 Buick Rainier Engine Main Bearing Gasket

You should install the crankshaft rear oil seal, apply a 3 mm (0.12 inch) bead of GM P/N 12378521 to the rear oil seal housing, install the J 44219 guide pins into the block, slide the crankshaft rear oil seal housing over the alignment pins J 44219 and crankshaft, install the crankshaft rear oil seal housing bolts, except the 2 in place of the guide pins, remove the J 44219 guide pins, install the remaining 2 crankshaft rear oil seal housing bolts, wipe off any excess material from the bottom of the oil pan sealing area, install the flywheel and secure with the bolts, tighten the bolts an additional 50 degrees and install the transmission.

You should apply the engine oil to the outside diameter of the crankshaft front oil seal, use the J 44218 to install the front oil seal, remove the J 44218 and install the crank balancer shaft.