Toyota 90311-42035 Oil Seal

The crankshaft goes first, then the main bearing caps are fitted and torqued; the new Crankshaft Seal should then be fitted into the retainer, and then the retainer goes on the block. In the flank of seal contact with the crankshaft, you must ensure that there is no scratch or nick on the crankshaft that will harm the new seal of the lip and cause oil leakage; should this be the case with the crankshaft, a new or a new crankshaft has to be found. The Crankshaft Seal can be taken out from the retainer by means of hammer and punch, while supporting the retainer on wood blocks and noting the depth of the seal recess in the bore to fix the new seal in the right position. The retainer should be clean, and to the new Crankshaft Seal a thin layer of engine oil must be put to the outer edge of the new seal; the new seal must be pressed squarely into the bore; if a press isn't available the housing and the seal can be placed between two smooth pieces of wood and can be pressed into the vise and the force that is applied must be uniform. Lastly, the seal can be driven into the retainer using a hammer, only making sure to use a piece of wood so as not to concentrate all the force to one point. The lips of the seal must be greased with the clean engine or moly-based grease before the seal/retainer is slipped over the crankshaft, and then bolted to the block, after using the new gasket and metal sealant; making sure that the dowel pins are inserted before the actual installation of the seal. Last of all, the bolts are tightened to optimum torque which is slowly increased during the procedure.