SERVICE MANUALCRANKSHAFT, MAIN BEARINGS, FLYWHEEL & CRANKCASESection 6INSTALLATIONPrior to Crankshaft installation, check the Crankcase fortrueness as follows:1.Using a lint-free cloth, wipe the bearing supportsof the crankcase free of oil.2.Support the crankcase bottom side up as shownin Fig. 24 using wooden blocks to level it.Figure 24. - Crankcase Bottom-Side-Up View3.Install the upper halves of the bearings (bearingswith oil hole in center) on the crankcase.a.If the original bearings are to bereinstalled, be sure they go to thepositions from which they wereremoved.b.The nibs of the bearings must fit intothe notches in the crankcase bearingsupports.4.Apply Prussian Blue on the crankshaft mainjournals and lower them carefully and evenlyonto the bearings. DO NOT install the bearingcaps and lower bearings.5.Rotate the crankshaft approximately one-halfrevolution.6.Remove the crankshaft evenly and inspect theupper bearings for an even transfer of bluingfrom journals to bearings.7.Replace any bearings that do not show an over-all even bluing.NOTE: It is advisable to replace all bearings withnew, if one of the originally used bearings has to bereplaced.8.When satisfied that the crankcase is in goodorder and free from any distortion and burrsaround the upper bearing seats proceed asfollows:a.Clean all bluing from the bearings andcrankshaft journals.b.If using the original bearings coat thebearing surfaces with a small amountof clean engine oil.c.Install the bearing halves (bearing withoil hole in center).d.Carefully install the crankshaft.CGES-185-3PRINTED IN UNITED STATES OF AMERICAPage 20
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