1999 Volvo Penta "WT" Models Workshop Manual, Page 206Get this manual
6Oil galleries and passages7Scale deposits from coolant passages8Spray or wipe cylinder bores and machined surfaces with engine oilInspect:
1All block core plugs for lack of fit or leakage2Camshaft lifter bores for deep scratches and deposits3Cracks in the block aCylinder wallsbWater jacketscEngine mount bossesdCrankshaft bearing webseCrankshaft bearing bores and caps All crankshaft bearing bores should be rounded and uniform in inside diameter (I.D at all of the bearing supports The area where the crankshaft bearings contact the crankshaft bearing bore should be smooth If crankshaft bearing cap is found to be damaged, replace the cap and line bore the block