SAFARI

50 ENGINE2.2LDICOR l Finish journals by lapping them with 320 grit lapping cloth of suitable width. l After grinding recheck main bearing and crank pin journal dimensions. l Also recheck run out of crank shaft. l Thoroughly clean crank shaft with kerosene. Use wire brush for cleaning oil holes. IT ISESSENTIALTORECHECKCRANKSHAFTFOR CRACKSANDBALANCEAFTERGRINDING l Apply grease to all machined surfaces, if crank shaft is to be stored. Crank shaft must always be stored in vertical position. l Thoroughly clean main bearing caps and corresponding machined surfaces of crank case. l Install main bearing caps without bearing shells in their respective positions on crank case. l ENSURETHATSERIALNUMBERSONCRANKCASE ANDMAINBEARINGCAPSAREMATCHING.ALSO CAPS ARE IN SERIAL ORDER AND NOTCHES FORBEARINGSHELLSAREONSAMESIDE. Fig. 109 Fig. 110 CYLINDERBLOCK l Check cylinder block for cracks by pressure testing method. Clean cylinder bores, bearing surfaces, oil passages in crank case thoroughly. Check water jackets for leakages by blowing air at a pressure of 5 bar & then dipping the cylinder block in the hot water (temp of water 70° to 80°C) THE BLOCK WITH ANY LEAKAGES / CRACKS SHOULDBEDISCARDED. l Check crank case mating surface with cylinder head for unevenness with the help of straight edge and feeler gauge (Fig.109 & 110). If necessary grind this surface just to clear unevenness. l Ensure that the minimum height of crank case is not less than the specified minimum height.