48 ENGINE2.2LDICOR Fig. 105 Fig.106 l Remove piston rings from piston using ring expander. (Fig.104) l Remove carbon deposits from piston. l Clean piston and piston rings thoroughly. l In case cylinder bore taper and ovality is within specified limit, then same piston and piston rings may be reused. l Examine pistons for cracks, scoring, other damages, like Ring groove wear, piston pin bore wear, spring clip groove wear/ damage etc. l In case of any one piston with any one of this defect, complete piston set should be replaced. Fig.104 l Examine piston rings for scoring, lateral clearance (Fig.4) in piston ring groove and butt clearance in cylinder bore (Fig. 105). BUTT CLEARANCEOF PISTONRINGSHOULDBE MEASURED INUNWORNPORTIONOF CYLINDER BORE (Fig. 106) l In case of any piston ring with any one of this defect, complete ring set should be replaced. l When cylinder bores are re-bored or honed, pistons and rings of appropriate size should be used. Piston size grade is stamped on piston crown.
RkJQdWJsaXNoZXIy MTIwNTUz