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126 ENGINE 273 MPFI Dismantling PistonAssembly &Removal of Piston Rings: • Remove piston pin circlips using suitable circlip piler. • Remove piston pin from the piston by gently pushing it out. Use soft drift, if required. • Remove piston rings frompiston using suitable ring expander • Remove carbon deposits from piston. NOTE In case cylinder bore taper and ovality is within specified limit, then same piston and piston rings may be reused. Examine pistons for cracks, scoring, other damages, ring groove wear, piston pin bore wear, spring clip groove wear/damage etc. In case of any defect with any one piston, complete piston set should be replaced. Examine piston rings for scoring, lateral clearance in piston ring groove and butt clearance in cylinder bore. • Clean piston and piston rings thoroughly.