ARIA

ENGINE

PISTON AND PISTON RINGS

1. Remove piston rings from piston using ring ex-

pander.

2. Remove carbon deposits from piston.

3. Clean piston and piston rings thoroughly.

4. In case cylinder bore taper and ovality is within

specified limit, then same piston and piston rings

may be reused.

5. Examine pistons for cracks, scoring, other dam-

ages, like Ring groove wear, piston pin bore

wear, spring clip groove wear/ damage etc.

6. In case any one of the piston has any defect, the

complete pistons set should be replaced.

7. Examine piston rings for scoring, lateral clear-

ance in piston ring groove and butt clearance in

cylinder bore.

8. Butt clearance of piston ring should be measured

in unworn portion of cylinder bore

case of any piston ring with any one of this de-

fect, complete ring set should be replaced.

13.When cylinder bores are re-bored or honed, pis-

tons and rings of appropriate size should be

used. Piston size grade is stamped on piston

crown.