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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.