Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Piston Ring, Engine


On these engines, replacement rings are available in standard size only. If piston ring clearance is excessive, the piston and cylinder liner must be replaced. Refer to ``Cylinder Liner, Replace'' procedure.


Piston pins are a matched fit with the piston and are not available for separate replacement. Piston pins are pressed into the connecting rods and will not become loose enough to cause a knock or tapping until after very high mileage.