Piston Ring: Service and Repair

Replacing Piston Rings on All Pistons
(Piston Removed)





Remove piston rings with piston-ring compressing pliers.

Note: It might not be possible to find the identification on used piston rings.

Put aside piston rings in correct sequence and installation position.





Installation:
Insert piston rings with the word "TOP" facing piston crown.
1. Plain compression ring "TOP"
2. Tapered compression ring "TOP"
3. Slotted oil-scraper ring with rubber-lined spring
Offset the contact points of the piston rings by approx. 120° to each other but do not position above the piston pin boss.





Measure axial play.
Axial clearance.





Measure end clearance.
End clearance.