Emergency Care and Transportation of the Sick and Injured ...

9. Ring lands: area between ring grooves that support the rings as the piston moves. 10. Piston skirt prevents piston from rocking and jamming in the cylinder bore. 11. Piston pin boss: pinhole in reinforced area of piston body. 12. Piston clearance: the space between sides of the piston and the cylinder wall. 13. Pistons are composed of ... ................
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