PISTON AND PISTON ASSEMBLIES

摘要

A piston (10) is assembled with its correct piston rings (12) by the piston manufacturer before dispatch to an engine manufacturer or repairer. This is achieved by use of a piston ring retainer (14, 20, 22, 23, 29, 32, 37) which holds the rings flush with the piston surface and which is such as to allow the assembly to be packaged in a container not substantially different in size from the piston. The assembly can then be removed from the container by the manufacturer or repairer and be inserted into a cylinder bore of an engine with the rings correctly arranged.