| 摘要 |
<P>PROBLEM TO BE SOLVED: To stabilize attitudes of cotter segments and to prevent any engagement failure with a valve stem by a simpler arrangement. <P>SOLUTION: A retainer assembling apparatus, in which a retainer is assembled to a valve stem via a cotter engaged with an engaging groove formed on the valve stem and comprising a pair of cotter segments, includes: a cylindrical body in which the retainer with the cotter mounted thereon is brought into contact with a lower end thereof and the valve stem can enter from the lower end; a holding portion which holds the retainer contacting the lower end of the cylindrical body; a push-up shaft which pushes up the pair of cotter segments into the cylindrical body; and an axial body which is arranged in the cylindrical body to be coaxial with the push-up shaft and to be coaxially movable. The cylindrical body includes a tapered inner circumferential portion formed in a tapered shape radially enlarged toward the upper part, on an inner circumferential wall lower portion thereof. <P>COPYRIGHT: (C)2013,JPO&INPIT |
