| 摘要 |
<p>MECHANICAL VALVE LIFTER -- -- A mechanical valve lifter including a cup member adapted to fit over the end of a valve stem, the cup member having a boss therein with an axial bore extending from one end thereof and a threaded bore extending radially from the exterior of the cup member to intersect the bore in the boss, an elastomer plug positioned in the bore of the boss, a piston member slidably received in the bore with one side thereof in abutment with the elastomer plug and the other side engageable with the end of the valve stem and, an internal wrenching head screw threaded into the threaded bore to engage the elastomer plug.</p> |
