| 摘要 |
A rocker arm has a cold-formed, one-piece metal body of generally U-shaped cross section throughout most of its length. The body has a bottom wall and two generally parallel side walls which extend upwardly therefrom and are structurally integral therewith. The rocker arm body has a recess at one end to engage an end of a push rod and a surface at the other end to engage an end of a valve stem. The side walls of the body have aligned circular openings therein through which a cylindrical bushing extends and is affixed to the side walls by brazing or the like. For a pedestal mount, the bushing has an elongate opening facing downwardly to receive a pedestal and has a large upper opening for clearance around a portion of the pedestal. Small oil reservoirs are formed between the bottom wall of the rocker arm body and edge portions of the bushing adjacent the large upper opening. |
