| 摘要 |
A valve lifter assembly for a pushrod-operated internal combustion engine has a housing provided with a novel system of oilways which allow separate lubrication of each of two cylinders within which the tappets slide. The tappets comprise a body member, a hydraulic lifter disposed within a socket in the body member and a cap above the hydraulic lifter, the tappet being so designed that the socket on the cap which receives the lower end of the pushrod actually lies within the body member. The valve lifter assembly has a pushrod in which the threaded section of the adjusting member has a pair of flat, parallel surfaces on opposed sides thereof so that the threaded section, rather than a separate hexagonal section, can be grasped by a wrench for adjustment of the length of the pushrod.
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