| 摘要 |
The object is to prevent the adjusting screw from being pushed in while rotating when a load is applied to the adjusting screw that tends to push in the adjusting screw. In a lash adjuster comprising a cylindrical housing 12 inserted in a receiving hole 11 formed in the top surface of a cylinder head 2 and having an internal thread 13 on the inner periphery thereof, an adjusting screw 15 having an external thread 14 on the outer periphery thereof and in threaded engagement with the internal thread 13 on the housing 12, and a return spring 17 biasing the adjusting screw 15 in a direction to protrude upwardly from the housing 12, the adjusting screw 15 having a protruding end 19 protruding from the housing 12 and supporting an arm 7, the surface of the protruding end 19 of the adjusting screw 15 is made of a material that does not react with oil additives of oil containing organic molybdenum.
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