allpa Height adjusting shims flexible anti vibration mount

Height adjusting shims are used for the leveling of the marine engine. Made of anti corrosive steel plate in order to resist the marine environment. The shims have identical size and shape of the flexible marine mount feet and avoid the use of the traditional height adjusting studs which are subject to cyclic bending moments are exposed to eventual ruptures. Most of the marine certification companies do not recommend the use of height adjusting studs. Reference is made to DET NORSKE VERITAS (DNV) rules for ships / high speed Craft – issue January 2001, Pt.4 Ch3 Sec. 1 F202. This requirement is referred to rigid mounting, but is considered applicable this topic.