Kettenbolzen-Versetzungsvorrichtung

摘要

A long link pin for a vehicle track is extracted cold from interference fit in bosses by means of a high pressure, short stroke hydraulic ram mechanism which includes a guide tube defining a guide enclosure into which short drift blocks may be loaded through a window on successive ram reciprocations. The drift blocks stack to form a drift which displaces the link pin. One drift block is arranged to bridge the side boss and guide tube, providing lateral support for the apparatus. The exposed part of the drift is short, thereby reducing risk of bending, and the ram is always close to the pin irrespective of pin length making a compact length displacement arrangement.