150 Ton Jacking Cylinder Failure Analysis - Complete Teardown and Inspection

Learn the complete teardown and inspection process of a failed 150-ton double-acting hollow jacking cylinder through this detailed 28-minute engineering workshop video. Follow along as experienced machinists systematically disassemble the damaged hydraulic cylinder, starting with machining new pins on a lathe to create a shop-made adjustable pin spanner for removing the gland nut. Observe the step-by-step removal of failed seals, extraction of the cylinder rod, and discovery of extensive internal damage beyond initial expectations. Watch the methodical process of removing the inner tube, cleaning all components through hot washing, and conducting a thorough inspection that reveals the need for major repairs rather than simple seal replacement. Gain practical insights into hydraulic cylinder construction, failure analysis techniques, and professional workshop practices for heavy industrial equipment used in mining and earthmoving applications.