Specialized Cylinder Remanufacturing Komatsu offers multiple cylinder reman options to match the needs of your machine and your current situation: exchange the complete cylinder assembly for a fast turn-around; or choose to exchange the cylinder rod or cylinder barrel as an even lower cost alternative. Hydraulic cylinders are disassembled and fully inspected. Rods, barrels and cylinder assemblies are then remanufactured to current Komatsu specifications. All wear and sealing items are replaced with new parts. Once assembled, cylinders are functionally tested on factory specified equipment through the full stroke of the assembly.