Gathering the Right Details for Hydraulic Component Repairs

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Before you can fix a hydraulic pump or cylinder, you need the model number, serial number, and a clear look at the failed parts. Grab your calipers to measure bore and rod diameters, note the port thread sizes, and check the seal type. Those tiny numbers on the pressure relief valve matter. One wrong o-ring size and you are back to square one, so take photos and write everything down.