Hydraulic Swing Motor Assembly - Part Numbers 589-5725, 487-6234 Compatible with CAT E307, E307.5, E308, 308.5 Excavators Procurement Guidelines for Swing Motor Verify OEM part number and confirm assembly compatibility with CAT 307.5, including swing motor, reducer, and parking brake components Require bench test reports for pressure, swing torque, and internal leakage for both new and remanufactured assemblies For remanufactured units, ensure replacement of pistons, valve