Step1: Disconnect electrical power and allow the unit to cool completely.
Step2: Shut off and secure the oil system to prevent spills or pressure release.
Step3: Remove the access panel to reach the pump motor assembly.
Step4: Disconnect electrical wiring and label connections for correct reassembly.
Step5: Unbolt and carefully remove the old pump motor and gasket assembly.
Step6: Position the new motor with gasket aligned to the mounting surface.
Step7: Secure mounting bolts evenly, reconnect wiring, and ensure all seals are tight.
Step8: Restore power, check for leaks, and test oil circulation and pump operation.