Alfredo Contaldo · video

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Alfredo Contaldo replaces a worn propeller shaft bushing and upgrades from a fixed three-blade propeller to a folding three-blade model.▶ 0:00 To remove the old propeller, he uses a mechanical puller and lubricant.▶ 0:46 When the shaft bushing shows several millimeters of play, he removes the locking set screws and drives the bushing out toward the propeller end using a rubber mallet and lubricant.▶ 2:13 He cuts the old bushing with an angle grinder to facilitate removal, taking care not to damage the shaft.▶ 2:22 The new bushing is inserted from the stern, lubricated with soapy water, and secured by drilling new pilot holes for the locking set screws.▶ 2:30 After installing the folding propeller with a torque wrench, he replaces the sacrificial zinc anodes on the shaft and the propeller hub.▶ 4:02 He notes that proper electrical contact is essential for the anodes to prevent galvanic corrosion on the shaft.▶ 5:33 Annual replacement of these anodes is mandatory to ensure the propeller and shaft remain protected.▶ 6:15

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