James A Milford , CT January 01, 2024 Appliance: Samsung Washer WF45N5300AV/US-00 Samsung Washer Wf45n5300av/Us-00: Error code ub. How to replace Washer Spider Bolt. Changed spider arm (drum shaft assembly). AppliancePartsPros.com video was outstanding in guiding me through the repair. Do-It-Yourself Rating: Repair Time Estimate: 2+ hours