Watched You-Tube videos to understand the remove-and-replace process. A torx bit and a screwdriver were the tools needed for disassembly. The outter spring ring was difficult to re-install by myself, but the use of two woodworking light weight bar clamps provided the other two hands I needed to get the ring into position. Ran a load to test for leaks - none found. Thanks AppliancePartsPros.com.