Part 4/10:
Once the vehicle is elevated, he proceeds to remove the cotter pin and the locking nut that secure the hub assembly. In the process, he encounters an issue — the cotter pin is twisted and stubborn, requiring him to straighten it with a hammer. This step underlines the importance of inspecting and replacing small but vital parts like cotter pins during maintenance.
He carefully pulls the brake calipers aside, exposing the old grease seal, which he notes was a source of earlier errors when not installed correctly. He emphasizes that he previously forgot to replace or properly seat the seal, which is critical for preventing dirt and moisture ingress.