Remove the spindle flange nut to service the spindle bearings. If youdecide to replace just the spindle housing that comes with bearings andspindle, transfer the original flange to the rebuilt assembly. Thecomplete trailing-arm assembly comes with the flange. The spindle has ahole for cotter-pin placement. When tightening the spindle flange nut,do not back off the nut to install the cotter pin. Always go tighter toline up the cotter-pin hole.