Just to add, front suspension needs greasing around every 1000 miles. Make sure you squirt enough in with grease gun to see some old grease pushed out, then wipe this away. Finish with brake cleaner on discs as grease often finds its way onto them during cleaning process. Each side has an upper grease nipple at top of kingpin and a lower one on sliding stub axle. The lower is the most important in getting grease to where its needed.