Dear Land Rover people I need your help. My husband is working abroad and he asked me to have his beloved truck greased. My problem is I have forgotten the name of the parts that need doing. All I know is they are the shiny ball shaped things at the back of wheel that make it steer. Please help so I can book it in without looking a fool. They are only on the front. Bess his truck is a prehistoric Discovery tdi. Thank you Trish