Hi Jim
Suttonmotorsport is bang on, all my racks are greased.
Undo the clamps and remove the boots and clean them out.
Check ball loading, it should just hold arm still with track rod end fitted and check end bush lift.
(Smacka usually has bushes and ball/cup kits if needed).
Hang the rack up and put a container under it to catch the oil.
Put the rack on full lock and grease the rack teeth then repeat on the other lock.
Remove the pinion bolts and damper plate (depending on rack type Burman or Camgear) and slap some grease around in there.
refit boots, the rack will last as long as one of your finest paint jobs (possibly longer than me and you LOL)