hi m8 greasing pins are easy, you can get a grease gun from halfords/argos, the guns vary but easy to operate, i think most new ones come with a cartridge of grease which you slide into cylinder very much like a sealent gun works.
i paid £9.99 for the gun and i think like a £5 for the grease (lithium based)
from Halfords.
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easiest way to do it, it jack car up at front on leaf suspension (use peice of wood between jack and sus) and remove both wheels, so you can pump grease in and turn wheels, (make sure you clean the nipples first!! with a rag to stop grit dirt getting in which helps ware pin away, when you pump grease in you should see it coil out from underneath the knuckle,
i believ its exactly th same on BIS, but on early models the king pin grease nipple is in the stub axel and not the stub axel "carrier" as its says in manual. See the diagram below its from a BIS manual (they call it the grease "cup") :
:
Hope this has helped m8, make sure you get them done! Ask away if you get into trouble, its straight forward enough, but i had difficulty finding nipple
(never had done it before)
regards
