hey safari 2000,
i just replaced the "o" rings and shaft seal in mine this weekend so here goes:
take the air cleaner assembly off , take the mass air sensor and the air inlet hose off.then take the fan shroud off ,should have 8 bolts,top and bottom.once u get the shruod off it really opens everything up.you can take the fan off for easier acess. I didnt take mine off just to save time. take the belt off .you'll have to have the power steering pulley puller/installer.take the power steering pulley off with the puller. now under the van i took the brace to the front off for easier access.You need to take the hoses off before you unbolt the pump from the bracket.you;ll need a pan to catch the fl.uid .i took the low pressure hose off first to drain the system. then the resavoir hose then the high presure hose(you'll need a 16mm line wrench for this).after the pump drains take the three bolts off the front i think they are 12mm or 13mm.then take the nut off the back its a 15mm nut its on a stud thats on the engine block.Dont take the two nuts on the back of the pump off 'they only hold the bracket on.installation is reversal of removal. the info matrixx sent you is a pretty good representation of what you need to do. Hope this helps.