Originally Posted by dave1980_300sd

yes, I got the tool at the dealer. it was about $45. I couldn't find it anywhere online much cheaper than that, and figured it was worth it to just be able to grab it at the dealer and do the job that much faster. still not too bad price wise... even including the tool it was barely over $50 total for me.

if you haven't already, it'd be a good idea to read up on delivery valve seal replacement in the archives... there are some parts of the delivery valves that you definitely don't want to remove. I used a pick and tried to disturb as little as possible when removing the copper washers (the o-rings come out with the part the special socket removes)... apparently going much deeper than the copper washer as far as removing things goes can cause big problems later on. the part immediately below the copper washer was hard not to disturb a bit, but I think it's the stuff further below that that you really don't want to remove. as long as you don't use a magnet you'll be fine.

good luck,

dave