I was wondering what's the best way to remove the hpop. I'm putting on an upgraded one since mine i think bout went out on me once. I just don't know exactly how to remove the pump.

 

You have to pull the fuel bowl and all that. Once you have that out you need to pull the IPR, it takes a 3/4 and a 1 1/16 deep socket to get out. Then you have to pull the reservoir and inspection cover in the front. Think the cover is 8 or 10mm and the reservoir is 10mm deep socket. Once you get those off you have to pull the bolt on the pump gear, think its 18mm. Once that's out there is 2 bolts holding the hpop on, they are 10 or 13mm oh and don't forget the lines they are 13mm I think? Then it slides right out

 

http://dieselsite.com/pdffiles/adren...structions.pdf