it might not be the pump leaking why dont you check first and verify where its leaking from.

verify the fuel drain valve isnt leaking.


verify the service plug isnt leaking on the hpop.

you might not need to take it all apart.

 

alright. well sorta related... i also have 650 with the 7.3. i noticed the fuel bowl looks different. as in bigger and possibly in a different location. do i need a different gasket set for it for the fuel side. i figured i will just replace all gaskets and seals if i have to take it off anyway. little preventive maintenance never hurt right? was going to do the same on the 650 as well.
more insight maybe?
also, will the fuel lines on the fuel bowl leak for sure if i try to reuse them? or should i be able to reuse them without an issue?

 

**This kit contains: http://www.dieselorings.com/8-002ex-extended-hpop-o-ring-reseal-kit-with-complete-hose-fitting-repair-kit.html

1. The O-ring that seals the IPR to the HPOP.
2. IPR internal seal O-ring and split washer (full IPR reseal kit).
3. The O-ring needed for the fill plug at the top of the reservoir.
4. TWO O-rings for the inside of the high pressure hose connectors that seal the hose to the pump.
5. TWO O-rings for the HPOP fitting threads.
6. TWO interior hose fitting PTFE backup spacer rings.
7. TWO hose fittings stainless steel hose locking rings.
8. O-ring for the Black bypass nut (top front of the pump)
9. O-ring for the pressure port plug on the passenger's side front of the pump.
10. Packet of LocTite 680 to seal the hose fittings and rear plug in the pump.

** High Pressure Oil Pump Gasket 94.5-03 http://www.dieselorings.com/hpop-engine-mounting-gasket-96-03.html

** Replacement "non-serviceable" Long Threaded Plug http://www.dieselorings.com/serviceable-replacement-hpop-plug.html

** This complete 11 Viton o-ring reseal kit contains: WILL THIS WORK ON A F-650 TOO?!? http://www.dieselorings.com/fuel-bowl-reseal-kit-1999-2003.html

3 Viton (type A) or 3 Viton (type B) or 2 Fluorosilicone plus 1 Viton o-rings for the 7.3 yellow fuel drain valve.
2 o-rings for the Water-in-Fuel sensor/Fuel Heater
1 o-ring for the Fuel Pressure Regulator housing
1 o-ring for the regulator piston bushing
2 o-rings for the fuel back check piston assembly
2 o-rings for bowl plugs
2 - 1/4" sleeves for the fuel lines feeding the cylinder heads
1 - 5/16" sleeve for the fuel return line
1 - 3/8" sleeve for the fuel feed line.

Will this pretty much give me everything I will need? As I have said I just want to replace everything as it is my daily driver and can't remove it unless I am ready to fix it.