I picked up a used IP for $45 and not knowing its history (it doesn't have any play in the shaft), but I figured the thing to do would be to tear it down and re o-ring it, re-seal it, and give it a good going over.
2 things....
Do I need to oil the o-rings and stuff as I put them in?
The warning tag says that the pump must be pre-lubed before installation on the engine...does this just mean that it needs to have diesel in it and turned a few cranks before someone tries to run an engine with it?