The job you have in mind would be similar removing and re-installing the Fuel Injection Pump on other Engines. However, retiming the Fuel Injecion Pump might be different and have different specs.
For a general idea find something similar in the DIY section:
DIY Repair Links
http://www.peachparts.com/shopforum/forumdisplay.php?f=82
http://www.peachparts.com/Wikka/DoItYourSelf