Hello all. Does anybody know where I can get a diagram of the fuel system for my 98 6.5L TD. Having never worked on a diesel before, I would like a diagram so that I can fully understand how the complex fuel system works.

When I bought the truck 6 months ago, it turned out I needed a new PMD. I purchased a used one from a supplier reccomended on this site, and it worked great for about 3 months. Now I am having stalling problems again, and all signs are pointing toward the PMD. Fortunately, my PMD has already been relocated with aluminum cooling fins, so changing it is a snap, and this time I ordered a brand new one from the same site. Also, is the PMD really a constant source of failure? It is quite an expensive part that seems to be very failure prone. Does anybody have any suggestions to prevent this from happening again. Thanks in advance for your help.

Tom