5105 Fuel injector pump removal

I guess I should start at the beginning . . .

My 5105 died while running, and I eventually discovered lots of water in the fuel separator. Another Einstein here that didn't read the manual and so I didn't know I was supposed to be draining it every ten hours. I don't use this tractor much so it sits, often with a half empty or less tank of fuel and builds up condensation in the tank. Lesson learned - fill tank before parking everytime, and drain water every 10 hours at least.

After I disassembled and reassembled the water separator and priming housing etc. and got it all clean, I primed the system and turned the key. It turned over for about 15 seconds and then just quit. I eventually discovered the 30A key switch fuse was blown. So, I replaced it . . same thing. No surprise - a blown fuse usually has a cause and until that is fixed you just keep blowing them. Called the dealer and support guy said to remove the plug from the water temp sensor above the injector pump that when they go bad it will blow that fuse. So I did that. Still blowing fuses.

Called him back he said i must have removed the wrong one I said I don't think so - he says take your phone out to the tractor let me walk you through this so I did. Sure enough after walking through step-by-step he agreed I had performed the steps exactly as he had instructed. So he says the shutoff solenoid must be shorted and that it is not separate on that Stanadyne pump and the whloe injector pump must be replaced - cost $base cost = $1020.

Hmm so naturally I do some checking and find a place where a guy there rebuilds them for much cheaper and says he can replace the solenoid for around $100 - I did some checking on him and everyone I called (other "old-timer" farmers/ranchers) knew of him and his reputation is sterling. But I'm having 9 kinds of heck trying to get this pump off, and now I just read that if I remove the pump the tractor will have to be re-timed. The support tech at the dealership where my dad bought the tractor is not sue how to remove the pump (???) and neither am I. Has anyone had this experience with their 5 series tractor and if so was it the solenoid? And did you remove the pump yourself?


I know this is a lot of questions but I am trying to give enough info that if anyone can help they won't have to ask me to fill in some blanks. Thank you. Kevin.