7520 fuel pump problems

[SPYDERLK]

I think the problem was air somewhere in the system. I pulled the pump again, replaced the fuel filters, checked all the fuel lines. i also used a boroscope to look inside the engine for that washer, and it's not in there. It's quite a large washer, and since it's a lock washer, it's pretty thick when not compressed, so there wasn't room for it to fall past the idler gear. Thankfully it's not in there. I just misplaced it somewhere. So I reinstalled everything, very carefully bled the lines and the pump. My plan was to do this and then bring it to a mechanic when it didn't run. But when I went to crank it, it fired up just like new. :cool2:

Good news! Definitely not air because that would have been purged quickly by a running engine. Im encouraged to learn that the gear cannot slip registration when the pump is removed. That will set my mind more at ease when I fix mine leaking at the same gasket.
larry

 

[Navasot]

Good deal :thumbsup: