help needed with 904
Ok, now look at all the corresponding surfaces where rings ride to make sure they are fairly flat and don't have grooves in them.
Inside the pump stator where the shaft went through, the front drum where it rides on the pump stator and the governor housing.
All the places where rings ride.
If you want to crack the pump open go ahead, but note which side of the inside gears is up because you want them to go back in the same way later so they don't have to mate with the pump surfaces again and cause a loose pump.
You will be changing the bushing and seal both anyway, so you will need to open it up.
There is only 2 parts in there, so no big deal on anything falling out and getting lost.
See you tomorrow most likely.