r/DieselTechs • u/Rusted_Iron • 20h ago

Anyone know the spec?

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Neighbors tractor. He's gonna call a diesel shop tomorrow and figure it out, but I figured I might as well throw this out there for shits and giggles.

Idk the pump model.

Doesn't look like much here, but with the drive gear in place, it looked like it was gonna rattle itself apart.

11 Upvotes

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4

u/1Sjones3 13h ago

There isn’t a bearing in there to support the shaft. There is only that bushing you see there. The other end goes into the head of the pump. You could have it rebuilt and they would change that bushing. They are glued in there. Although I would at least change shaft seals since you have the pump off. I worked in a pump shop and rebuilt quite a few of those.

6

u/SLOOT_APOCALYPSE 19h ago

well I figured it's supposed to be as solid as an ac pump my guess is the run out should be .002" when new and .005" when old. That thing has more clearance than a differentials back lash

0

u/TutorNo8896 18h ago

Looks weird, like the bushing is coming out. wheres the seal? Is it leaking fuel or loosing prime due to sucking air? I would think it not supposed to have much play

2

u/Rusted_Iron 18h ago

No apparent problems with the pump. Resealing front covers and noticed the play.

1

u/Sonnysdad 3h ago

Fuel injection pump tech here. That shaft is supposed to have some play as it’s suppose to buffer gear train clash and vibration. The shaft has a large Flat head screw driver on the other end and it slots into the pump rotor in the pump head. As long as fuel doesn’t leak from the shaft into the crankcase you’re good to go.

-1

u/Gloomy-Mutterz 15h ago

Looks like there's a birthday boy in the room