I've been told that there's a shaft in the injection pump that has a habit of breaking if it has sat for a while. Not sure how long this one has sat but I don't want to take a chance. If I remove it and it fights back, what's the next step? Is there a pump from another model that will work?
- Thread starter Grabatire
- Start date
Dieseltech
Well-known Member
- Location
- Akron, Indiana
PSB pumps are well known for broken plunger or quill shaft when turned after setting awhile with no use. ONLY chance of saving one is to have it looked at by well trained hands familiar with PSB pumps. If still on engine, DO NOT TURN ENGINE TO SET THE TIMING EITHER!!. Remove pump as is, where is. If pump HAS stuck parts, just turning engine by hand WILL wreck the pump, if it's not broken already. German Bosch inline A size will replace the PSB, but timing gear changes need made too as the inline pump turns 1/2 crankshaft speed.
jon f mn
Well-known Member
With a donor tractor an in-line pump will bolt on. You need everything from the block back including the throttle shaft and injector lines. Quite a few have been converted because of this. 7/830 and 7/870 pumps will work but you need the rest of the parts from the 30 series.
Dieseltech
Well-known Member
- Location
- Akron, Indiana
Are you sure about 770/870 pumps? They have a larger mounting pilot, and also bolt on the opposite side of the block on direct injected engines. The 730, 830, 930, and 1030 all have the same smaller mounting pilot.
Thanks fellas.
Dieseltech, I haven't tried to turn the engine yet. If I remove the pump first, and try to turn the pump by hand is there a possibility that I can damage it? What I mean 'by hand' is, without using a tool. Most pumps will turn by hand without too much effort, but I'm a bit spooked about this one now.
Dieseltech, I haven't tried to turn the engine yet. If I remove the pump first, and try to turn the pump by hand is there a possibility that I can damage it? What I mean 'by hand' is, without using a tool. Most pumps will turn by hand without too much effort, but I'm a bit spooked about this one now.
Dieseltech
Well-known Member
- Location
- Akron, Indiana
Yes, you can still break it by hand too if not careful.
jon f mn
Well-known Member
I haven't done it but have heard from many it can be done. I' could certainly be wrong about that. But I've seen several conversions on those tractors so I know the 30 series would work for sure. I know my 930 pulling tractor had a pump with larger plungers and I thought it was from a 2670 but it might have just been the plungers. Been too long now and I don't remember how it was done as I had it done at an injection shop. That was one of the things that was a waste of money on that project because without a turbo you couldn't burn all the fuel anyway.
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