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Case Tractors Discussion Forum
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More non pumping fuel pump (580ck)

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Doug Overkill

06-17-2006 19:00:27




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So I am still battling this fuel pump. I took it off and it was not seized and the drive shaft was still keyed to gear. I reinstalled the pump and saw thru the outputs that the shaft IS spinning. I resupplied fuel But no fuel comes out. If the pump spins and there is fuel to the pump, what else could be wrong with the Roosa Master pump?




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TexasWren

06-18-2006 11:21:52




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 Re: More non pumping fuel pump (580ck) in reply to Doug Overkill, 06-17-2006 19:00:27  
The reason most people don't work on their own injector pumps is just the hassle factor. You need specialized calibrated equipment, and a VERY VERY clean working area, preferably with filtered air. Because of the extremely close tolerances they operate at, a speck of silica dust too small to see can ruin an injector or a pump (which is why they have three fuel filters in a row, and why people get paranoid about even undoing the fuel lines in that area).

If you're interested in it working *well* it's better to hand it to experienced people. If, on the other hand, this is just a junker for learning experience, have fun, but don't expect great results.

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Doug Overkill

06-18-2006 07:54:42




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 Is Roosa Master THAT complicated in reply to Doug Overkill, 06-17-2006 19:00:27  
I am new to diesels but have never been scared off by the precise or complicated workings of a mechanical devise. I seem to be reading alot in this chat room that no one works on their own injector pumps. At $600+ to rebuild that surprises me. I have a manual on order so until then I can only guess.



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george md

06-18-2006 14:48:57




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 Re: Is Roosa Master THAT complicated in reply to Doug Overkill, 06-18-2006 07:54:42  
Doug , They are not that complicated but you will need a few special tools and know what not to loosen
so as not to change the calibration . If it has been sitting for some years , chances
are that the main pump plungers are stuck (gummed).
The thing is, you must empty the pump to get to them and you will need the spline drive tool to
remove the advance ball from the cam ring . Send me an email.

george

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Doug Overkill

06-18-2006 17:51:24




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 Re: Is Roosa Master THAT complicated in reply to george md, 06-18-2006 14:48:57  
OK, so I am just a weekend tractor mechanic and during the week am a rocket scientist, not really but I make parts and assemblies for rockets and satelites and other extremely close tolerance workings. So I can understand clean, I could even assemble the pump in a class 100 clean room. I also have seen diesel tractor repair facilities and that is not so clean. Special tools could slow the decision to attack this to a crawl, exspecially if I am going to spend the $600 (seems like common price for rebuilt pump) on tools to do a job on this tractor I hope to not do again. The tractor was running in the past few weeks. The nice woman who sold it to me thought she would be helpful and topped of the tank with gasoline. There are earlier posts of the saga which details my diagnostics.
The long and short of it is I was broke before I bought the tractor and now the thought of sinking a $600 rebuilt pump into it is depressing, maybe neccesary, but depressing.

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Roger (Mi)

06-18-2006 03:11:02




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 Re: Remove and take to diesel injection service in reply to Doug Overkill, 06-17-2006 19:00:27  
A Roosa Master is a self priming pump. If fuel is at the pump, the pump is good, and the stop cable is in the correct position, fuel should come out of the ends of the injection lines regardless of correct timing. If it doesen't, there is a MAJOR problem in the pump. Bite the bullet! Remove the pump and take it to a diesel injection service center.



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