roosa master fuel injection pump for Case backhoe

boatkopf

New User
I have a Case tractor from the "70s, a 480B, 188 engine. Not sure of the actual year. It isn"t an antique, but it is too old to find parts easily. Now the Roosa Master injection pump is shot, and I"m having trouble finding a replacement for it that isn"t more expensive than the original machine! Does anyone have information on the pumps for this engine? It is seized up and the shaft is broken. Could I find a more common pump and calibrate it for this motor? Any information AT ALL would be appreciated! Thanks, Tim
 
I don't think you are going to find anything else that will fit it except the same kind of pump. Best thing to do is have that pump rebuilt or try to find a used pump. You might be better off having that one rebuilt even if you have a lot of money in the rebuild. At least you will know what you have. I tried to take the cheap way out and bought a used pump off this site for 200.oo that I was told by the seller was an excellent rebuilt pump. It was a piece of crap. I ended up spending 450.00 on the original pump and it works great. You have to ask yourself if the tractor is worth spending five or six hundred $ on. In my case it was.
 
That pump is very common and all parts are available - OEM from Stanadyne/Roosamaster and aftermarket from Spaco. If your pump was not siezed, it could probably be fixed for less then $50 in parts.
Since it IS siezed - you're talking an extra $500 in parts to fix - but they ARE all available. Same basic pump is still in production. Not much different from the DB2 pumps used on GM 6.2s, GM military 6.5s, and Ford-IH 6.9s -in pickup trucks and Humvees.

In regard to parts in general for your hoe? I've got a 1967 Case 580CK and have been able to get any part I need. Zero problems from Case except the prices.

Deere Allis, Ford, IH et. al. use similar pumps. Your best bet is find a used pump from a Case 188D or 207D that still turns freely - put a $12 seal kit into it - and use it. I've got a pump from a 188D bolted to my 207D right now - in my 580CK. I had to recalibrate it, that's all.
 
Thanks. I"ve been doing some more research, but I"m having trouble finding sources of parts and not just places who want to rebuild it. Also, I"d prefer to buy an old good pump and calibrate it to mine, but we aren"t in farm country here and they are hard to come by. Where would you suggest looking for a used pump that would have a good chance of being functional?
What is a simple way to calibrate it, and where would I go to get technical data? I have a tech book on recalibration, but it doesn"t list fuel amounts for each pump. I have a lot of time in this tractor; it was going to be scrapped after the owners were told it would cost $10,000 to get it serviceable again. I"ve since replaced and machined most of the hoses and bushings, and this is a real blow to lose the pump. That"s what happens with an old machine, but after working on some of the new stuff I think it's worth the hassle! Thanks - Tim
 

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