Roosa Master Fuel Pump

almainer · Mar 14, 2018

I have a 70's model Case 580B back hoe that has a 188D motor. Last week I found a broken drive shaft in the fuel pump. The fuel pump's model number is DBGFCC 431-40AJ. After taking it apart, I find a broken drive shaft with a part number of 10213. I call U.S. Diesel about a drive shaft and they tell me it's the wrong shaft for this pump. They, U.S. Diesel, show it should have a 20287 shaft. Does anyone know if the 10213 will work or if that's the reason it broke or will a 20287 fit in this pump and work with this motor? .. Thanks for any information you can provide.

ben brown · Mar 14, 2018

not sure about the shaft but i never seen one that was broken that the head was not sized up causing the shaft to break

almainer · Mar 14, 2018

Hi Ben and thanks for the reply. I am not exactly sure why, but the best I can conclude about why the shaft broke is, there was some water in the fuel line that was found after it wouldn't start and the tank was drained. The water may have been setting in the pump and frozen at the time I attempted to start the hoe and that frozen water caused the shaft to break. It was running great when I parked it during the summer, and with all the rain that we had, ( hurricanes, Mathew, Harvey and Irma)I suppose some water entered the fuel system and caused the head to freeze. That's my best assumption of what could have happened as after the pump was removed, I inserted a screwdriver into the drive slot to examine the head and it turns freely with almost no restrictions what so ever. I am open to any other sources to look at if you or anyone ha any other ideas of why it broke the shaft.

Thanks

Dieseltech · Mar 14, 2018

The shaft 10213 is the original shaft that uses a half moon key, most likely it's been replaced with a shaft drilled for a roll pin instead. I have some of the original shafts still. First thing I'd do is press the old hydraulic head apart to find WHY it seized and broke the shaft. Replacing the pump and shaft without knowing WHY is risking breaking another pump and shaft. Just repaired a JD 4020 with a good used head and shaft from some core pumps on hand. Heads can seize by dirt, water, dropped line bolt washer, stuck injector, over-torqued delivery valve screw, timing gear failure, etc. With the old head pressed apart the seizure location will tell the cause, so it can be corrected BEFORE risking damage to the replacement pump.

almainer · Mar 14, 2018

Hi DieselTech and thanks for the reply. I am not a mechanic by any means, but I did remove the pump after finding out it wasn't pumping fuel and that's when I discovered the water in the pump which, of course, as a result of water in the fuel tank. If anyone around my home town in Western N.C. knew anything about trouble shooting or rebuilding a fuel pump like this, I would have them take it on, but, me, reading and listening to others on this subject, tell me if the head turns smoothly with a screwdriver, most likely, and I emphasize the term "most likely", it isn't frozen and will work after the new shaft is installed. I am open to other areas to check for a problem, but I'll doing it blindly because, as I stated, there is no one close to me who would know what to look for.
Thanks for your input on this and I'll listen to any suggestions you may add.
Alan

Dieseltech · Mar 14, 2018

I just finished repairing an Oliver 1600 pump that had water damage inside, metering, delivery valves, and plungers stuck. Luckily shaft was OK, and after a complete tear down and cleaning, resealing, new tube, and other small parts it passed fine on the test bench. If you prefer E-mail is [email protected] for contact info. Anytime there's a shaft breakage issue I get REALLY NERVOUS, but could just be a bit paranoid repairing pumps over forty years..

almainer · Mar 15, 2018

Dieseltech. I made an amateur mistake yesterday and gave some ignorant information concerning my Roosa Master fuel pump. I did go to the shop and check it out, inserted a screwdriver through the shaft opening and proceeded to check the head. Unknowingly to me, the screwdrive's handle was loose on the shaft and when I thought I was turning the shaft, which was unvisible, I was in fact just turning the handle on the screwdriver. I checked it today with another screwdriver and found it to be locked up and will not turn, spin or whatever it's supposed to do. So, with this being found, I would like to get more information from you in regard to rebuilding the pump. Thanks for your time and consideration on this.
Alan

Tx Jim · Mar 16, 2018

Almainer
Welcome to YT
You could check with Bobby DiAntonio as he has several new Roosamaster inj pumps listed for sale in the YT classifieds. His phone # is 330-806-3945
Jim

Roosa Master Fuel Pump

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ben brown

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Dieseltech

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almainer

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Dieseltech

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Tx Jim

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