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John Deere Tractors Discussion Forum
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Roosa Master DM pump

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backwoodsfarm

03-31-2008 17:24:34




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Was wondering if anyone knew of a place to get parts for this pump. It is on a JD 4040 with 359 Turbo engine. The problem is that the throttle linkage is leaking at the pump so I'm assuming there are o-rings in there, and unfortunately JD can't help me with this pump. Pump is original with the lead seals intact, tractor smokes a little blue at initial start up and then goes away. Runs great but I hate to see the liquid gold dripping on the ground. Thanks.

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jdemaris

04-01-2008 05:41:53




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 Re: Roosa Master DM pump in reply to backwoodsfarm, 03-31-2008 17:24:34  
DM pump is similar to the DB, and you can put new throttle-shaft o-rings in pretty easy - they come in the kit.
Complete seal kit costs around $12-$18.

Deere stopped selling injection pump parts years ago - you have to buy either - OEM from a Stanadyne dealer - or aftermarket from many sources. I've been using Spaco.

24370V is the OEM Stanadyne kit for your pump and Spaco is 07500 - for DB4, DM, and JDB pumps.

There is also a DM only kit - for 4, 6, and 8 cylinder engines. Standadyne # 24372 and Spaco # 012640.

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backwoodsfarm

04-01-2008 04:45:11




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 Re: Roosa Master DM pump in reply to backwoodsfarm, 03-31-2008 17:24:34  
Gee, you fella's wouldn't happen to have a diagram of that pump or a step by step on how NOT to drop the keeper would you? Ha, ha. I've done the cover and shafts on a roto-diesel and a lucas cav so I'm not a complete rookie, don't want to mess anything up though.



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WTW

03-31-2008 17:52:00




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 Re: Roosa Master DM pump in reply to backwoodsfarm, 03-31-2008 17:24:34  
Any fuel injection pump repair shop can get you the o-rings for the throttle control shaft. You will also want to get the top cover gasket. You will need to cut wire seals and remove cover to gain access to get to the keeper on shaft to remove shaft to replace o-rings. Only caution other than to keep every thing clean is do not drop keeper inside pump when you remove and install it from shaft. I got one of these to do on a 4240 that I have the parts for that I have not got done. Good Luck, DW

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Bob

03-31-2008 17:47:02




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 Re: Roosa Master DM pump in reply to backwoodsfarm, 03-31-2008 17:24:34  
The "O" rings are pretty easy to replace, and nothing else will get messed up, if you are CAREFULL.

If the throttle shaft bores/bushings are badly worn they will have to be replaced, for the "O" rings to seal well, though.

Dipaco should have the pump seal kits.



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