1030 Primer Pump Question??

John Saeli

Well-known Member
Been 6 years or so restoring a 1030. Got to the primer pump, which is shot. CASE wants over $800 for a new one, or $330 for a re-man. I think I can take mine apart and fix it. However, I do not understand it's operation as I do not find a check valve in it anywhere. Can anyone further enlighten me on what I'm not understanding?
 
I'd trash that one and use the late Bosch push type hand primer, installed on the supply pump inlet side, 2 447 010 033 assembly number like the Case 70 series use. Would be a tight fit but the late primers just push down and spring back up. Early type needed the handle unthreaded to be used.
 
I use one from a 7050 Allis Chalmers that I get from the diesel shop. Will hook right up.
 
I googled the number you posted, but that cartridge is the same as we stock for the '70 Series. The threads on it look to be 1/4" pipe, however the threads on the '30 series are a very fine large dia, maybe 7/8". To use the later cartridge, I'd have to change the base, and CASE does not offer a part number for it that I can find in the '70 series books. As a matter of fact, the early '70 series used the same pump as the '30 series. But still the mystery, where is a check valve? It needs to be below the pump in the horizontal line.
 
The one I'm referring to needs to go on the supply pump inlet valve next to the block, just like the 70 series as it has M16 X 1.5 thread pitch. It won't fit where the original one is. The Stanadyne/Roosa primer like AC and others use with 1/4 inch pipe fittings have built in check valves, I've never had an original 1030 primer apart.
 
Geez John that is crazy, I know I have one new NIB, but need that for my "1030". I will look this weekend if you want to see if there is more then one.
Regarding Case's price, obviously they don't want to sell anymore of them. Amazing how they have disintegrated Case parts supply, or charge outrageous prices.
 
The check valves and springs are in the bottom base part (what the hand primer threads into) where the fuel line enters and exits to the filters. You have to take the base off and disassemble it.

Brad
 
If you look close at the pump base you will see what looks like a jam nut on the fuel line in and out of the pump. Those are the check valves. If not there they have been removed to keep them from plugging up with junk from the fuel tank.
 
Our 930 had problems with the primer pump last summer. All it needed was a good cleaning. Crud had built up inside it over the years and greatly restricted the fuel flow. It seemed as if the primer pump wasn't working. After cleaning it filled the three filter canisters very quickly.

Matt
 

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