CAV Pump Part Needed

Texasmark1

Well-known Member
Ok you "old salts". I need some help. MY 3000 is an early '65 with the CAV pump. The I and T manual for the 3000, page 49 Figure 136 shows a side view of the pump. Right in the middle of the picture and the pump is the fuel inlet and my adapter, the plate with 2 screws that accepts the fuel line cracked. Any ideas where to get a new one and mounting gasket.

I found a couple of numbers on the pump: Serial number is partially damaged, looks like R2xxx8. Then there is a DPA line with the numbers 3232858 stamped therein.

Thanks for any help here.
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While in the I and T, I came across some verbiage about "Diesel engine flutter" that can occur with CAV pumps. Mentions C5NN9N022 A and 2 each B type "fuel line pressurizing valves" that fit between the pump outlet and the fuel lines to the injectors. Question is, how would one recognize such a thing? Any particular rpm where it's observed, like a gentile loping at idle to about 1200 rpms where it goes away kind of thing?

Thanks for any help here too.

Mark
 
The Official Ford/New Holland online parts site has exploded views of the pump. Is this the part number E0NN9G578AA? It calls it an adapter plate.

The part is available from a number of sites. Price is about $40. Some are aluminum, some are steel.
 
That's the housing pressurizing return valve, not inlet. Early pumps used aluminum covers, later used steel cover valve assemblies. Some engines have what CAV/Lucas/Delphi "irregular exhaust beat" that can be caused by the blade rotor. Has to do with how the blade slot location is in relation to the outlet port. Sometimes several rotors need to be tried before the "right" one is found.
 
Al fixed me up on the part.

Dieseltech sir, describe what the engine does when affected if you will. I described what mine does, not a big deal, but it makes you wonder if you are giving the "mains" a workout if you leave it loping for any length of time....not a problem moving down to idle speed or moving on up to 1200 or so where it stops.

Thanks folks for the prompt replies.
 
The rotor slot phasing to the injection line outlet ports problem applies to three cylinder pumps only. Engine may sound like it's missing, as one cylinder gets less fuel during the charging cycle than the other two do at light load/idle speeds. Does not hurt anything, just sounds strange, and looks odd on the test bench too. Stanadyne also has service bulletins pertaining to the same issue with some JD applications, similar to CAV bulletins for Ford and Perkins. Engines that may have IEB will run fine under full load though. Sometimes any engine low idle surge can be the nature of the engine too, caused by governor design. In some cases it's made worse with owners who set the low idle speed too low.
 
Thanks for that info. On idle rpm, I notice its specified a lot of times/places at 700. Mine must have the problem. Glad to know it's no biggie. On doing something about it...like installing the adapters, it works fine.....I'll leave well enough alone. Seems everytime you mess with something something else breaks.
 

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