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John Deere Tractors Discussion Forum
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4020 injector pump

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jimscotland

09-13-2007 14:46:28




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Can anyone help. We have a 4020 hfwd syncro which we"re doing up. time for the fuel system!
Dont think its the original pump so if anyone can make something of these numbers id be grateful.

DBGFC-331-2AJ, 1918065 and AR70140

Tried the AR number in jdparts but it came out blank.
At present the engine runs well, will run down to 500 rpm smoothly and pulls well but is quite smokey at idle and when working. The engine has just been done up. your comments are welcomed

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msb

09-13-2007 20:15:20




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 Re: 4020 injector pump in reply to jimscotland, 09-13-2007 14:46:28  
Tractor serial number please?Should be a DBG 633 Can't be a 331. There would only be 3 ports on the pump head. Only way I can explain it would be to think the rebuilder had two pumps torn down at the same time and was replacing both housings and mixed up the I.D. plates.



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jimscotland

09-13-2007 14:55:08




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 Re: 4020 injector pump in reply to jimscotland, 09-13-2007 14:46:28  
Forgot to say engine serial no is 302335



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mmmpuller

09-13-2007 15:58:37




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 Re: 4020 injector pump in reply to jimscotland, 09-13-2007 14:55:08  
The pump number you have is for a 3 cyl 152 ci
engine in 510 tractor , the first three in the part number says how many cylinders it is. The john deere part number also matches the pump number you listed--hope this helps



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