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John Deere Tractors Discussion Forum
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5020 injector pump in 4020

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doug

04-18-2004 15:29:12




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I'm trying to put a injector pump off, I believe, a 5020 onto a 4020. The pump number is DBGFC 637-91AL. I've put the vertical drive shaft for a 4020 in it. Do I need to time it 180 degrees off, being the original serial no. tag is towards the block on a 4020? I'm assuming the rotation is the same, or is it?




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D ON

04-19-2004 13:10:00




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 Re: 5020 injector pump in 4020 in reply to doug, 04-18-2004 15:29:12  
THE ROTATION IS THE SAME , HOWEVER YOU WILL HAVE TO REVERSE THE THROTTLE LINKAGE SIDE TO SIDE. THAT PUMP (5020 ) HAS .370 PLUNGERS VERSUS .330 FOR THE 4020 DELIEVERS A LOT MORE FUEL THAN THE 40 20 SO SHE WILL BE A SMOKER.



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