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John Deere Tractors Discussion Forum
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4010 timing injector pump

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Jerry Telker

04-11-2006 06:46:58




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When I posted my first question Bob gave me an answer which I checked. According to the numbers on the pump this pump was in all the 4010s and some 4020s. I checked the timing and set it at TDC as the 4020 pump said. Tractor doesn't sound good at high rpms. There is a pinging. I can't get the pump to set correctly at 14BTDC. At about 10BTDC it's better but still smokes some. The reason I can't get the pump set at 14BTDC is I'm at the slot limit. Any help or information would be appreciated. Thanks again!

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ET

04-11-2006 07:03:51




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 Re: 4010 timing injector pump in reply to Jerry Telker, 04-11-2006 06:46:58  
When the pump is upgraded the timing is changed to 8 degrees BTDC. There is no mark there unless someone prick punched it. I use a set of dviders to take the distance from 10 and 14 degrees and cut it in half using what we called a geometry construction back in high school. That was one of those useless things we had to learn. The distance of 2 degrees can then be marked back from the 10 degree spot to the 8 degree spot with the divider. I always punch mark the flywheel.

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4010 Pride

04-11-2006 09:24:40




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 Re: 4010 timing injector pump in reply to ET, 04-11-2006 07:03:51  
Yeah, I had or have the same problem. When I put my newly rebuilt injection pump back on I lined the flywheel up to TDC and realigned the pump with the punch mark where it mounts. The tractor runs great, but at high rpms, it seems to ping and miss a little. Usually only at full throttle or close to that. It still smokes white a litte, and I just had a full overhaul including a new crank, sleeves, pistons etc. Should it smoke like this?? Once she gets going under a good load, I don't notice it. I feel like if there should be another mark to line the pump up to after a fresh pump rebuild...then that could be my problem as well. It sounds like we have the same issue. I even had a mechanic tell me that the height of the exhaust valves needed to be adjusted. It doesn't lack power, but I'm just unsure about the adjustment.

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