#John deere 1010 dozer engine series
10 series were the first Deere tractors to ever use the Roosamaster rotary pumps. I don't want to get overly complicated here, but I guess I don't know how not to. The timing at cranking does differ though with some other pumps used on 2010s and that can make a big difference in cold starting. Advance makes no difference with starting. The pumps are basically identical, but besides the fuel delivery, the timing advance curve is also slightly different. There are minimum specs when testing on the test stand, not maximum when it comes to fuel pumps at cranking speed. Being a used pump, if anything, it probably pumps a little less at cranking speed than a new pump.
The main difference in the fuel delivery between the two pumps is with the engine running and not so much at cranking speed. Too much fuel is not going to be your starting problem. Could it be turned up and getting too much fuel? Jason Z in MO wrote: The Diesel shop checked and the only difference between the 2DH and 1DH is the fuel settings. It does smoke a lot for those few seconds but its cold here. The Diesel shop checked and the only difference between the 2DH and 1DH is the fuel settings. I wasn't able to confirm if it has a 2010 engine so I decided to stick with the same pump. If you recall, this is the pump used on a 2010. something with the advance maybe? This is the DBGVC429-2DH pump which is want came off the tractor. Seems like it dies after the engine speed picks up. I confirmed #1 was at TDC, installed pump with index marks lined up. I used the glow plugs but it constantly would fire up and die. Got a little smoke first then it would fire up but died after about 2-3 seconds. After getting it all back together, bleeding and correcting a couple of fuel leaks I was able to crank it over. Couldn't wait to bolt it all back together so I put my bibs on and set up some lights. I got the pump and injectors back from the pump shop.
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