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Farmall & IHC Tractors Discussion Forum
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Rebuilt 460D Injection Pump

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Ron Smith

06-29-2005 18:23:03




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Just picked up the rebuilt injection pump for the 460, so it is about ready to go back on. The guy told me that if the injectors are plugged, it could screw up the pump though. If that were the case, it could lock up the pump, so now I am reluctant to put the pump on without checking the injectors out. I guess there is no way to test the injectors on the tractor. (guess that"s correct). They have to be tested with a pop off machine. He said for this tractor, they pop off under fairly low pressure though, so he hasn"t seen too many problems with them. This tractor sat for at least 5 years, so there could be a problem there.

The other thing I haven"t figured out entirely is how to set the pump timing (time it to the engine). Since the pump shaft was twisted off, it is way off I"m sure. Looks like there is some type of timing mark on the hub on the end of the pump, but it doesn"t seem to line up with anything. If anybody has any pointers here, I"d sure appreciate it. Thanks

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Brian in Ne

06-29-2005 20:13:46




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 Re: Rebuilt 460D Injection Pump in reply to Ron Smith, 06-29-2005 18:23:03  
Those lines on the drive end of the mounting flange are for reference only. On your new driveshaft you will notice a dot on one side of the tang. This will match up with the dot in the drive slot of the head. ( Look down inside the drive end of the pump. ) You will also notice that the tang on the end of the driveshaft is offset. This is also another way that the shaft will only go in one way. I believe that the end that goes in the drive gear is tapered with a key
so that is pretty straight forward. Aftergetting the driveshaft in the gear and torqued,make sure the engine is on number one compression stroke, with the timing mark on the correct degree. Next see where the dot is on the
driveshaft. Pull off the timing line cover on the
name plate side of the pump. Remember that the mounting flange is the front and that the name plate should be to the outside. There should be 2 lines in the window. The cut line in the camring of the pump and the engraved timing line of the weight carrier. Now
you can look in the pump and on the drive shaft to see if they line up. Remember these will be mirror images of one another. Once this is established, go ahead and mount the pump. put on the washers and nuts on the mounting flange make sure your lines are together then tighten the nuts. Go ahead and put on the rest of the lines. I would have the nozzles checked just because. When you are ready to try to start the tractor leave the lines loose at the nozzles and crank over the engine till you get fuel at all the nozzles. You can tighten them as they start to get fuel, and the tractor should start to smoke and try to run. Need to also know if the advance is a load responsive one as it will need to be set after the pump is mounted and the tractor is running and warmed up. Good luck. If you have more questions I will try answer over this site.

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Brian in Ne

06-29-2005 20:17:16




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 Re: Rebuilt 460D Injection Pump in reply to Brian in Ne, 06-29-2005 20:13:46  
I just remembered, on the driveshaft seals use clean grease for lubrication or else it will mess up the seal and/or pilot tube.



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Ron Smith

07-01-2005 07:30:05




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 Re: Rebuilt 460D Injection Pump in reply to Brian in Ne, 06-29-2005 20:17:16  
Thanks Brian! Man, this will be a big help. I"ll have to read this a few times over, but I think I can handle it. I intend to pull those injectors out today for testing. I"ll then rotate the engine to the correct position and proceed with mounting the injection pump. May as well get that part done today. Hopefully, it is not too muddy out there. Thanks again. I will certainly post if I get stuck.

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