Deere 450c wiring questions

dimanche 27 avril 2014

Matthis here again.

I got some great advice on this forum, when we replaced the transmission case on my friends Deere 450C dozer. Thank you all who answered.

However, from the work we did on the engine and trans, some of the wiring is either not hooked up. He had it painted, and there is some wiring that Im not sure where it goes. Up by the alternator, there is a single wire with a clip, that when I tested it for continuity, it lit up with the wire on the alternator that goes to the ground terminal. So i'm assuming its for a ground to what? Also a little farther back near the starter wire, theres 2 wires crimped together on a lug, that has power to it at all times. I looked at the starter, and theres the solenoid wire, battery wire, and 2 small wires off the battery wire that runs into the harness. these two other wires were hanging there loose, and if it would have touched, any metal surface, would have sparked. The lug is a small one for a size #10 bolt, so I don't think it goes on the starter. Any idea where that goes. As of now, its taped up so it wont short to anything.

I have a service manual for this thing, and looking in the book for the alternator, it's showing an external regulator that bolts to the alternator, and I've noticed it having 2 field terminals. On the dozer itself, there is only one field wire terminal, and no external regulator. I believe the S/N is in the 22000 area, so would it have an internal regulator. The amp gauge doesn't seem to move and could be bad. Will install new amp gauge, and see if it's charging. Chances are it isn't because after a bit of using, we have to put the charger on. Can a person use a truck alternator to replace the original one, or should we have the original one rebuilt? seems like this one is sealed up to get no dirt or dust in it.

Thanks for any help. If someone has a nice schematic of the wiring for this unit would be great too. Hard to troubleshoot, when all the wires are one color after a paint job.




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