In my opinion, you do not need to limit yourself to single wire (plus the battery lead, don't want to confuse things!) alternators! On the 2 wire like I have on the DK, one wire supplies power to the alternator light on the dash and the other wire goes to the fuse box to sense battery load. If I were converting your tractor, I would just leave the connector for the lamp spade with no wire attached, and run a 18 gauge wire to the outlet side of a 10 amp fuse in the fuse box. You may already have the sensor wire to the fuse box, if so your ahead of the game. You get a better reading on battery load at the fuse box than at the battery or jumping the wire over to the output line on the alternator! One last thought, I did not find any alternators under 45 amps...you could use the 45 amp, but I'd change the alternator pulley to a larger diameter so it would reduce the RPM's/ output amperage. Look at the performance sheet in my original post and you can get an idea of amperage at a given RPM.
Kioti Alternator Substitute!
- Thread starter jbroxton
- Start date
- Views: 21614
In my opinion, you do not need to limit yourself to single wire (plus the battery lead, don't want to confuse things!) alternators! On the 2 wire like I have on the DK, one wire supplies power to the alternator light on the dash and the other wire goes to the fuse box to sense battery load. If I were converting your tractor, I would just leave the connector for the lamp spade with no wire attached, and run a 18 gauge wire to the outlet side of a 10 amp fuse in the fuse box. You may already have the sensor wire to the fuse box, if so your ahead of the game. You get a better reading on battery load at the fuse box than at the battery or jumping the wire over to the output line on the alternator! One last thought, I did not find any alternators under 45 amps...you could use the 45 amp, but I'd change the alternator pulley to a larger diameter so it would reduce the RPM's/ output amperage. Look at the performance sheet in my original post and you can get an idea of amperage at a given RPM.
BullyBarn
New member
jbroxton thanks for the money saving recommendation! With mowing season coming up, I knew that the temporary workaround of short use and back to the battery charger wasn't going to "cut" it.
Saw your post and replaced the $450 OEM alternator on my DK45SC this weekend with the $50 B2000 alternator from O'reilly's.
Due to the position of the plug on the new alternator, I had to add a few inches to the alternator wiring harness. The new alternator is a tighter fit, so I also added a few inches to the air conditioning wiring harness that runs between the alternator and engine block to prevent it from rubbing.
The pulley on the replacement alternator was the same size as the OEM. Glad that it was because the pulley shafts were different sizes. Since the new alternator is a bit bulkier, I needed a fan belt 1" longer than the original. Installing the fan belt before placing the bottom mounting bolt is definitely the way to go.
The exhaust pipe is so close, I'm not certain how the original alternator lasted as long as it did. I plan to repair the OEM alternator and keep it on the shelf.
With the money saved, I see a hydraulic top link in the near future!
Thanks again!
Saw your post and replaced the $450 OEM alternator on my DK45SC this weekend with the $50 B2000 alternator from O'reilly's.
Due to the position of the plug on the new alternator, I had to add a few inches to the alternator wiring harness. The new alternator is a tighter fit, so I also added a few inches to the air conditioning wiring harness that runs between the alternator and engine block to prevent it from rubbing.
The pulley on the replacement alternator was the same size as the OEM. Glad that it was because the pulley shafts were different sizes. Since the new alternator is a bit bulkier, I needed a fan belt 1" longer than the original. Installing the fan belt before placing the bottom mounting bolt is definitely the way to go.
The exhaust pipe is so close, I'm not certain how the original alternator lasted as long as it did. I plan to repair the OEM alternator and keep it on the shelf.
With the money saved, I see a hydraulic top link in the near future!
Thanks again!
