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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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Re: 1600 charging system

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Bob M

02-12-2013 18:23:48

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I converted a 1600 gas to an alternator a few years ago. Would think a diesel will not be much different.


A few tips:

- Use a Delco 10SI internally-regulated alternator. These were used on virtually all GM cars/light trucks from the mid-70's thru mid- 80's. They are cheap, easy to wire and are almost bullet-proof. (I used one off a 1980 GMC pickup simply because I had it around)

- Use the pulley/fan from the old generator on the new alternator.

- You'll need fabricate modify the generator pivot bracket - or make a new one - to fit the shorter alternator.

- Use the old generator tensioning bracket.

- You will probably need a new fan belt (the existing one will be an inch or two short).


Wiring is straight-forward:

- Remove and toss the old voltage regulator. Tape off the unused VR wiring.

- Run a 10 ga wire from the alternator output stud to the HOT side of the starter solenoid.

- Run a 16 ga wire from the LOW SIDE (not the ignition switch side) of existing generator warning light to the alternator #1 aux terminal. Make sure the warning lamp is not burned out (the alternator won't charge if the lamp is out).

- Run a 16 ga wire from the alternator output stud to the alternator #2 aux terminal.

Hope this helps...

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02-13-2013 04:46:50

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 Re: 1600 charging system in reply to Bob M, 02-12-2013 18:23:48  
Thanks for your reply. one question why cant you use the existing wiring that went to the generator. If I look at the wiring diagram it would seem that the wiring is going to same place i just need to switch my batteries to negative ground?

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J. Schwiebert

02-13-2013 09:17:43

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 Re: 1600 charging system in reply to Oliver1600, 02-13-2013 04:46:50  
One reason is the alternator has more output and the exisiting wire may not handle it. I would also use 14 gauge wires for the other wires.

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Bob M

02-13-2013 08:34:21

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 Re: 1600 charging system in reply to Oliver1600, 02-13-2013 04:46:50  
Yes - as long as the existing wiring is in good shape there's no reason it cannot be reused. (The wiring on my 1600 was questionable which is why I ran new wires...)


To reuse the existing wiring:

Connect the old generator ARM wire to the alternator output stud. Also connect together the BAT and GEN wires at the old regulator location. This will take care of the alternator-to-starter solenoid wiring.

Connect the old generator FLD wire to the alternator #1 aux terminal. Then at the old regulator location, connect the FLD wire to the low side of the generator warning light.

Be sure to connect the batteries NEGATIVE ground!


If wired right the generator warning light will burn when you turn the key on before starting the engine. The light should then go out after the engine is running.

Note: You may need to goose the throttle a moment after startup "turn on" the alternator - this is normal.

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OLarry from MD

02-13-2013 05:09:26

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 Re: 1600 charging system in reply to Oliver1600, 02-13-2013 04:46:50  
Well you can just use the hot wire that went to the regulator and hook it to a single wire alternator.I have pictures of my conversion in the tractor photos section at left.

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OLarry from MD

02-13-2013 05:19:24

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 Re: 1600 charging system in reply to OLarry from MD, 02-13-2013 05:09:26  
You do need to search for larry from md.

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02-13-2013 19:18:32

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 Re: 1600 charging system in reply to OLarry from MD, 02-13-2013 05:19:24  
Thanks everyone for your input and help, hope to get this project completed this weekend.

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