alternator

morris roessler · Aug 22, 2012

Have a 706 that has been changed from gen to alt.Some time ago i seen a pic of a alternator with a radioshack diode connected to it.Does anyone have that..Just cant seem to find it in the acrives... Thank In advance

Andrew Z · Aug 22, 2012

If you search Bob M"s wiring diagrams he list the part number in there. Otherwise any 1amp to 3amp diode will work just fine. Banded side goes toward the alternator.

Andrew

Janicholson · Aug 22, 2012

I"ll add to Andrews message with the idea that a one wire conversion (working) does not need the diode. If charge voltage at 3/4 throttle is 14.2 or so, it is fine. If not, and there is no connections at the small terminals on the Alt. I imagine it is a one wire system. Have it checked. 3 wire alts have one from the #2 terminal (or S if hitachi) to the big terminal on the alt. the other lead (#1 or L) has the diode in it going to the ignition. Jim

John T · Aug 22, 2012

To prevent alternator feedback from causing the coil to be energized (engine still runs with key off like when wiring a 3 wire GM 10 SI) even when IGN is off, a body can use:

1) A small diode (rectifier) (3 to 5 or more amps and at least 50 PIV will work) wired at correct polarity......

2) Or a small incandescent "idiot light" bulb which serves not one but two functions

3) Or a 10 or so ohm resistor.

I usually just use a resistor cuz you dont have to worry about its polarity,,,,,,,,,cheap n easy to buy and wire in and is durable,,,,,,,provides at least some degree of current limiting protection.

An incandescent idiot light provides some visual charge indication PLUS prevents feedback

Some gents (Bob M I think) even go so far as using an idiot light PLUS a shunt resistor so she still charges even if the light burns out !!!!

So there, "we report you decide" what method you prefer as any will work. Your tractor your choice

John T

oldtanker · Aug 22, 2012

That's shows how it's wired.

Rick

old · Aug 22, 2012

I use radio shack part #276-1661 for the diode and it is way over kill as in it is next to impossible to burn it out since it is rated to be more then what is needed and a pack of 4 costs around $2.50

morris roessler · Aug 22, 2012

Thanks guys for all the answers about making then alternator work on my 706.. I found them very helpful.. Thanks again to all.

alternator

morris roessler

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Andrew Z

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Janicholson

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John T

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oldtanker

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old

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morris roessler

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