Automotive Alternator on Compact Tractor?

[mcd176]

I have a question, Since I am building a cab for my L4200 and will be adding lights, backup camera, heater and AC in the future I was wondering about replacing my factory Kubota alternator with a high output truck alternator?

What is everyones thoughts on this and has anyone done it?

Thanks,

Mike

 

[Eagleview]

Only 3 things i can think of to consider besides bracketry and pulley fitment . Is yours currently self exciting ? Or does it have an exciter wire ? And does the tacho run off the alternator ?

 

[tommu56]

The simplest retrofit is a one wire one.

You just have to bracket it and one wire.

see link
Classic Truck Shop - One Wire Alternator, GM

tom

 

[Soundguy]

YUCKY!

A 3-wire job is MUCH preferable, and quite easy to rig up.

A delco 10 or 12 SI model is a good place to start for an alternator.

charge wire is a no biner.. hook yor old alt ( or vreg) charge wire to the charge stud.

the side plug has a 1 and 2 male spade lug.. loop the #2 lug over to the charge stud.. this is external sense for voltage regulation.. technically in a vehicle you run this to the battery to make up for charge loss inthe dozens of feet of wire found in a car.. on a tractor with 3' of wire harness.. just loop over to the charge stud. the #1 wire you run thru a 194 marker lamp to key switched power.. ths lets you see a lamp on when key on, then lamp off once started and alt charging .. usually 400 rpm or so... if lamp comes back on.. charging has stopped.. this is a classic idiot lamp.

ona diesel.. you don't need the lamp.. though a 5-10 ohm resistor would be nice to protect the alternator vreg module. you can lso use a diode capable of handling a minimum of 1a/50piv.. though 3a/200 piv is better. the diode will have it's cathode end marked with a stripe.. install that end toward the alternator, and the other toward the switched sid eof the key switch.

1N5408 is a ood diode number

at radio shack, both of these work: 276-1141 and 276-1661

gm delco alts come in about 35a and up models.. cheap.. easy. dependable... just get brackets and pulley.

delco 30si is ok.. but you need 15-45 ohms of resistance in it's excite wire... a bit of different wireing than the 10/12 SI

soundguy

The simplest retrofit is a one wire one.

You just have to bracket it and one wire.

see link
Classic Truck Shop - One Wire Alternator, GM

tom

 

[Diamondpilot]

Many guys put 12SI units on the Jinma Tractors since the factory one is only 15 amps or so. The 12SI units can be had with about 140 amps or more. Just get the right pulleys.

Chris

 

[JoelD]

YUCKY!

A 3-wire job is MUCH preferable, and quite easy to rig up.

A delco 10 or 12 SI model is a good place to start for an alternator.

charge wire is a no biner.. hook yor old alt ( or vreg) charge wire to the charge stud.

the side plug has a 1 and 2 male spade lug.. loop the #2 lug over to the charge stud.. this is external sense for voltage regulation.. technically in a vehicle you run this to the battery to make up for charge loss inthe dozens of feet of wire found in a car.. on a tractor with 3' of wire harness.. just loop over to the charge stud. the #1 wire you run thru a 194 marker lamp to key switched power.. ths lets you see a lamp on when key on, then lamp off once started and alt charging .. usually 400 rpm or so... if lamp comes back on.. charging has stopped.. this is a classic idiot lamp.

ona diesel.. you don't need the lamp.. though a 5-10 ohm resistor would be nice to protect the alternator vreg module. you can lso use a diode capable of handling a minimum of 1a/50piv.. though 3a/200 piv is better. the diode will have it's cathode end marked with a stripe.. install that end toward the alternator, and the other toward the switched sid eof the key switch.

1N5408 is a ood diode number

at radio shack, both of these work: 276-1141 and 276-1661

gm delco alts come in about 35a and up models.. cheap.. easy. dependable... just get brackets and pulley.

delco 30si is ok.. but you need 15-45 ohms of resistance in it's excite wire... a bit of different wireing than the 10/12 SI

soundguy

Posts like this remind me of how painfully inadequate I am when it comes to tractors and electronics.

Joel

 

[biggerten]

One more consideration is to consider a TEFC (Totally Enclosed Fan Cooled) model, tractors are usually used in more severe conditions than autos (mowing, etc).

 

[J_J]

What could be any more simple than a one wire alternator. Alternator, bracket, pulley, hook up and go. I converted my Ford 8N, and still use the 6 v start. Does quite well.

 

[Willl]

A 3-wire job is MUCH preferable

By who ?

 

[Soundguy]

One more consideration is to consider a TEFC (Totally Enclosed Fan Cooled) model, tractors are usually used in more severe conditions than autos (mowing, etc).

There are probably more 10si alternators in ag applications by retrofit than original charging systems..

soundguy