Cub Cadet Wiring

MoMac

Member
Trying to sort out the wiring on a Cub Cadet 70 narrow frame. It is 12 volt but the battery was set up as 12 volt to ground and negative wire went to the starter push switch on the dash. It was always slow to turn over even with new battery. Thinking about sending the starter/gen out for a rebuild but would like to get the wiring sorted out first. Thanks, Mike.
 
(reply to post at 09:35:31 03/06/23)

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Here's a wiring diagram. Normally, one needs to polarize the generator before startup after a polarity change/correction, but this unique starter-generator system will be polarized as soon as the starter button is depressed.

Check all connections in the cranking system for loose/poor/dirty/heated connections and repair as needed before condemning the starter-generator.

If the battery is ''good'' and the connections are good, you can have a look inside the starter/generator, it's NOT as scary as it may seem!

https://isavetractors.com/content/SG_Repair.pdf

Downloadable Delco starter-generator manual.
 
I am thinking all Cub cadets were wired 12v. negative ground. That said, if someone decided it should be positive ground, then the regulator is probably polarized to charge that way.

If it has a starter generator it won't spin over briskly like a later style starter will turn it. That is just the nature of the beast. And you have about a 1 to 3 ratio between the starter generator and the engine.

I am thinking the IH Cub Cadet website has wiring diagrams on it.
 
the regulator is probably polarized to charge that way.


''the regulator is probably polarized to charge that way''

That's an ''old mechanics wives tale'', VR's do NOT get polarized, GENERATORS do.

As I wrote, since this is a starter/generator it is instantly polarized during cranking.
 
Just another anomaly of classic view vs modern view.

Many that only use classic never read replies, they only reads the o.p.

Then they give an answer/reply.

That is why in modern where you see all responses as you read the convo, you will see multiple answers
that say the same thing repeated many times.

The diagram steve links to is not just a colored version, it is from a different source.
 
O.k. Then why does the instruction sheet with a new regulator contain instructions for polarizing the regulator after installation?
 
T.R.K.:

Then why does the instruction sheet with a new regulator contain instructions for polarizing the regulator after installation

My guess is, that the Manufacturer of the Relay, don't know the application, nor the OEM of the equipment, thus the instruction to cover the bases. In Cub Cadet's case, using the Delco-Remy system, it is not necessary to polarize.
 
(quoted from post at 22:31:39 03/08/23) O.k. Then why does the instruction sheet with a new regulator contain instructions for polarizing the regulator after installation?
ecause the writer doesn't know 'jack', because "the instruction to cover the bases", because they want to be sure the generator is polarized correctly so that you don;t damage the new regulator. The quick jumper connection is typically done at the regulator for convenience (all needed terminals are in close proximity)....handy. In any cast, all that polarizing does is set the magnetized generator pole pieces such that when started it produces the voltage polarity the is the same as the battery being connected to when the cut out closes.
 
Hmmm...my CC 70 is 12 volt negative ground. Positive battery to the push button, negative to chassis ground.
 
The op said his is wired positive ground.
Just pointing out that it should be
negative ground. As every CC is.
 

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