Voltage Regulator

[Steph 5]

I purchased a 12 volt voltage regulator from Amazon for a Kohler 8hp

NEW REGULATOR FITS CUB CADET TRACTOR 100 70 KOHLER GAS ENGINE 1118779 1118381

https://www.amazon.com/gp/product/B01AIVTILC/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1

but on the output - we are getting 16 volt.

The original was a 275746-S

Did I purchase the wrong voltage regulator?  Any ideas?  Please advise.  

Thank you for any assistance!!!

[Burnerman 758]

Is your Delco starte/generator listed as being comparable? If so I believe there’s an adjustment on the old style voltage regulators. 

My son just got an engine with a starter generator so I’m just starting to figure out how it all works. 

[adsm08 1,434]

Oh goody, I just ordered that same one from eBay.

[953 nut 51,682]

This information about S/G units may be helpful.

Taking care of your Delco Remy Starter Generators

Jan 30, 2015 01:45 PM | Bolens 1000 in Tech Tips / How To

delco-remy bolens cub cadet garden tractor starter regulator
 

Over the years many garden tractor manufactures used these Delco Remy starter generators & Regulators so I figured I would do a little write up on taking care of your Regulator and Starter to prolong its life and keep your machine running trouble free.

There were two common types of starters. A "stubby" one and a longer starter which was most common. There were also different versions of bearings used. Some had all ball bearings and others had a bearing near the pully end and a bronze bushing on the other end.

 
Long starter w/ bushing above
Approx 7'' end to end on the main base with slotted screw

 
Stubby version w/ dual ball bearing above
Approx 6'' end to end on the main base with slotted screw
Basic Operation:

Starter/Generator- Pretty simple this is the unit that when activated by the solenoid turns your engine over to start once the engine is running the generator aids in keeping your battery fully charged.
Basic components include Brushes,armature,field coils

 

Voltage Regulator- This regulates the amount of current/voltage that the starter/generator puts out.

This is critical to ensure your battery does not overcharge or undercharge. The insides consist of windings,temperature strip & contact sets that are spring loaded (Almost like a points and condenser)

When the starter is running the contacts repeatedly open and close in sequence depending on the voltage needed back to the battery
These can be adjusted and serviced if overcharging is encountered(See the wisconsin repair manual for proper procedures, a few different styles were used)

 


Do's and Donts:

*Always use a good battery! Do not use a battery that is dead or jump start a dead battery. These Starter/Generators are designed as a maintainer charger only and are not meant to bring a dead battery back to life on a regular basis! Many people end up ruining their starters because of this!

* It is normal for these to be hot to the touch , being a sealed unit these have an operating temperature of about 300 to 350 degrees!

*Let the parts warm up before making a reading/Adjustment! The delco service manual states starter and regular need at least 15 minutes to get to operating temperature.

* Check voltage output frequently especially on models without a ammeter, On a voltage meter you should get a reading between 12.2 to 13.9 volts MAX, anything over 14 volts on a constant basis leads to over charging and makes your generator run hotter making parts wear out faster.

A simple cleaning and adjustment of your regulator can often correct many issues you may experience with charging.

* Do not crank longer than 30 seconds at a time, this also will severely damage your starter over time.

* If you have the bushing starter keep it oiled! These have a felt wick that was soaked in oil from the factory and when serviced by a shop.
a few drops every now and then is fine do not over oil.

*All extra accessories such as lighting must be attached to the "L" terminal of the regulator

* Keep all contacts clean

*Keep the battery clean

For more detailed information on the principles of operation of the Regulators see this link below which is a 1 page sheet on the Basic Principles of Operation of the Delco Remy Regulators

To help Identify what terminals are what here is a picture I found of a NOS regulator with instructions
 

Hopefully this helps clear things up. If you are uncomfortable doing the repairs yourself look for a local electrical shop they often can bench test both regular and starters to determine what is faulty if you are not sure.

Delco Also does a decent job of stocking parts for these and most parts are readily available!

[lynnmor 6,777]

5 minutes ago, 953 nut said:

 

Voltage Regulator- This regulates the amount of current/voltage that the starter/generator puts out.
When the starter is running the contacts repeatedly open and close in sequence depending on the voltage needed back to the battery
 

 

For this reason, digital voltmeters often can't take the average reading necessary.  An old analog meter with a needle will work the best as the needle can't move so fast and the average is displayed.

[adsm08 1,434]

1 hour ago, lynnmor said:

 

For this reason, digital voltmeters often can't take the average reading necessary.  An old analog meter with a needle will work the best as the needle can't move so fast and the average is displayed.

 

I am starting to think I want to ditch my ammeter and replace it with a volt meter.

 

Ammeters are not super useful, as the amp demand can change and so without knowing the amp demand knowing the amp draw is pretty useless. Voltage output SHOULD stay fairly constant, within a given range, and so it is a much better indicator or charging system function.

[ebinmaine 63,138]

7 hours ago, adsm08 said:

 

I am starting to think I want to ditch my ammeter and replace it with a volt meter.

 

Ammeters are not super useful, as the amp demand can change and so without knowing the amp demand knowing the amp draw is pretty useless. Voltage output SHOULD stay fairly constant, within a given range, and so it is a much better indicator or charging system function.

 

 

Ammeters do have their place on these tractors because they do give you an indication of charge or discharge.

I don't have them on any of mine and I likely never will because they can cause extremely serious problems if I shorted out the wrong way.

Basically what it comes down to is that if a voltmeter goes bad it's an inconvenience. If an ammeter goes bad it can destroy the tractor and everything else around it.

 

[adsm08 1,434]

1 hour ago, ebinmaine said:

 

 

Ammeters do have their place on these tractors because they do give you an indication of charge or discharge.

I don't have them on any of mine and I likely never will because they can cause extremely serious problems if I shorted out the wrong way.

Basically what it comes down to is that if a voltmeter goes bad it's an inconvenience. If an ammeter goes bad it can destroy the tractor and everything else around it.

 

 

You are right about what happens if an ammeter goes bad. But if you know what you are looking at the same charge/discharge information can be learned from a voltmeter.

[ebinmaine 63,138]

4 minutes ago, adsm08 said:

 

You are right about what happens if an ammeter goes bad. But if you know what you are looking at the same charge/discharge information can be learned from a voltmeter.

Agreed.

[gwest_ca-(File Mod) 10,498]

This old Kohler service manual has a good section on the starter/generator system

Also Briggs and Stratton has a section in this older manual

Garry

[WHX?? 46,774]

I use the ADGDR6004 from here. http://www.psep.biz/store/delco_alternator.htm

Scroll down to the bottom.