Voltage regulator...

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Leewebb7
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Voltage regulator...

Postby Leewebb7 » Wed Jan 17, 2024 5:58 pm

Is this the correct voltage regulator??.I pulled it off my cub....it seems different inside then what I've seen online...
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20240117_175106.jpg
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tst
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Re: Voltage regulator...

Postby tst » Wed Jan 17, 2024 6:31 pm

that is a cutout relay for the early cubs, what year is your cub or serial # ?

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Leewebb7
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Re: Voltage regulator...

Postby Leewebb7 » Wed Jan 17, 2024 6:55 pm

1951

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Glen
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Re: Voltage regulator...

Postby Glen » Wed Jan 17, 2024 7:15 pm

Hi,
A 1951 Cub originally came with a voltage regulator. They have 4 posts to connect wires, and 2 coils of wire under the cover.
Someone has changed yours to something else.
IH began using the voltage regulator at Cub serial number 115403.
The cutout, or Relay IH calls it, was originally on top of the generator, and has a curved base.
The voltage regulator goes on a mounting plate beside the gen, like the pic in the 1955 Cub operator's manual shows. Below is the page.
https://farmallcub.com/rudi_cub/www.cle ... age-39.jpg

The page before the page above has wiring diagrams, and shows the routing for the battery to starter cable, if you need that.

You can check and see if it still has the original model number of Delco generator, it is 1100501.
The number is at the left side of the plate that was originally on the gen.
Below is a pic of the voltage regulator from Brillman. :)
Attachments
Cub voltage regulator 6 volts B.jpg

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Re: Voltage regulator...

Postby tst » Wed Jan 17, 2024 8:11 pm

the system that used the relay also used a 4 position headlight switch, the switch controlled the charging system, see if you have that switch , just count how many clicks in it from the off position

Jim Becker
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Re: Voltage regulator...

Postby Jim Becker » Wed Jan 17, 2024 9:45 pm

Since it appears that cut-out came off the top of the generator, they may be a pair that belongs together. The relevant questions right now are the number on the generator tag and the number of positions on the light switch.

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Glen
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Re: Voltage regulator...

Postby Glen » Thu Jan 18, 2024 2:15 am

The light switches used from mid 1950 - mid 1958 have 3 positions, and are for only the lights, since the tractors have a voltage regulator.
The positions are Off, Dim, Bright.

The older system was before Cubs had voltage regulators, you had to choose the charge rate yourself.
The 4 position switch has Low, High, Dim, Bright.
Low and High are the charge rates, Dim and Bright are for the front lights.
The 1947, 1949, and 1950 Cub owner's manuals in Rudi's Manuals tell about using the switch.
Both the switches have the same style knob.
Below are pics of the rear of the switches from TM Tractor Parts.
Pic 1 is the 3 position switch.
Pic 2 is the 4 position switch. It has a fuse, originally for the lights, on it.
The 3 position switch has a separate fuse for the lights, at the bottom hole of the dash.
Attachments
Cub switch.jpg
Cub switch 3.jpg

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Re: Voltage regulator...

Postby Leewebb7 » Thu Jan 18, 2024 7:56 am

I'll check all that today and let you all know....if someone put a cut out on it fir some reason I should be fine ust putting a regulator on it???...

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Re: Voltage regulator...

Postby Leewebb7 » Thu Jan 18, 2024 9:53 am

Looks like I have a 3 position switch, I only got three clicks...here's some pics...1101355 is the number on the generator
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20240118_090131.jpg

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Leewebb7
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Re: Voltage regulator...

Postby Leewebb7 » Thu Jan 18, 2024 11:04 am

Insides...brushes seem fairly new??...
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20240118_110351_copy_567x1261.jpg
20240118_110357_copy_482x1072.jpg
20240118_110351_copy_567x1261.jpg

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Re: Voltage regulator...

Postby Jim Becker » Thu Jan 18, 2024 1:48 pm

Leewebb7 wrote:Looks like I have a 3 position switch, I only got three clicks...here's some pics...1101355 is the number on the generator

A 3 position switch only clicks twice, once going from position 1 to 2 and once more going from position 2 to position 3. So which do you have, 3 positions or 3 clicks? I tried to identify it from the picture, but couldn't see well enough.

The generator number 1101355 is the correct one for the original Cub cut-out system, used from 1947 through mid-1950. The date code on your generator (0C25) is March 25, 1950. If you have a functioning cut-out, put it back on the generator and use it. Your generator looks pretty good inside. I'd clean it up a bit and put it back together. (Make sure the gaps between the segments of the commutator are cleaned out, free of any loose metalic chips.)

The question I get out of all this is whether the tractor is actually from 1951 or if it is from 1950. How did you determine the year?

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Re: Voltage regulator...

Postby JohnMihevic » Thu Jan 18, 2024 2:26 pm

Leewebb7 wrote:Looks like I have a 3 position switch, I only got three clicks...here's some pics...1101355 is the number on the generator


I have a 1948 Cub with cut-out relay. A few years back, my 4 position switch failed. I went to a Case IH dealer and bought a replacement. They sold me a replacement that was a 3 position switch. They said the 4 position was not available any more, The instructions were very good and were designed for the cut-out relay. I like the new switch. The positions are: Hi Charge, Low Charge and Lights On. The position that is missing is the "Dim" headlight mode. I sure don't miss that. The 6V bulbs are "Dim" enough when on a full 6 volts.

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Re: Voltage regulator...

Postby tst » Thu Jan 18, 2024 2:58 pm

Here is a flow chart for checking out a relay system
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07-Cutouttroubleshootingchartrev1_0.gif

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Re: Voltage regulator...

Postby Leewebb7 » Thu Jan 18, 2024 3:08 pm

The switch goes from off...then clicks in one position..then clicks..in another....then clicks in another.. I tried to get a better shot of the switch without taking everything off...the back of the switch looks like it has a spot for a fuse.... i got the year from the serial number.
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20240118_150446_copy_544x1209.jpg
20240118_150430_copy_542x1204.jpg

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Leewebb7
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Re: Voltage regulator...

Postby Leewebb7 » Thu Jan 18, 2024 3:51 pm

Glen..you said the four postion is low high dim and bright...maybe what I'm thinking is "off" is actually low?? Nothing is labeled...


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