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Regulator Blues, calling reg guru's

P

pcp20us

Member
Ha guys.

I have a genny and 3 regulators setup on the bench for testing, spinning the genny with a drill.

2 work one does not.

The one that does not work, i have pulled apart and cleaned all contact points, check resistances and connectivity against one the good regulator

The faulty regulator. The cut out relay works the same as the good reg, also does the voltage regulator relay seem to work.

So physical the regulator seems to work, but i get no increase ( or change in voltage) from the A terminal on the reg.

On bad reg i get 12 v out of the D terminal on reg where as i get 14 + volts on good reg which is then regulatored by the VR relay.

So this tells me that with bad regulator connected the genny is not outputting 14 + voltage with increased rpm, which seems odd, but thats electrics for ya.

Any ideas, I ve spent to long done the regulator rabbit hole

:?
 
Welp. I have never been known as 'Tony the reg guru'.... but I am known as a yank that plays hunches.
I kinda doubt your hand drill is doing the job on the workbench. Some- most- old fashioned generators are like old fashioned power steerings.... got to be really wound up to get any results.
One of those VR's (no, not Victoria Railways)... might be/ have been- positive earth/6 volt, the other used to be 12 volt negative earth. Like a generator, it might need to be 'shocked' or 'polarized' to work with that genny- at the rpm's it needs to put out juice....
right. Now go to it. Best of British!!! Nay bloody worries mate, she'll be right...
 
I'm certainly no guru either, but trying to bench test regulators doesn't sound like a winning proposition.

Like Tony said, doubtful you're getting enough RPM with a drill to make the generator charge.

Here's what I would do...

Put the generator back on the tractor.

Polarize it. (Jumper from the A terminal, spark it to the non-grounded battery post.)

Start the engine, set RPM around 1500 or higher. Ground the F terminal, see if you get voltage from the A terminal. If so, the generator is working.

Then install the regulator of choice, be sure the base is grounded, cover on, in position it will be operating.

Then restart, set the RPM back up, see what you get.
 
Righto, thanks for the yanky hunchies,

The drill is doing the job as 2 of the regs are working and charging the battery. you do need to run the drill flat out to achieve this :shock:

I read you cannot polarize a regualator :?: and all regs are of 12v -ve ground tractors.

I did find info on doctor google where people give good info re testing the regs for resistance and that the vr shunt winding can go open circuit, so think i will do more testing.

Tony, only if i had some torches i could take to it with that and that would fix it :evil:

Cheers
 
After researching these regulators and how they work, i find them quiet fascinating how they do their job, all windings, induction and magnetism... Bit stuffed if i can work out this fault regulator.

I have it setup the same as the working regulator, but i think i have some worn points on the regulating windings, I am searching for replacement parts but don't like my chances of finding any.

I've read that the new regulators are very inferior to the original so determined to get this faulty one to work.
 
Thanks for the link, thats one funky document with the little characters running about :D

My Statement re the 12v -ve regulators was reference to my tractor setup not regulators in gerneral.

Back to my regulator blues.

The cut out/in winding is working as it should

I have discovered that i need to hold the armatuer closed on the regulator winding for it to achieve a charge state of around 13.5 volts or more. When i release the armature it seems to be connected as you can see it operating but there is no charge voltage. That tells me the contacts are no mating correctly, i have cleaned flatten and adjusted the armature several times.

RR maybe i should check the open circuit voltage of regulator winding... just typing out load again.

Dont think i ve made regulator guru staus yet :?
 
Just thought of something... since I am on the other side of the date line... I am 3 days late?
since all this is on a bench, I suppose my idea doesn't mater just now, but- as what confuses people on here now and then... if the reg is hooked to a battery... when the battery becomes fully charged... the VR will read zero.... because... it will not/ isn't suppose to- continue to try and charge... it will just..... regulate ... because... it is a regulator...
thought of this as I was watching a TV commercial...
 

Ha tony better late than never :), you must be in a time warp with 3 days:!:

Yep i have thought of this, so i flattened the battery with a spot light, but cannot remember the results :!: IT easy to get confused when you got a couple of tractors in the mix.. IT a bit like was that on this or that tractor :lol:

I found a way to test the VR winding to see it is providing the correct voltage for an ambient temp, around 16 volts, So going back into regulator land next time i get a chance :?
 
Ambient temperature??? In Queensland??? So what's that?? when water boils???
No wonder they're all buggered up!!! It's all melted in there mate!!
Douse with cold beer and call me in the morning...
 

Hi, Ok the beers boiled....

I have all regulator flying, it work out the genny i was using was a little bit intermittent, seemed to work great on the bench, not so good on the tractor. So thought i best check out the brushes.
The brushes located on the bottom of the genny was stuck solid, had to break it out of the holder, Got some new brushes and wham Everything is testing and working as it should....:D


Now where's that warm beer..
 
That's weird, usually it would be a short or 'earthin' in the tractor to make a gen work worst, not a wooden bench....ooooh... was the bench wooden? Or metal?? Ya got me brain all warmed up again....
A torch could have loosened up that flippin' brush ship shape n Bristol fashion!
A torch can also make beer very warm very quickly.... you need a torch mate...
 
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