Most regulators have
D E WL B F
Regulator has four poles:
D - Dynamo at generator?
E - Earth?
A -
F - Field at generator?
I assume A is battery power and I assume thru ignition switch
How far am I off
This will be negative ground.
Wiring Regulator
Wiring Regulator
Tractor poor, 59 Dexta, 61 & (3) 62 SuperDexta-s, 68 4000 Ford 4x4, 81 Ford 1100 4x4, 55-HD5G AC Crawler Loader, 1951 CAT D6 9U, 1967 160B Dynahoe backhoe and now a toy JD 850 4x4 loader compact.
Ferguson as example
http://www.fergusonenthusiasts.com/rest ... %2012V.pdf
Ok,
A = Ammeter (Batt)
In this example, it is positive ground.
Ok,
A = Ammeter (Batt)
In this example, it is positive ground.
Tractor poor, 59 Dexta, 61 & (3) 62 SuperDexta-s, 68 4000 Ford 4x4, 81 Ford 1100 4x4, 55-HD5G AC Crawler Loader, 1951 CAT D6 9U, 1967 160B Dynahoe backhoe and now a toy JD 850 4x4 loader compact.
Is the Dexta an A or B style generator
My assumption is the Dexta has a B circuit generator, right?
Soundguy laid out an elaborate explanation on another forum.
"On a b-circuit generator.. one side of the field is touching case ground.. the other side terminates at the field spade connector on the back of the genny.
Armature is the charge stud ( who indicated otherwise? )
On an A-Circuit generator, one side of the field coil contacts the armature... the other terminates at the field post.
I can post a pictoral diagram to explain the differences in A-Circuit and B-circuit genrerators, that show the field connections very clearly...
in fact.. here it is.. look at the lower of the 3 pictures.. it is a B circuit genny like a lucas... it should make sense to you now.
Ford used 2-brush A-Circuit generators up thru the end of the 8N run. ( 9n/2n were 3 brush gennies.. and some early 8n gennies were a bit weird too.. ) In any case.. with the introductuion of the NAA in late 52 for the 53 year, ford went to a B circuit genny... When ford dumped the 4 cyl tractors in 65, they went to the lucas B circuit gennies.. For practical electrical generation.. the B circuit gennies on the fords from 53-64 worked the same as the 65+ lucas gennies.. There were obvious cosmetic and manufacturing differences int he ford and lucas gennies, and different specs for current limitation.. etc.. but in generall.. all B circuits work alike..and All A circuits work alike.
A-circuit use a field that is internally connected to the armature on one side.. and a field post on the other.. field current is provided when the vibrating contact in the regulator grounds the field coil. There will also be a bias resistor in the regulator from the field contact to ground.. as the genny spins up, the residual magnetic field in the pole pieces starts low voltage generation in the armature.. which directly starts feeding the field.. this 'bootstraps' power generation up untill the cutout closes and the battery starts to charge.. with the armature providing power, and the regulator ground.. this is all A-circuit.. refer to the top left pic in the attachment.
Can't post the URL and the picture; just won't work.
Soundguy laid out an elaborate explanation on another forum.
"On a b-circuit generator.. one side of the field is touching case ground.. the other side terminates at the field spade connector on the back of the genny.
Armature is the charge stud ( who indicated otherwise? )
On an A-Circuit generator, one side of the field coil contacts the armature... the other terminates at the field post.
I can post a pictoral diagram to explain the differences in A-Circuit and B-circuit genrerators, that show the field connections very clearly...
in fact.. here it is.. look at the lower of the 3 pictures.. it is a B circuit genny like a lucas... it should make sense to you now.
Ford used 2-brush A-Circuit generators up thru the end of the 8N run. ( 9n/2n were 3 brush gennies.. and some early 8n gennies were a bit weird too.. ) In any case.. with the introductuion of the NAA in late 52 for the 53 year, ford went to a B circuit genny... When ford dumped the 4 cyl tractors in 65, they went to the lucas B circuit gennies.. For practical electrical generation.. the B circuit gennies on the fords from 53-64 worked the same as the 65+ lucas gennies.. There were obvious cosmetic and manufacturing differences int he ford and lucas gennies, and different specs for current limitation.. etc.. but in generall.. all B circuits work alike..and All A circuits work alike.
A-circuit use a field that is internally connected to the armature on one side.. and a field post on the other.. field current is provided when the vibrating contact in the regulator grounds the field coil. There will also be a bias resistor in the regulator from the field contact to ground.. as the genny spins up, the residual magnetic field in the pole pieces starts low voltage generation in the armature.. which directly starts feeding the field.. this 'bootstraps' power generation up untill the cutout closes and the battery starts to charge.. with the armature providing power, and the regulator ground.. this is all A-circuit.. refer to the top left pic in the attachment.
Can't post the URL and the picture; just won't work.
Tractor poor, 59 Dexta, 61 & (3) 62 SuperDexta-s, 68 4000 Ford 4x4, 81 Ford 1100 4x4, 55-HD5G AC Crawler Loader, 1951 CAT D6 9U, 1967 160B Dynahoe backhoe and now a toy JD 850 4x4 loader compact.
-
Meanderer
- True Blue
- Posts: 163
- Joined: Wed Apr 16, 2008 12:46 pm
- Location: Elora Ontario, Canada (transplanted from Crookwell, NSW, Australia)
G'day Wayne,
Sorry Wayne, I just posted the following and you had since posted the one above which I have not yet read. I'll remove this post if needed after reading what you have there.
NO!
(to connecting to dash switch)
"A" must be connected to the Solenoid Switch whether an Ammeter is connected inline or not.
This wire will carry the full current of the generator's capacity (67amps?) so no-way should it go through the switch terminal.
Your assessment on the D E & F are correct.
Cheers,
Rick
PS> Leaving post as it stands. I'm not going to comment on the description of the A & B type circuits .... No time to digest it ...
Sorry Wayne, I just posted the following and you had since posted the one above which I have not yet read. I'll remove this post if needed after reading what you have there.
NO!
(to connecting to dash switch)"A" must be connected to the Solenoid Switch whether an Ammeter is connected inline or not.
This wire will carry the full current of the generator's capacity (67amps?) so no-way should it go through the switch terminal.
Your assessment on the D E & F are correct.
Cheers,
Rick
PS> Leaving post as it stands. I'm not going to comment on the description of the A & B type circuits .... No time to digest it ...
'
Regards,
Rick
Regards,
Rick
Switch
Following that logic, then the "F" field should be switched?
or forget switch... running tractor = charging tractor.
I can see from the "Ferguson" example that the warning lamp on the 4 pole regulators is achieve by running jumper from "D" thru dashlamp to positive battery source...
My system was charging for years, but recently quit charging, and while the generator would provide above battery voltage, the regulator would not control it, I could close contacts, it would not adjust. Polarized generator, but regulator bad.
While I am in dash, I am installing a key switch to match my solenoid starter. My old button switch would occasionally not release...
Thats the background on my questions.
My button would stick cranking, and the only way to stop it would be to disconnect battery.
or forget switch... running tractor = charging tractor.
I can see from the "Ferguson" example that the warning lamp on the 4 pole regulators is achieve by running jumper from "D" thru dashlamp to positive battery source...
My system was charging for years, but recently quit charging, and while the generator would provide above battery voltage, the regulator would not control it, I could close contacts, it would not adjust. Polarized generator, but regulator bad.
While I am in dash, I am installing a key switch to match my solenoid starter. My old button switch would occasionally not release...
Thats the background on my questions.
My button would stick cranking, and the only way to stop it would be to disconnect battery.
Last edited by WayneB on Sat Feb 21, 2009 2:27 pm, edited 2 times in total.
Tractor poor, 59 Dexta, 61 & (3) 62 SuperDexta-s, 68 4000 Ford 4x4, 81 Ford 1100 4x4, 55-HD5G AC Crawler Loader, 1951 CAT D6 9U, 1967 160B Dynahoe backhoe and now a toy JD 850 4x4 loader compact.
-
Meanderer
- True Blue
- Posts: 163
- Joined: Wed Apr 16, 2008 12:46 pm
- Location: Elora Ontario, Canada (transplanted from Crookwell, NSW, Australia)
Sorry Wayne,
I don't want to mislead you. I haven't got any diagrams for Dextas. I believe Stefan has on his site but I can't access it for some reason. My internet connection seems to hang when I try to download it.
Anyway, What I said is true for Majors. I do recall something in my mind that tells me that sometimes the "A" connection is wired to the Multi-function light switch. I'd imagine the switch would be marked accordingly. Although a switch I just looked at from a different breed had no marking on any terminals of the multifunction switch.
Is your tractor a Diesel or Petrol?
I'm used to the Fordsons having the Starter Lever which operates a relay switch on the top of the starter. The lever engages the starter gear and at the same time operates the said Relay Switch which engergizes the Solenoid Switch (located near the Regulator on Majors but not sure where on dextas.) The Solenoid is the Heavy Duty switching of the heavy current (up to 450Amps) drawn by the Starter. (Not trying to teach you how to suck eggs).
If replacing a Button starter with a key starter, then just make sure that it is a "momnetary" type switch. i.e. only operates whilst being held in position. Like a car.
Brian or Stefan will probably put you on the right path.
Rick
I don't want to mislead you. I haven't got any diagrams for Dextas. I believe Stefan has on his site but I can't access it for some reason. My internet connection seems to hang when I try to download it.
Anyway, What I said is true for Majors. I do recall something in my mind that tells me that sometimes the "A" connection is wired to the Multi-function light switch. I'd imagine the switch would be marked accordingly. Although a switch I just looked at from a different breed had no marking on any terminals of the multifunction switch.
Is your tractor a Diesel or Petrol?
I'm used to the Fordsons having the Starter Lever which operates a relay switch on the top of the starter. The lever engages the starter gear and at the same time operates the said Relay Switch which engergizes the Solenoid Switch (located near the Regulator on Majors but not sure where on dextas.) The Solenoid is the Heavy Duty switching of the heavy current (up to 450Amps) drawn by the Starter. (Not trying to teach you how to suck eggs).
If replacing a Button starter with a key starter, then just make sure that it is a "momnetary" type switch. i.e. only operates whilst being held in position. Like a car.
Brian or Stefan will probably put you on the right path.
Rick
'
Regards,
Rick
Regards,
Rick
UPDATE Wire IN
Rewired my tractor. Installed key start switch off 1000 series ford tractor. Glow plug works, horn works, generator charging light works, set charge to 14.00 VDC for red-top OPTIMA.
Soldered old wires to regulator, did not come with push tabs-large not available locally.
Done - Thands for the feedback.
Wayne
Soldered old wires to regulator, did not come with push tabs-large not available locally.
Done - Thands for the feedback.
Wayne
Tractor poor, 59 Dexta, 61 & (3) 62 SuperDexta-s, 68 4000 Ford 4x4, 81 Ford 1100 4x4, 55-HD5G AC Crawler Loader, 1951 CAT D6 9U, 1967 160B Dynahoe backhoe and now a toy JD 850 4x4 loader compact.