polarizing gen & Indian nickel

JMOR

Well-known Member
Location
TX
Well, looks like no one had reason to take the bet. So polarize A & B just the same men!
https://forums.yesterdaystractors.com/viewtopic.php?t=1494097
 
(quoted from post at 15:22:51 04/14/21) Well, looks like no one had reason to take the bet. So polarize A & B just the same men!
https://forums.yesterdaystractors.com/viewtopic.php?t=1494097
I am replacing the voltage regulator on my Caterpillar D6B. I have been searching information about determining the type of charging system when I came across that thread. I was happy to find your post. Makes life just a little simpler.
 
Well I have no need to bet, and polarize them differently to avoid welding voltage relay points to ground. Jim
 
(quoted from post at 20:39:04 04/14/21) Well I have no need to bet, and polarize them differently to avoid welding voltage relay points to ground. Jim
lease explain how the contacts get "welded to ground" when BATT is contacted to ARM. Thanks in advance.
 
Well I believe I was instructed 52 years ago incorrectly. I have studied the diagrams and now believe jumping from bat to arm is risk
free and works. It stims from the idea that putting the hot conductor directly to the F terminal on a B circuit will load the regulator
points with the conduction of the armature. and putting hot to an A circuit F terminal will weld the points. So the teacher had us
disconnect the B type regulator and touch hot to the F terminal. The A type was Bat to Arm. I am fixed. Jim
 
(quoted from post at 10:24:50 04/15/21) Well I believe I was instructed 52 years ago incorrectly. I have studied the diagrams and now believe jumping from bat to arm is risk
free and works. It stims from the idea that putting the hot conductor directly to the F terminal on a B circuit will load the regulator
points with the conduction of the armature. and putting hot to an A circuit F terminal will weld the points. So the teacher had us
disconnect the B type regulator and touch hot to the F terminal. The A type was Bat to Arm. I am fixed. Jim
A+ ! I can only surmise that somewhere many moons ago, someone was worried that since folks accustomed to polarizing the "A" type , by using as wrench or screwdriver , to short two adjacent reg terminals together , might do the same with "B" circuit, then decided on the "remove the Field wire technique". As, generally the "A" terminals are B-A-F left to right and "B" are A-F-B.. I did say generally, because there are exceptions to terminal arrangements. Who ever came up with the different polarization idea this many moons ago suer did unnecessarily complicate many lives over the time. Such is life.
 
(quoted from post at 10:40:41 04/15/21)
(quoted from post at 10:24:50 04/15/21) Well I believe I was instructed 52 years ago incorrectly. I have studied the diagrams and now believe jumping from bat to arm is risk
free and works. It stims from the idea that putting the hot conductor directly to the F terminal on a B circuit will load the regulator
points with the conduction of the armature. and putting hot to an A circuit F terminal will weld the points. So the teacher had us
disconnect the B type regulator and touch hot to the F terminal. The A type was Bat to Arm. I am fixed. Jim
A+ ! I can only surmise that somewhere many moons ago, someone was worried that since folks accustomed to polarizing the "A" type , by using as wrench or screwdriver , to short two adjacent reg terminals together , might do the same with "B" circuit, then decided on the "remove the Field wire technique". As, generally the "A" terminals are B-A-F left to right and "B" are A-F-B.. I did say generally, because there are exceptions to terminal arrangements. Who ever came up with the different polarization idea this many moons ago suer did unnecessarily complicate many lives over the time. Such is life.
h, and thank you for your indulgence, Janicholson!
 
FUN SPARKY DISCUSSION YALL Ive enjoyed it. With all due respect, I'm still going to Polarize and tell others the way I was
taught and used 50 years never a problem, but hey anyone can do as they like with their tractor, fine by me.

For discussion, I will add on the B circuit in order to pass current from the VR's BAT terminal to and through the
internally grounded field coils you obviously need hot voltage, sooooooo if jumping BAT over to ARM on the Class B VR causes
hot voltage to be present on the Class B FLD control relay input (has to eventually get there to supply and regulate field
current to ground)

IFFFFFFFFF the VR's Field Current Control Relay contacts are closed ??????????? and
IFFFFFFFFFFF that field current control relay input has hot voltage present via the ARM terminal

INDEED IT WILL PASS CURRENT THROUGH THE FIELD CURRENT CONTROL RELAY TO THE GENNYS FLD POST TO GROUND THEREFORE POLARIZING

Personally Id rather NOT have to pass polarizing current through the VR's field current control relay in order for current
to flow through the fields to polarize BUT CHOOSE TO JUST JUMP VOLTAGE DIRECT TO THE GENNYS FLD TO AVOID IT HAVING TO PASS
THROUGH THE FIELD CURRENT CONTROL RELAY CONTACTS........

Hey its ones own choice how to do it I SUPPORT ONES CHOICES FINE BY ME but Im sticking to polarizing a B Cicruit by direct
jumping voltage to the FLD and NOT having it pass through relay contacts

Best wishes yall God Bless now

John T
 
(quoted from post at 14:04:37 04/15/21) FUN SPARKY DISCUSSION YALL Ive enjoyed it. With all due respect, I'm still going to Polarize and tell others the way I was
taught and used 50 years never a problem, but hey anyone can do as they like with their tractor, fine by me.

For discussion, I will add on the B circuit in order to pass current from the VR's BAT terminal to and through the
internally grounded field coils you obviously need hot voltage, sooooooo if jumping BAT over to ARM on the Class B VR causes
hot voltage to be present on the Class B FLD control relay input (has to eventually get there to supply and regulate field
current to ground)

IFFFFFFFFF the VR's Field Current Control Relay contacts are closed ??????????? and
IFFFFFFFFFFF that field current control relay input has hot voltage present via the ARM terminal

INDEED IT WILL PASS CURRENT THROUGH THE FIELD CURRENT CONTROL RELAY TO THE GENNYS FLD POST TO GROUND THEREFORE POLARIZING

Personally Id rather NOT have to pass polarizing current through the VR's field current control relay in order for current
to flow through the fields to polarize BUT CHOOSE TO JUST JUMP VOLTAGE DIRECT TO THE GENNYS FLD TO AVOID IT HAVING TO PASS
THROUGH THE FIELD CURRENT CONTROL RELAY CONTACTS........

Hey its ones own choice how to do it I SUPPORT ONES CHOICES FINE BY ME but Im sticking to polarizing a B Cicruit by direct
jumping voltage to the FLD and NOT having it pass through relay contacts

Best wishes yall God Bless now

John T
orry, John, but there is absolutely no difference between type A and type B as far as current passing thru the field control relay contacts when they are each polarized by connecting BATT to ARM......exactly the same. Polarizing field current passes thru those field contacts either way with A or B.
 
No problem but Id rather NOT pass current through those relay contacts (anytime I can avoid it) which I do by unhooking the
FLD wire and jumping it over to BAT to Polarize a CLass B system

Hey, thats just my method Ive done for 50 years never a problem but you or anyone is free to do it as you please. Theres more
then one way to skin a cat lol

Best wishes JM

John T
 
(quoted from post at 15:17:48 04/15/21) No problem but Id rather NOT pass current through those relay contacts (anytime I can avoid it) which I do by unhooking the
FLD wire and jumping it over to BAT to Polarize a CLass B system

Hey, thats just my method Ive done for 50 years never a problem but you or anyone is free to do it as you please. Theres more
then one way to skin a cat lol

Best wishes JM

John T
hat is your method of avoiding field contact current with the "A"-type?
 

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