Ford 4000 dynamo to Regulator conversion(Help)

Genuineguy

Hi.

I have a ford 4000 tractor in which i want to remove the old Dynamo and Regulator and put in a straight forward Alternator.

Does anyone know what the below Regulator terminals do.






E (-) = Earth

D (ARM) = ??????

WL = ??????

F = Connection for the dash bulb to Alternator

B+ = Battery


The dash light F(F Field Current) has a connection from the regulator to the Old dynamo,

Where is the connection between the regulator and the Dash battery light,

As i will need to use a jumper wire up at the block connector up at the Regulator so i will have a straight connection between Bulb on dash and New alternator.

Does anyone know what the D the WL terminals are about.

Thanks.

Fishtits

From the left:

E = Earth (Chassis)
D = Dynamo (from the large/output terminal of the dynamo)
WL = Warning lamp (comes from the dash lamp)
F = Field (goes to the small terminal on the dynamo)
B = Battery (Live connection to the battery)

To convert to use an alternator, do the following:

Ignore E
Join D & B
Join WL & F

Use the large terminal at the dynamo for the alternator output
Use the small terminal at the dynamo for the warning lamp connection.

If you are using a Lucas alternator, the two large spade terminals are the output (both are joined internally so it doesn't matter which you use) The small spade terminal beside these two is for the warning lamp.

On the 4000, there is an earth connection from the loom to the dynamo regulator mounting plate - while you're in the area check & make sure its good.

Cheers.

Slidey

Adds Fishtits to the list of handy people to know.

Cheers dude.

Genuineguy

Thanks Fishtits.

I have the alternator in and its working like a charm

FORD 4000

im wondering what terminal on the regulator is the output i.e the 'regulated power'???
thanks

jimmyw

FORD 4000 wrote: »

im wondering what terminal on the regulator is the output i.e the 'regulated power'???
thanks

That terminal in the diagram above is wrong when it states that the F terminal is to the batt, when in fact it goes to the dynamo field (small) terminal as Fishtits mentioned.So the two other B terminals are going to I think, the ignition switch and the battery itself through either the starter solenoid or direct to the battery post.



The only worry I would have is that the old wiring that you are using now OP, is that it would not be strong enough since dynamos normally produce about 22-25 amps, where as Alternators could be anywhere from about 30-60/70 amps.

marlyman

Hi

Why are you doing this conversion? A dynamo is a far better charging unit for a battery than an alternator. Maybe I'm missing something?

Marly

Genuineguy wrote: »

Hi.

I have a ford 4000 tractor in which i want to remove the old Dynamo and Regulator and put in a straight forward Alternator.

Does anyone know what the below Regulator terminals do.






E (-) = Earth

D (ARM) = ??????

WL = ??????

F = Connection for the dash bulb to Alternator

B+ = Battery


The dash light F(F Field Current) has a connection from the regulator to the Old dynamo,

Where is the connection between the regulator and the Dash battery light,

As i will need to use a jumper wire up at the block connector up at the Regulator so i will have a straight connection between Bulb on dash and New alternator.

Does anyone know what the D the WL terminals are about.

Thanks.

John J. Lyons

marlyman wrote: »

Hi

Why are you doing this conversion? A dynamo is a far better charging unit for a battery than an alternator. Maybe I'm missing something?

Marly

An alternator is better for charging than a dynamo , a dynamo is ok if the tractor is used in a regular basis, alternators are cheaper to maintain/replace

jimmyw

marlyman wrote: »

Hi

Why are you doing this conversion? A dynamo is a far better charging unit for a battery than an alternator. Maybe I'm missing something?

Marly

How do you work that out?

Alternators charge batteries quicker than Dynamos.I know most older tractors don't have much accessories so a Dynamo would have an easy job, but still slower to charge though.