marine alternator and regulator

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joehauge
Oregon
Posts - 1
marine alternator and regulator

Hi,

I working with a 90 amp marine alternator 8MR2069TA (sales no 110-602) with a regulator built onto it... regulator 8RG2043. Exact markings on regulator's plate follow:
Leece-Neville
MODEL 8RG2043 C
Amps 5 VOLTS 12 200303
SALES NO. 105-280

I was able to find the alternator on the website, but no info on the regulator. Specifically I need information on how this regulator is set to engage the alternator...i.e. is it a cut in and run at 90 amps at a certain battery voltage reading and cut out when a different set battery voltage is reached? or is it set to taper the charge over a range? It would be helpful to get information, specs, installation instructions and/or any other info you can provide on the regulator. Also very interested in information and instructions for the "voltage adjust" the small white adjusting screw on the back bottom of the regulator.

Many Thanks! Joe

DarylF
Prestolite Electric
Arcade, NY USA
Posts - 1204

Joe,

 

This regulator operates at one voltage 14.4V and has a flat temperature compensation.  This means as the temperature changes the voltage will remain at 14.4V.  This regulator is not a 3 step such as a Balmar regulator.  The voltage adjustment gives you the option to adjust the voltage but the voltage will remain at this setting until the regulator is manually adjusted.

 

We don't have detailed spec to send you but I can send this to you via email.

 

 

robert
Not registered

I also have an internal regulator on a 2ea x A0014729LC alternators.
Is this a 3 stage or simple taper charge?

How to convert to a external 3 stage from either Balmer or Ample Power?

Can it be wired so that one can switch from the internal to external regulator?

DarylF
Prestolite Electric
Arcade, NY USA
Posts - 1204

The regulator is a simple design that operates at one voltage.

 

We make a remote regulator cover that replaces the existing regulator and gives you acess to both sides of the field.  The part number for this cover is 100-265S.  Once this cover is installed you can then use a Balmar regulator.

 

No, it cannot be wired to be switched from one to the other regulator.

 

Good day.

Robert Straghan
Not registered

1. This mod needs to be done in Hong Kong. Is there a technical note available or complete instructions in the kit?

Do LN make an alternator with a internal 3 stage regulator and temp sensor? My John Deere engine supplier seems to think that that is what these 4729LC alternators have?

Where to buy these kits either in Hong Kong or Vancouver Canada

2. Is there a field rebuild kit for these alternators?
I purchased LN due to their reputation of reliability, however this is something that blue water boats need to carry. If so, please advise part number.

thanks
Robert

DarylF
Prestolite Electric
Arcade, NY USA
Posts - 1204

Robert,

 

No instructions comes with this cover.

That is someting we will create because we get a lot of questions on.

 

The procedure at the link below will give you information on how to remove the regulator. When you remove the original regulator you will see a red and black wire attached to the regulator. These wires do not get used so you will need to insulate them so they do not short out. If you use a Balmar regulator they will have wiring diagram to connect there regulator with this alternator.

 

See TSB-1045_102200_regulator_installation.pdf 

 

 

We do not offer a 3 step internal regulator.

 

No field rebuild kit exist for this alternator.

 

We have a distributor in Vancouver and below you will find there contact information.

 

BRIGHOUSE AUTO ELEC. SVC LTD.
1-2651 NO. 3 ROAD
RICHMOND, BC V6X 2B2

Phone: 604-273-4904
Fax: 604-273-9119

 

Hope this helps

 

 

Robert Straghan
Not registered

I am crusing the world and using 2 model 4729LC alternators on my John Deere main engine. Given remote locations I need to be self sufficent and need a service and wiring manual on these regulators.

Do you have such a publication

Robert

DarylF
Prestolite Electric
Arcade, NY USA
Posts - 1204

We are currently working on the parts breakdown for this alternator and will be posted to our web site shortly.

 

As for a service manual, nothing exist.

 

Good day

Corbett Platt
Not registered

are there rebuild parts for these models? Diodes, regulators, bearings etc? Is there a brush holder that does not have a regulator, in order to convert it to external regulation?

Thank You,

Corbett

DarylF
Prestolite Electric
Arcade, NY USA
Posts - 1204

No service parts are available for these alternators.

 

We have a version of the AVI 128 that we sell to Balmar that is design to use a remote regulator.

 

Please contact them and you should be able to obtain one from them.

 

http://www.balmar.net/

 

Good day

Bob Page
Not registered

Do you have a rpm output curve and mounting dimensions and other specs for this 140 anp alternator? Is it still made? There is one on my Lugger 984D marine engine installed in Jan 06 and I would like to use the same model mounted to a pully on the prop shaft for charging when under sail.
Thank you
Bob Page

gaey starr
Not registered

I have a Prestolite alternator ALK 6204 AY on a 1968 Holman Moody Marine Ford 302.The top mounting lug has developed a crack.What are my options?Being an old model is a new front casting available? Is there a direct replacement external regulator alternator or will I need to convert to an internal? Thank you Gary Starr

Paula Parry
Arcade, NY
Posts - 258

Gary,

This alternator has been replaced by the 8MR2051FA which has an Internal regulator. you can find informaton on our website

 

Best regards

Jim Melanson
Not registered

I have one port and starboard in my 1959 Owens Flagship 29 (283 cid)
I can not figure out the white wire from each alternator. they were connected to the underside of the throttle shift controls. There are voltage regs for each port and starboard.

Is there a wiring diagram anywhere??
thx

DarylF
Prestolite Electric
Arcade, NY USA
Posts - 1204

Jim,

 

I could find no information on this alternator.

 

Sorry,

 

Daryl

 

David N
Not registered

I have a pair for my twin ford 302 175's. 5.0 ltr
I am looking to replace this with a higher amp. I don't have any other information on this alternator and would like some one to help me on information. thanks.

DarylF
Prestolite Electric
Arcade, NY USA
Posts - 1204

David,

 

We stopped making this alternator in the early 90's so very little information exists.

 

Please look at the attached brochure to see if you can find a match.

 

Sorry I wasn't able to help you any further.

 

Good day,

 

Daryl

 

AttachmentSize
PP1128_marine.pdf 237.91 KB
Mark Knaus
Not registered

Gentleman.
I'm looking for the alternator bracket Model Prestolite 90-784 as mentioned on the "The 12 volt Doctor's practical handbook" on page 163 of the 1983 edition. Do you still carry this part?
Sincerely,
Mark Knaus
135 Park Street
Westfield, NJ 07090
(908)230-2628

DarylF
Prestolite Electric
Arcade, NY USA
Posts - 1204

Mark,

 

Sorry, but it is no longer available.

 

Good day,

 

Daryl

osirissail
Not registered

We have a 2 engine installation using LN 8MR2035T alternators with 8RG2019 case-mounted regulators.
Once the 8R2019 regulator is removed the alternator has only two visible pins attached to the brushes to the rotor. One is attached to a brush and the alternator case (ground) and the other pin only to the brush on the rotor.
- - Can this alternator be wired to an external Balmar regulator using these field pins? How?
- - Is there a specific mod tech notes for this conversion? I found TSB1112 and TSB1116 for conversion to an external regulator. If not can the 8MR2035T be modified following the guidelines in the TSB's above?
- - Is there a specific "cover part" for the 8MR2035T like these other model alternators? What is the part number and where can I get two?

DarylF
Prestolite Electric
Arcade, NY USA
Posts - 1204

Yes, converting this model to remote regulation is possible.

 

You can use TSB-1116 and remote regulator cover K185103982S to accomplish this task.

 

To purchase this cover, please contact a Prestolite distributor and they will be able to get one for you.

 

Use our web site at the link below to locate your nearest distributor.

http://www.prestolite.com/pgs_buy/distributor_listing.php

i have this device that is situated between a wire that comes from the ampre meter to alternator ans not sure what it is for.
it is a black cylender shape thing with a conection at each end and a small wire coming out of one of the ends,anyone know what this is?

James
None --- retired
Posts - 1

I would like to convert the above Leece Neville alternator so that it will work with an external Link 2000R regulator on my boat.  Is there a remote regulator cover available that will work on my alternator?

Many thanks,

James

Paula Parry
Arcade, NY
Posts - 258

James,

You will need 100265S field plate to convert the alternator

 

Best regards

Big Man
Not registered

I have a Prestolite ALK 6222Y Alternator on my !977 Thunderbird Signa 18. I know it has a Ford 302. Ifat all possible I need to know what is comparable to this alternator. I looked on the chart but I could not find this particular alternator. Could you please help??

roberto1430
Posts - 1

I have a 8LHA2070VB alternator. What is the part number for the regulator cover for external regulation.

Thanks

shorty nevins
Not registered

Hi, i am wiring a boat and i need a basic wiring diagram for a hitashi alternator through a 2 pin regulator so i can wire it up.
thankyou

mcm
Not registered

I have an 8rg3030 installed in a 24v system charging an AGM battery in higher ambient temperatures than uasual (100 deg). Id like to dial the alternator down to a lower output voltage. Its output is 28v 5a currently. Id like to drop it to 25. Is this possible via the white adjustment pot on the rear of the regulator? If so what procedure shall I use?

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