Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Topic: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla (Read 1806 times) previous topic - next topic

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #25 – December 29, 2019, 01:43:08 pm

The diagram in the link below appears to be similar to the photo of the back side of your mystery alternator. However, I would NOT assume it is the correct diagram unless the model number matches the one you have installed.

But just for the sake of discussion, you can see that the 2700JB model does not require external excitation and does not support remote sense. The 2700JB only requires 2 wires: the large positive and negative cables that connect to the large terminals.

Prestolite - Leece Neville

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #26 – December 29, 2019, 02:42:28 pm

Here is photo with the type and model no. , Ive tried searching for this model but with no success

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #27 – December 29, 2019, 02:44:52 pm

That photo shows the voltage regulator part number. The alternator body should have a separate model number stamped or marked somewhere.

Like in the photo below. Regulator has one number - the alternator has a different number.

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #28 – December 29, 2019, 02:56:09 pm

Ok ,I will have to look at it tommorrow for the alternator no. , So basically then it does have its own internal voltage regulater, so theoretically when it is running the voltage regulator will decide how mutch voltage to give to the batteries depending on the state of charge , less charge more voltage , fully charged batteries less voltage being produced , I've worked out how to excite the alternator, so as I said previously I can excite the wire using a return spring switch, that's all it needs just to brush over one of the terminals and it starts producing power, IL still keep searching for correct diagram though , thanks all for all your help

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #29 – December 29, 2019, 02:59:06 pm

NO.

That regulator will supply constant voltage. Amps will vary depending on battery state of charge.

And, that constant voltage is reduced by .7 VDC as it goes through the diode-based battery isolator. That power is turned into HEAT-- hence the fins on the isolator to dissipate heat. Because of this, the "correct" alternator will have an external sense wire from the chassis battery side of the isolator. Basically, it tells the alternator to put out .7 EXTRA volts when are then lost in the isolator.

All of us are saying the same thing-- do not guess on how to wire your new, non OE wired alternator. Confirm and wire it that way!!!!

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #30 – December 29, 2019, 03:39:04 pm

just seen the alternator you posted chuck, thanks that does look remarkably light the back of my new one, those two terminals below the terminal with wire connected, are actually producing 7volts on each one, and those are the terminals I have to brush the ign wire over, just the slightest of touches that's all that's needed to power up the alternator, im not gonna throw my old alternator away, I think il get it serviced and keep it for spare.

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #31 – December 29, 2019, 03:54:48 pm

I would take the regulator off of the old alternator and check the brushes to see if maybe one might be stuck and if it is clean it up and reassemble it. The Leece Neville is a pretty tough unit.

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #32 – December 29, 2019, 04:24:37 pm

Some "self excited" alternators require seeing a certain RPM before they start doing their thing. Next time you fire up the engine, try bringing the idle RPM up a little (800-900 RPM) and see if the alternator starts putting out voltage.

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #33 – December 29, 2019, 04:43:47 pm

Amazon.com: New Regulator JB.12V HD - TRANSPO - L79000HD: Automotive
Here is a link for that regulator
JohnH

As an Amazon Associate Foretravel Owners' Forum earns from qualifying purchases.

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #34 – December 29, 2019, 05:07:02 pm

Just had a look at that link , on my new alternator there is a packet with a small yellow wire two red ends saying trio , but then there is a red warning on the packet saying the regulator on this alternater has not been fitted with trio , why supply the wire in the first place then , strange

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #35 – December 29, 2019, 05:11:16 pm

Quote from: Chuck & Jeannie – December 29, 2019, 04:24:37 pm

Some "self excited" alternators require seeing a certain RPM before they start doing their thing. Next time you fire up the engine, try bringing the idle RPM up a little (800-900 RPM) and see if the alternator starts putting out voltage.

Quote from: Chuck & Jeannie – December 29, 2019, 04:24:37 pm

Some "self excited" alternators require seeing a certain RPM before they start doing their thing. Next time you fire up the engine, try bringing the idle RPM up a little (800-900 RPM) and see if the alternator starts putting out voltage.

Yes I've already tried that , but didn't work , I gave it a good rev for about 20 secs, and nothing, I know what you mean though because my car when ever I start it up and leave it on tick over , no voltage , I give a quick burst on the accelerator and it starts charging

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #36 – December 30, 2019, 04:53:07 pm

Hya , I've determined what alternator I have , I went onto Riverside alternators and starter website , and found a picture of my aftermarket alternator , it appears my alternator is a Wilson 90047051 , I've tried alsorts of ways keyed in different words , but am unable to get Any wiring diagram for this make of alternator or any fitting instructions , so it still leaves me wondering where to connect the duvac wire and the ign wire , what I cannot understand if it's a Reece neville aftermarket product why do they make them different than original spec , has anyone heard of this make of alternator and possibly know of just one website that would give me wiring directions for all makes of alternator thanks kev

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #37 – December 30, 2019, 05:03:27 pm

Adobe Document Cloud

Wilson 90047051 alternator instructions - Google Search

Hopefully between these 2. You will get an answer. Vr Mark

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #38 – December 30, 2019, 05:03:54 pm

As we have already posted, you may (or more likely may NOT) use those wires. Said another way going from a DUVAC alternator to another style, do not assume they will be wired the same.

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #39 – December 30, 2019, 06:47:09 pm

The Wilson web site says that 90-04-7051 is a 24 volt alternator that puts out 90 amps (at 24 volts?). I don't understand how you would end up with that alternator, but I would question it's suitability for this application.

Most of Foretravel coaches come from the factory with alternators putting out 130-160 amps at 12 volts. Many of us have upgraded to a bigger alternator (200-240 amp) to better handle the load of large battery banks.

You need to check with the supplier and confirm the actual voltage and amp rating of the actual alternator that you have.

Wilson - E-Catalog (enter 90-04-7051 in the search box)

https://www.oreillyauto.com/detail/b/wilson-5289/charging---starting-16772/alternator-11425/f7cab2ae3cc0/wilson-90-amp-alternator-remanufactured/90047051/4827478

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #40 – December 31, 2019, 03:27:07 am

Yeah your probably right , I didn't realise this , the alternator is definately 12 volt so that isn't the no. I've found I've been up and checked the alternator and I can't see a number on it , so when I went onto Wilson website , I just presumed that's what it could be because I just found a photo that looked identical , so what I have done is contacted Riverside alternators , and asked them to give me all the details about this alternator including part no. , When I ordered it IL be honest I didn't realise that this was an aftermarket product , I gave them the no of my original leece Neville alternator and they sent me the one I've got now , so for now IL wait until they contact me and go from there , meanwhile , a happy new year to you all from over the water and thanks for all your kindness in helping me with various different problems that I've had , especially to chuck and Jennie , wolf and nighthawk and anyone else that's tried to help me , my new parking brake chamber arrived last week and that is now fitted and up and running perfectly, I was supplied this part by anything truck .com a chap called Todd was very helpful , received it within 7 days from ordering , cheers all kev

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #41 – December 31, 2019, 08:58:12 am

Yer Welcome - we try to help all we can, but it is sometimes difficult diagnosing problems at long distance. That's why we keep pestering new owners for photos when they have problems. It is a great help to see the item in question when trying to solve a puzzle. Keep plugging away and you'll get the alternator figured out.

While you wait on the alternator info, if you feel like it, I would be interested in hearing what its like driving a Foretravel in Britain. I assume your coach is still left hand drive? We have a few Forum members in Australia. They are required to have their coaches converted to right hand drive, which as you can imagine is a major project. So what is it like driving the coach where you are? I have driven on the Continent (in France) and I remember the secondary roads in the towns were very narrow and congested, even when just driving "normal" sized cars and vans. Do you have the same problem with narrow roadways in Britain?

Our members have all kinds of parking situations here. Some are lucky (like me) and can park their coach in their driveway or (even better) in a coach barn at their house. Some have to store their coach in a commercial parking facility. How about you - where do you keep your coach when not using it?

How about the fuel situation. Are the fuel stops any problem, or do you (like most of us) tend to use the same fuel stations as the big commercial trucks? What are you paying for diesel?

What about registration and taxes? In some states in the USA personal property taxes on a motorhome can be a real burden. How does that work where you are? Do you need a special operators license to drive a motorhome?

We'd love to see some photos of your coach, and your neighborhood, and any parks or places you go to camp.

Happy New Year back at you!

PS: In my "signature" I have added some info about my coach (look down below this paragraph). You can do this as well. It helps when you ask questions on the Forum if we can easily see what coach and equipment you have. Go to your profile page. Under the "Modify Profile" tab, click on "Forum Profile". On that page, next to "Signature" there is a box where you can add whatever info you wish. When you are done filling in the box, scroll to the bottom of the page and click on "Change Profile". Then go to any old post you have made in any thread, and see what it looks like. You can always go back and edit the info at any time.

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #42 – December 31, 2019, 05:34:59 pm

hya chuck ,had a reply back from Riverside alternatiors the part no. They supplied me is 55700cx , it's only 110 amp though , but it seems to be putting plenty of power, even when I have all of the lights house lights and night heater on , not that mutch voltage drop either , had it running for 3 hrs earlier, batteries plenty of charge now , all 5 in total battery banks , I've just uploaded photo of this part as you can see the terminal for 12 volt activation wire or excite wire it's the same, it has got it's own voltage regulator , so I haven't got to worry about over charging, to be safe I'm gonna get my old leece Neville repaired and keep as a spare , it probably won't be fully ready for the road till end of 2020, as I'm a continental lorry driver , so may be away for 3 or 4 weeks at a time then usually home for a week or two , so weather permitting I'm up there every chance I get , the Mrs said the other day are you sure there ain't another woman in my life , I said Christ 1 is enough , my grandvilla is the only other woman in my life , ha ha , I've owned it for over 9 years , and then I lived in it for a while when on my own , then I met my woman and I left it go for a while , anyway about 3 years ago I bought another 8.2ltr from adelmans truck spares ,if you go onto Google and key in Detroit 8.2ltr 1st start up for 3 years , you can see the engine running. it's actually been fitted back in motorhome now for 14 months , I started it on a pallet first , being second hand was a bit of a risk I know but it was absolutely fine , sounds lovely , anyway since then I've , fitted new front shocks , got the rears still to fit ,new master cylinder , gone on , just finished the hardest job changing virtually all of transmision hoses , pump to power steering , to hydroboost and back to relay valve , all pipes from there back to reservoir , new parking brake chamber all fitted and working last week , and all hoses to cab switch for brake , there were alot of pipes that I couldn't get at without dropping the water and waste tanks , so it was easier to cut each pipe either side of the tanks , and have re routed everything and left the old ones where they were , I had to do one pipe at a time cut it , then go to front and cut one of other pipes , and used compressed air through pipes to determine if I had the right one , then would mark them and take photos , the old pipes were made of steel and hoses as I'm sure you know , but I've got rid of all steel and have got all Flexi hose everywhere it was more expensive doing it that way but was a hell of alot quicker, next job fit the new rear shocks ,prop shaft ,I've replaced all new brake pipes all round , just got two more small ones from rear axle ,to rear brakes either side and new calipers front and rear to go on but that will be more or less the last job I do before I take it for MOT test , I don't really want to fit all new brakes for it to be left standing for maybe another 12 months , so am concentrating on everything else first, I've even cleaned up all steel parts and chassis with wire brush on angle grinder and then sprayed it with hammerite waxoil ,I've used gallons of it , but it's well worth it , it's absolutely brilliant stuff , repells moisture excellent, I've even took photos of what the front chassis and springs look like now it's been cleaned and sprayed looks like new , I'm actually getting quite excited about getting back on the road again, I took it to Spain for a month when I first had it, no problems whatsoever , I wouldn't never have anything other than a foretravel again , I've got alot of interior work to do, mainly cleaning cause it's been full of tools everywhere for a long time, but the dirtiest of the work now has been done , my brother is a carpet fitter and he's got all new thick piled carpet and underlay to fit for me when I'm ready but obviously that will be the very last job ,

As for question about the roads over here , well I live in a place called newlyn Penzance in Cornwall , right by the sea overlooking newlyn harbour and st Michaels mount in the distance, and IL be honest I could not park my RV outside the house , all of the main roads are wide enough, and mine is parked a few miles away at a place called grumbla , Google map it and youl see what I mean , there are one or two roads that I wouldn't dream of taking it ,but in general most smaller roads do have passing points , and there are alot of farms with big tractors and trailers , just have to be a bit carefull that's all, as for parking , yeah you have to think a bit where you go but IL always find somewhere , and cost wise , absolutely nothing at the moment cause it's not on the road , I pay £10.00 a week to park it at this place in grumbla ,he's a car scrap dealer , he's ever so good ,I can use his workshop whenever I want and go up there whenever I want to work on it , , but when I'm ready fuel at mo diesel is £1.25 per ltr that's about £6.25 per gallon, insurance will probably be around 5 to £600.00 per year , road tax believe it or not is £165.00 per year , it's actually cheaper to tax than my own car, it's classes as a private HGV, the same as a showman's tax rate , it's over 10 ton actually anything over 7.5ton so you need at least a class two category hgv to drive it , well I have a class one anyway so not a problem for me , however there are alot of people who believe that they can just drive one on their car licence , they just say I'm alright it's legal because it's a motorhome , if it's classed as an hgv you need a hgv to drive it , the thing is alot of American motorhomes are petrol engines ,they can be the same length as mine , and they can be so mutch lighter , like under 7.5ton and yes the average car driver can legally drive one , but personally I think , the way they categorize vehicles is wrong , they should do it on size not weight, , even the smallest of motorhomes and there are alot of really tiny motorhomes over here , but you should see some of them reverse , oh my god they shouldn't be on the road , and if they had to take a test ,there would be a very low pass rate , anyway is it cold where you live , nitehawk sent me some photos of where he lives says it was -18° last week , where I live the whole country could have snow , but vary rare we get it here , it's quite mild in the winter here , seems to be getting warmer every year . Christ it seems like Ive been writing this for ages , I started writing ages ago , then the phone rang and I don't know what happened , for some reason I came off the sight and when I went back to it , I'd lost what I'd written , I thought maybe it may have gone into a draft or something , but couldn't find it , is there away of retrieving unsent messages ?

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #43 – December 31, 2019, 07:10:39 pm

Glad to hear you finally got some good info on the alternator. If it is working and doing what you need, then OK - time to move on to other projects.

Thanks for the info on what it's like owning/driving your motorhome in Britain. Very interesting hearing about overseas owners.

I live in the western part of Texas. Our weather is fairly mild in the winter, and very hot in the summer. Seldom snows here, but we do get below freezing temps pretty often this time of year.

About drafts of your posts. They are automatically saved at some regular interval by the Forum software. If you lose your place or can't find a post you are working on, just open another new "post reply" window. Scroll down below the box where you enter your text and you should see a line that says "saved drafts" or something like that. OR, you can go to your profile page and click on the "show drafts" button. You can usually recover most if not all of the post you were working on.

I guess you have already seen New Year's by now, so have a good 2020!

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #44 – December 31, 2019, 07:59:52 pm

Kev. We are coming to England next September for 5weeks and will be all around Cornwall at the start of the hols. I was born in Liverpool and lived there till 23 love St Ives and area and a friend is coming with us and he owns a 94 gv 240. Would be good to see you if you are not driving lorry.
I have family still in N Wales and Lancs so come across every year just about.
Happy New Year
JohnH

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #45 – December 31, 2019, 08:21:47 pm

Yeah keep in touch mate , hopefully by the end of the year , I might have mine all back on the road ,

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #46 – December 31, 2019, 08:28:09 pm

Yeah our new year was nearly 1 and half hrs ago , I think we are 6 hrs in front of you , well happy new year to all anyway , off to bed now , thanks for everything

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #47 – January 02, 2020, 08:08:35 am

Well ,I've started taking alternator apart, I've got the regulator off it and opened it up , is it easy enough to get hold of a new regulator , one of the brushes in the motor is definately stuck , if I buy a new regulator , will it come complete with new brushes , I think I may have blown the regulator when connected it up wrong ages ago, also the copper coil wires and armature ,is there an easy way to check it out with a continuity test?

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #48 – January 02, 2020, 10:14:43 am

here is pic of my alternator inside , can the surface rust be be cleaned with very fine sandpaper, and do the copper coil windings seem to be in order, but will need to get it tested ?

Re: Leece-Neville alternator on my 8.2ltr detroit, 1990 foretravel granvilla

Reply #49 – January 02, 2020, 10:35:45 am

I keep getting same message ,error loading attachments , file could not be uploaded , perhaps there is a limit of how many I can send , maybe if I delete some of the previous attachments it may work , but then if I delete them will they get deleted everywhere ?

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