Anybody have pics of what wires go where on the generator/alt. wire 468 is obvious but which post under the cover does #5 and ground go to?
Printable View
Anybody have pics of what wires go where on the generator/alt. wire 468 is obvious but which post under the cover does #5 and ground go to?
The stock alt has 3 wires total...
Under the cover:
1 large wire, #5, which is hooked to a stud under the cover with a nut, emerges from the alternator and runs to the foot starter switch and attaches to the same post the positive wire from the battery connects to.
1 small wire, 468 or 568, emerges and runs just past the cover and ends in a waterproof connector...the other side of the waterproof connector runs into the cab to a splice that slpits the wire into 2 outputs. One of these is wire #27 and plugs into the on/off switch and the other wire, also numbered as #27, feeds the spider harness which is the power to the gauges.
The ground wire hooks from the upper mount arm of the alternator, the one with the adjuster slide, on a bolt and nut, and connects to the alternator case with a bolt...near the cover on mine though there are a couple versions and this may vary slightly.
Are you saying your has 2 posts under the cover for the larger wires? Who is the manufacturer of yours? Leece Neville, Prestolite, Ford, other?
yes , there are two studs under the cover one has a nut on it the other does not. is a prestolite I think but will have to run home and check? thanks for the info
Boyce Equi[pment sent me one recently I hooked up the 468 wire but was looking at belt alignment , decided to start it to see how my belts were aligned and the alt / gen started smoking. dont know if it was bad or because the ground and #5 wire was not attached. they sent me a new one so I did not want repeat what happened?
It seems there would be a + by the one for #5 or a G or GRD or - by the other...maybe not...
I will have to see if there is a Prestolite in my stock...
yeah I looked for that but did not see anything. but any info would be great
I have a Prestolite NOS...sounds different that yours though...
Under the cover, a couple of small wires converge and become the 468/568 wire...there is 1 stud with a nut.
Outside the cover just to the outside edge of the cover as the alternator is mounted in the truck, is a threaded hole going down about 1/3 inch or so.
I also have another that I think is a Motorcraft/Ford type...it has the same wires under the cover, basically single stud...next to the rear of the cover on the inside edge of the cover as it is mounted in the truck is one bolt, oh about 1/2 inch head, that is the ground mounting location.
Both of these have the ground mountig just outside the cover...if that helps...I guess not though by the 2 studs you mentioned...
yes , one had a bolt just outside the cover. was assuming the ground. inside the cover there are two studs one on either side of the 468/568 wire. one has a nut on it and the other does not and the trheads on it look boogered up. do you suppose the one with the nut would be safe to assume is for #5 wire?
Mine has the stud for #5 toward the threaded hole side of the small 468/568 wire...if thats where yours is, I would go for it.
I will try to post a pic of whats under the cover of mine...might help ya...
yes it is. thanks!
Kind of OT, but is there a difference between an alternator and a generator? Or is it just two words that mean the same thing in this case.
Zach
It is an alternator if it is stock to an M715. Some of the units themselves even say generator and its so written in places in the manuals but they are alternators in this series of trucks.
I think....my opinion only....that since generators were the thing that had been around forever and alternators were fairly new, the terms got confused.
Here is my Prestolite:
Overal view:
http://www.m715zone.com/jonmisc/prest_alt1.jpg
Close up under the wire cover area:
http://www.m715zone.com/jonmisc/prest_alt2.jpg
If you look at the large OD flat head screw at the top of the pic, just to the left of that it says:
VOLTS
NCR
Not sure what that means.
Here is a shot of the Leece Neville unit in my truck...reason I am posting this is to show where the ground wire mounts to the alternator mount bracket:
http://www.m715zone.com/jonmisc/leece_alt.jpg
Oh, you can see the ground wire mount on the Prestolite unit just below the wire cover in the first pic and a little below the stud with the nut in the 2nd.
Thanks brute4c. got it running today seems to be working properly. where the epoxy is on yours is about where my second stud is. thanks again for all your help!
by the way only one belt seems to line up worth a crap, any suggestions. alt has 3 grooves water and crank have 4.
2 wires in and 1 coming out...a stud underneath...wonder if I cleaned theat stuff out if I would find all the wires hooked to that stud as the connector...
Glad you got it running!!
Hmmm...on the not lined up part...you are sure the pulley is tight on the shaft? If it is fully seated, is the alternators front top ear mounted in front of the slide adjustment bar? I think it wont fit the other way but what the heck...
Might be able to space the upper and lower mount ears forward with a washer or 2....well maybe not...I think the way the lower mounts are, it wont go forward...
It will work on 1 belt...better to have 2 though...
Yep pulley is seated. fits pretty tight inlower mounts dont think I can space.
Yeah, looking at the diagram, I see that its not gonna go forward...yikes...not sure what you can do...
Is the upper mount bent some maybe?
How far off is it? Could it be a wrong pulley that wont match up well no matter what?
dont know much about the pulley. came from boyce equipment and they said it was specific to the M715. unless the crank pulley was changed. guess I will check more tonight.
Generator...Altinator... what is correct?
Generator gives you a direct current.
Am altinator also, however before the diodes it is a three phase altinating current. Thats why altinator.
In Germany we do not have to care for the difference, it is simply called "Lichtmaschine" (lighting machine) which means someting to produce electric energy. May be it is technically not correct (for it mainly charges the battery), however it awoids missunderstanding...
And as seen on the pics even the manufacturer calls it generator, but it is an altinator.
So do not care for how you call it as long as anybody understands what you mean!
Wolf from Germany