alternator... how the hell does it come apart?

[ImpalaSlayer]

im clueless. i took the 3 bolts and the pulley off, and i took off the little box where the plug plugs into. i cant get the 2 halves to separate. has anyone taken one apart before?

[burt ragio]

If all else fails tie a rope to it attach it to the bumper of the car and take it for a ride. Call me if it doesn't come apart.

[ImpalaSlayer]

some how i dont think that will work Burt.

[Joe Walsh]

Dave, I have taken mine apart to have the casing powder coated silver.
It was about 5 years ago, so my memory is very weak.
I believe that there was some kind of internal release clip that required a long thin push rod to be inserted into the case to retract/release the brushes from one half of the casing....:dunno:
I'll check the Service Manual to see if it is written up in there.
Also, IIRC the stator assembly is a very tight - almost a press fit in the front half of the casing.
I had to make sure that NO powdercoating got on the machined inner case...or I'd never gotten it back together!
I apologize for my lame memory...but I took almost everything apart on the engine and I get confused easily in my old age....:o

[ImpalaSlayer]

thanks Joe, i thought i remember you saying there was a clip or something some where but i dont see anything! hmmmm maybe i need better glasses lol

[ImpalaSlayer]

Joe, do you know if you have to access this clip from the front of the alt or the rear?

[bob6364]

Hmmm...I have taken apart several Mustang ones to powder coat and had to use a drift to hammer the armature out from the front...don't use a puller because you will snap the rectifier....

What version is the Marauder alt I wonder....

Here is where you hit it....they are veeeeeeery easy to break....Holy crap is my thumbnail dirty!!!!
http://i159.photobucket.com/albums/t153/bob6364/Mobile%20Uploads/downsized_0105001953.jpg

[FordNut]

4g



87654321

[scruff]

take it to a starter alt rebuilder before you break something

[bob6364]

Maybe he broke it already....

[ImpalaSlayer]

no its not broke lol. just found this online and done see any clip

http://www.fordfuelinjection.com/public/alternator/4G-Diagram.gif

[bob6364]

See my pic above big guy...believe it or not if you get it hot first like 250 degrees F then do this they some times just fall out...not often tho :D

[bob6364]

The only clip is in my .40

[bob6364]

Look picture...up...look up...go up ...see dirty fingernail pic....up...did I mention look up....

[ImpalaSlayer]

Bob, if i hit it where you say in your pic, i will smash a bunch of wires. the mm alt looks way different then that

[bob6364]

http://www.p71interceptor.com/alternator/modelnumbers/8314/8314-6.jpghttp://www.p71interceptor.com/alternator/modelnumbers/8314/8314-2.jpg

[Joe Walsh]

Crap!
Absolutely nothing in the Service Manual about disassembling a 4G alternator.
I really can't remember the details, other than I had it on my workbench, used an impact gun and a strap wrench to break loose the clutched pulley, then I removed the casing bolts and tried to seperate the two casing halves.
The front casing was unpainted aluminum, and the back casing was black cast.

If I had it in my hands, maybe my feeble brain would jolt back to life.

[bob6364]

Yeah I see now...ooh tite little sucka

[bob6364]

Here...b ottom of the page.....
http://www.enginebuildermag.com/Article/2567/fords_4g_alternator__iar_serie s__the_new_4g.aspx

[ImpalaSlayer]

yeah its tight lol.

i was prying between the 2 halves and got a little space but it didnt feel right so i stopped.

[bob6364]

I want my shout box back dammmmmmmmmit!!!!!!

[ImpalaSlayer]

looks like i gotta bake this *****. so i guess its just a press fit

[bob6364]

Looks pretty intense....i hae taken plenty of 3g's apart to powder coat...obviously not a 4g yet...looks scary ;p

[ImpalaSlayer]

well Joe never mentioned desoldering and im sure he would of remembered that. i just wana split the 2 halves so i can polish it.

[Joe Walsh]

If it is just a press fit, I KNOW that I didn't heat/bake it to complete the disassembly.

No soldering/de-soldering or anything that involved!
I would have given up if it was that complicated.

[ImpalaSlayer]

looks like ill beat the crap outa it tomorrow and see what happens lol

[bob6364]

While looking around I found this page...seems to have something for everyone...
http://www.p71interceptor.com/

[FordNut]

looks like ill beat the crap outa it tomorrow and see what happens lol

Air chisel...

[ImpalaSlayer]

Air chisel...

how do you think i got the first alt pulley off before i had the tool!

[Blackened300a]

Sorry Dave, Before I sent you that alternator, I welded up the 2 halves for shipping purposes. :D

[FordNut]

I think I have one in the garage that I split the cases on, I'll look at it tomorrow. It's supposed to get all the way up to freezing tomorrow. Hasn't been out of the 20's for a few days here. brrrr

[ImpalaSlayer]

I think I have one in the garage that I split the cases on, I'll look at it tomorrow. It's supposed to get all the way up to freezing tomorrow. Hasn't been out of the 20's for a few days here. brrrr

thanks Brian, ill get mean with mine tomorrow and see what happens.

thanks to all for the help!

[RacerX]

"Also, IIRC the stator assembly is a very tight - almost a press fit in the front half of the casing." - Joe

That diagram you have Dave says that the Rear Bearing is pressed into the back case and the rotor. If it's a tight fit in the front bearing, there's yer problem. BFH!

[Joe Walsh]

"Also, IIRC the stator assembly is a very tight - almost a press fit in the front half of the casing." - Joe

That diagram you have Dave says that the Rear Bearing is pressed into the back case and the rotor. If it's a tight fit in the front bearing, there's yer problem. BFH!

That might be it....so a firm smack on the front of the rotor shaft with a BFSBH* should do it.
I do remember the rotor/rear bearing/rear casing all staying together as one assembly.

*Big Friggin' Soft Blow Hammer

[scruff]

I think I have one in the garage that I split the cases on, I'll look at it tomorrow. It's supposed to get all the way up to freezing tomorrow. Hasn't been out of the 20's for a few days here. brrrr
you are so lucky it is around -29 here and no sing of warming up for at least another week- happy new year

[FordNut]

Global warming is freezing me... Last summer was the mildest I recall ever having here. This winter is breaking a 50 year old record for consecutive days when the temperature stays below freezing. The high temperature for the past few days has been lower than the normal low temperature.

[FordNut]

I think I have one in the garage that I split the cases on, I'll look at it tomorrow. It's supposed to get all the way up to freezing tomorrow. Hasn't been out of the 20's for a few days here. brrrr

Nope, it's still together. I guess it was just the regulator I took off of it.

[Richy04]

Its not a clip, its a magazine.. LOL

[DTUB]

I'f you try to force them apart you'll pull the feild coil wires right out the back of the rectifier plate. All I did with mine was take a propane torch and slowly heat the case and it pulled apart like butter.

[Black_Kannin]

Ok....Ima baby on the MM alternator knowledge among other things...."powder coat" what is that and why do you/we do it?!?!

[RacerX]

Chemical, heat resistant and really shiny! Esp. good on our aluminum parts because of the oxidation that occurs over time. It can look like a white fungus.

http://en.wikipedia.org/wiki/Powder_coating

[DOOM]

Sledgehammer & crobar. :up: