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View Full Version : Any tricks to dismantling alternator?



ChrisD
01-13-2011, 09:33 PM
Thinking about taking mine apart to polish the casing. Anyone done this before? Fairly straight forward?

KM
01-13-2011, 10:31 PM
Yeah, you just remove the bolts that hold it together, and remove the pulley, and the casing just slides apart. There's usually a trick to get it back together, but if you look at the case, it's pretty easy to figure out.

I used to make some cash taking alternators and other stuff apart for powercoating.

Galcobar
01-13-2011, 10:38 PM
http://www.celicatech.com/forums/showthread.php?12646-Is-my-alternator-going-out

Facime
01-13-2011, 10:56 PM
The hardest part is getting the pully off the shaft, after that its very straight forward. Since you have it apart pick up a new set of brushes.

ChrisD
01-14-2011, 03:47 AM
Thanks for the tips guys! Shouldn't be so bad then. Will keep ya posted.

The Captain
01-14-2011, 03:54 AM
Definitely would like a tutorial on this. I'd like to powder coat mine black. Pics!!!!

Night_Wolf
01-14-2011, 05:21 AM
Its easy to get the pulley off, I just pulled it off using an electric impact gun and it was off in an instant.

ChrisD
01-14-2011, 05:30 AM
Sure I could do some pics on this for sure. I think the tricky thing with the pulley is that it will spin when you try to loosen the bolt. I'll figure something out I'm sure. I might see if I can play with it tomorrow.

CriScO
01-14-2011, 09:43 AM
Impact is a godsent for the pulleys. There's a lot of old domestics that use the same alternator with different sized/single belt/double belt pulleys, etc. I have to swap them all the time at work. Even with an electric impact and holding the pulley by hand it comes right off. I wouldn't even bother with another way myself.

ChrisD
01-14-2011, 04:38 PM
Alrighty then, I'll fire up the air compressor. :D

ChrisD
01-15-2011, 04:09 AM
OK, help me out a bit. There's a small 10mm nut sitting atop a large 22mm nut. Tried hitting the 22 with impact and held the pulley by hand but didn't break / it would just spin. It is cold as balls outside so I didn't stick it out long to try to understand it. I checked the BGB on this and it involved 3 separate SST's, with a picture that made little sense while I froze in my garage.

If I can't figure something else out I'll probably hold the pulley in a vice and then hit it with the impact again.

Facime
01-15-2011, 05:24 AM
old belt around pully (for padding and grip), clamp in vice, impact. Best I can offer without seeing it.

ChrisD
01-15-2011, 08:10 PM
Compressor took a crap on me. Blah. Probably frozen. Oh well, used a vice and a breaker bar, got it. Pulley got knicked a bit, but should be ok.

ChrisD
01-15-2011, 08:36 PM
hmm. Trying to get the coil out. It seems pretty well set in there. Anyone pulled this before?

Facime
01-15-2011, 09:07 PM
been a while...

Isnt the bearing on the back end a press fit? I seem to recall the shaft and bearing come out together (so you have to tap or press out the bearing). Im sorry I dont have one handy to look at.

ChrisD
01-15-2011, 09:16 PM
No I mean the coil of wires attached to the other half that line the outer edge of the inside. Got the main unit out with a puller tool.

Facime
01-15-2011, 11:28 PM
Ive never pulled the stator out of a case.

ChrisD
01-16-2011, 01:31 AM
Yeah it looks like the BGB calls for the entire stator and housing to be replaced as a unit if bad. On some alt's it will pop right out though. Oh well. Might cause an issue if you were powdercoating, but for me just polishing should be fine. I'll just hit it with some air before reassembly.

Facime
01-16-2011, 01:40 AM
yeah thats all well coated wiring so it should be safe to polish the body and then just use soap and water and air to clean up after.

The Captain
01-16-2011, 09:10 PM
been a while...

Isnt the bearing on the back end a press fit? I seem to recall the shaft and bearing come out together (so you have to tap or press out the bearing).

Yep

ChrisD
01-17-2011, 06:08 PM
Definitely would like a tutorial on this. I'd like to powder coat mine black. Pics!!!!

http://www.celicatech.com/forums/showthread.php?51460-How-To-Disassemble-the-Alternator-amp-Polish

The Captain
01-18-2011, 01:16 AM
WIN! Thanks!