| Author |
Message |
SGKent 
Samba Member
Joined: October 30, 2007
Posts: 41031
Location: Citrus Heights CA (Near Sacramento)
|
 Posted: Sat Feb 17, 2018 12:33 pm Post subject: Re: 70 amp alternator pulley with fan |
 |
|
| malcolm2 wrote: |
| SGKent wrote: |
| the slip rings are replaceable at an electric shop level, and those were probably pressed on too far - perhaps when the rotor was made. Could be the rear bearing wasn't pressed on properly too. If the alternator was putting out current and not shorting out just remember it is a 40 - 50 year old mass produced car. The front bearing also controls depth so the wrong pulley might change the depth of the rotor. I don't know for sure without taking one apart. |
Just for fun, I am going to add a couple washers to the plate that the brushes are on. THat should move the contact location to the center. Then I will take the alt to the shop and get them to test it. Just for fun.
I do not see how a rebuilder can check or measure where the brushes hit. all that is deep inside and you can't see it or get anything in there to measure. Probably how this one got all screwed up... no quality control. |
does it work or are you being obsessive about the brushes being centered?
_________________
“Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
|
| Back to top |
|
 |
Wildthings
Samba Member
Joined: March 13, 2005
Posts: 50352
|
| Posted: Sat Feb 17, 2018 2:26 pm Post subject: Re: 70 amp alternator pulley with fan |
|
|
| I am going to guess that the thrust bearing is the one directly behind the pulley. Getting the shimming right for the thrust bearing would be the correct way to get the slip rings to line up correctly. |
|
| Back to top |
|
|
malcolm2
Samba Member
Joined: September 28, 2011
Posts: 1272
Location: Mount Juliet, TN
|
| Posted: Fri Feb 23, 2018 12:31 pm Post subject: Re: 70 amp alternator pulley with fan |
|
|
| SGKent wrote: |
does it work or are you being obsessive about the brushes being centered? |
No it does not work. I have a spare alt and I am trying to upgrade to 70 amp but I figured if I could fix this one.....  |
|
| Back to top |
|
|
|
