Daves1940Buick56S Posted September 30, 2012 Share Posted September 30, 2012 Under what circumstances do you all perform the generator repolarization procedure? After a battery disconnect? Or just when R/R the gen and/or regulator? Or ever?Thanks, Dave Link to comment Share on other sites More sharing options...
sleeve-valve Posted October 1, 2012 Share Posted October 1, 2012 I do not polarize the gen after battery disconnect and reconnect. I always disconnect the battery when the car is in the garage (39 Buick) and have never had to polarize. I polarize after replacing a generator, not usually needed after replacing the regulator. If a car is not charging, I'll polarize the generator as part of the diagnosis procedure after checking the gen for output. Link to comment Share on other sites More sharing options...
jvelde Posted October 1, 2012 Share Posted October 1, 2012 I do not polarize the gen after battery disconnect and reconnect. I always disconnect the battery when the car is in the garage (39 Buick) and have never had to polarize. I polarize after replacing a generator, not usually needed after replacing the regulator. If a car is not charging, I'll polarize the generator as part of the diagnosis procedure after checking the gen for output.I am trying to check my generator output since I am showing discharge on ampmeter. Can you tell me how you check yours?Thanks, Link to comment Share on other sites More sharing options...
sleeve-valve Posted October 1, 2012 Share Posted October 1, 2012 I am trying to check my generator output since I am showing discharge on ampmeter. Can you tell me how you check yours?Thanks,The shop manual has more details and specs, but basically to test the output of the generator on the 39 buick, hook up a jumper wire between the Field terminal on the regulator (which comes from Field on generator) and ground. This stops the regulator from functioning. Then connect a voltmeter between the Gen contact on the regulator (which comes from the armiture on the gen) and a ground and run the engine. If the gen is putting out, it should show on the voltmeter. Link to comment Share on other sites More sharing options...
jvelde Posted October 2, 2012 Share Posted October 2, 2012 Sleeve-valve: thanks, I had tried the shop manual check and wasn't getting any output and wanted to make sure I was doing the check correctly. Didn't get anything by grounding the Field terminal on generator and putting voltmeter off the Armature terminal, so I took it to be tested/rebuilt today. Also took them the voltage regulator to check. Thanks again. Link to comment Share on other sites More sharing options...
Daves1940Buick56S Posted October 2, 2012 Author Share Posted October 2, 2012 Sleeve-valve: OK, thanks for the advice. It is along the lines of what I was thinking, since I had disconnected the battery and reconnected numerous times and had not seen a problem with the generator output when doing so.Cheers, Dave Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now