could be, I'm no expert. I was working at Hensley Battery in Denver. They got starters and alternators from junkyards in 55 gallon drums. I tore them down and washed them. One of the old guys in the assembly room told me about the bearing thing. I tried it and the bearing in my '66 was magnetic. It could have been defective, but it ran another 20,000 miles and never failed. I know grounding through bearings is bad juju.
I'm the "pseudo" expert and shaft circulating currents are real (having been directly involved in rebuilding motor's from fractional hp to 10,000 hp)....it depends on bearing assembly's diameter, RPM of the shaft, the bearings isolation from the case and rotor's magnetic field windings intensify (proportional to rotor's field current).....in this case its only 5-6 amps max....but it still exists........Aaahhh..the re-builder's dream......55 gallon drums of junk (core) parts......did you inspect the shaft bearing area for "brinilling" or shaft degradation due to shaft circulating currents at the bearing interface ???.....likely not....bearings are cheap.....just install new bearings.....just my opinion of course....
HOW SAD....The "chemical" you referred to was either: 1,1,1 trichloroethylene (Perc), or a polychlorinated biphenyl (PCB).....both are extremely carcinogenic chemicals and can enter the body thru diffusion or in the vapor state......HOW COULD YOU BELIEVE THAT THESE CHEMICALS COULD DO NO HARM? Except you got free burritos made by a little Mexician lady ......what a trade off....have you not heard of MSDS's.....Material Safety Data Sheets?....where all compounds used were identified as to their human involvement.....you must have been incredibly naive not to realize the consequences of your actions in later life.....sometimes years later......were the burritos worth it? More people should be aware of the various chemicals used in their job and work....including oils and other lubricants......just my opinion of course......
NIX......and check it for what???? Open diodes, shorted diodes, stator windings impedance, full load, what RPM, rotor field resistance, rotor ground, bearings......most auto parts store tests are inconclusive.....they need to define tests and methods used....if you know what to ask for......
Stickler for MSDS sheets that get introduced to my work area. Thanks making more aware of them Bob
To see if its any good BOB
Years ago when I was involved in management in industry, and the MSDS's were becoming prevalent, starting with Pennsylvania's Right to Know Laws (when I lived in Pa.), i became involved in obtaining, collecting, cataloging, compiling and making available ALL chemicals that workers could be exposed to, at their requests....any time, without exception (an MSDS LIBRARY so to speak).....now a FEDERAL REQUIREMENT......very important to know what you're exposed to.
Here to library in each dept and laminated sheets in each area using chemicals and such
Most won't know or how to test an alternator accurately....they're not like a light bulb....EITHER good or bad......they're interested in selling you a new one.....they operate on margins or sales dollars..... ASK to see their test criteria......
I was always told the same thing. If the alternator was working correctly, you could feel magnetism at the back of the shaft.
Glad you got out. I did body work in the 80’s and washed my hands in thinner. Had a girl friend who had a sauna and one day I sweat rainbow out and after the sauna I asked her dad about it ( doctor) he said you do body work and most likely isocyanids) from the paint and thinner and such. Next put my notice in. It was before the days of the white suits you where today
When I worked in Automotives at Canadian Tire, our alternator bench test machine did a printout with all kinds of data. So did our battery load tester.
Show us a typical test data sheet printout for a typical test performed.....do they test individual component or the alternator or just the overall result? Whose test machine was used?.....
It was about 30+ years ago but I would. I had one of my alternators bench-tested and it turned out to be good. Maybe not all auto shops had good machines but you do realize they made machines back then that did very solid, reliable bench testing of alternators and batteries? It wasn't like today where you have to plug a computer or code scanner into something and see what the computer says.
The alternator would need to be disseminated to test individual diodes.......some one is pulling your leg.....you cannot get double the power by rearranging the stator wires....ask them for a sketch of their connections......the alternator is a three phase full wave bridge rectifier circuit design......a loss of any phase results in ONE HALF the output.....not twice the output........the old "guys rule" is a myth...without proof....hearsay means nothing....
Clean all of your grounds including all body grounds.
