Super 77 6V charging

I'm having a problem with my 1955 Super 77 charging. 6v. Battery is good, 6.3V, generator was gone through 3 years ago, and new voltage regulator installed, polarized gen, and installed, acts like it wants to charge then drops back to 0, if i turn on the lights it goes to discharge. i put it back in the barn where it sat for 3 years. fast forward to a week ago, i put fresh gas in, charged battery, and fired her up. no charge. took it to a gen shop yesterday, he put on his test bench and it was charging 7V at 10amps. took it back home, traced every wire per wiring diagram, and checked continuity on everything, cleaned wire connections, installed, polarized, started it up, it tried to charge, went to 3-4amps then wavered a bit and back to 0, again lights on makes it discharge. whats going on? i'm scratching my head. i took the cover off the voltage regulator when running at 3/4 to full throttle and the cutout contacts arent closed, i manually pushed them closed and it began to charge a little, then the charging wavered and dropped back to 0. after that even manually closing the contacts they wouldnt stay, kept immediately popping back open
 
Try grounding the field terminal and see if it charges. I would bet it does because I have given up on mechanical regulators because all I can get are junk
that may charge a little and quit.

You are pushing the cutout contacts together. You might try cleaning the other contacts (the regulator part) carefully and see if that helps. Or push on
the spring of the regulator contacts and see if it kicks in. IF it does I have tweeked the spring a LITTLE and it might go. This changes the charging
voltage and it could go too high. (I may catch from others on this)

I am currently experimenting with electronic regulators on those generators. I thought I had something fairly simple figured out but ran into a problem.

The electronic ones work way better than the mechanicals when they work.


RT
 
Thanks for the reply, we finally got it to charge by gently touching the regultor side with the cover off, with the cover on we just tap the regulator with my jack knife, sometimes when I throttle down and the cutout opens I can go back up in throttle and the charging comes back, sometimes not, so while plowing today I just run my throttle up, tapped the regulator and went for it, I know it's not a good fix but it's keeping me in the field right now
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top