Problem with charging battery

[stra34]

Hi everyone, I have a 1991 zx11 and I am having a problem with my battery dying in a week. I put a new battery in the motorcycle. I started the bike and checked the output of the charging system. Found it at 12.4 volts. I found the black wire white wire connector from the regulator burnt. fixed that wire but still will not charge the battery? I am thinking it might be the voltage regulator or maybe a generator brush? any help would be great. thanks.

[stra34]

Looks like the rectifier is burnt? looks as if it got really hot. Wondering if a zx11D or a zg1000 concourse alternator assembly will fit on my 1991 zx11C? does any one know? thanks

[Hammerhead]

Something may be draining the battery with everything turned off. Check for current draw at the battery with the key off. If there is anything like a clock or other electrical device that's been added, disconnect before checking. If there is no static drain, there has to be a problem in the charging system. Fixing the wire probably didn't fix what caused it to burn. Charge output should be closer to 13.2 volts with the motor revved.

[stra34]

Hi, I rechecked the regulator and rectifier. The rectifier ohm in both directions. Which looks like the diodes are bad in the alternator. I have a friend with a 1994 zx11D alternator for sale, so does any one know if a zx11D alternator will fit on a 1991 zx11C. Thanks

[rsr]

WILL FIT same / same
also while you are in there check the engine side
drive flange hub bolt for correct torque, they have
been known to loosen up

[stra34]

Great thanks a lot for info? that bolt is on the back of the alternator? thanks again

[rsr]

The one that tends to loosen up is in on engine side
not the alternator side """USE RED Loctite"""