Topic: CB550F Charging

[parm94]

I have been doing charging troubleshooting on my 76 550F (wiring diagram attached) I found my rectifier to be bad so I replaced it with a rect/reg combo recently.

After testing resistance between the yellow wires of the stator, I found ~1.8 ohms but the specs should be 0.35 +/- 10%.

There is also a whole 1 volt drop at the regulator wires from what the battery reads (Battery reads 12.6 reg wires read 11.6). Above 3k rpm the battery was reading max 13.8 V but I will check again and update.

My questions are:

a) Does this warrant stator replacement?
b) Is that voltage drop I'm seeing at the reg wires caused by the stator or should I be looking to clean up connections?
c) How do I check the direct AC output of the stator?

[parm94]

First and foremost, you need to clean the connections from the stator, the plug fo the reg/rwc unit, and every other one you can put your hands on. Then re-test.

What would be a good method of cleaning? Filing and some acetone?

The connections that I tested from the stator were cleaned and still read the same resistance. I tested where the stator connections meet the harness beside the fusebox. Do you recommend removing the screws to gain access to the stator itself to test?