CB550 Charging Problems

[sxecafe]

I was driving to my buddies house yesterday about 15 miles from my house. I was waiting at a light about a block away from his house and without any notice the bike dies I look down and the gauge is dark. I go to look at and fouled connections and everything looks fine. My hunch is its the alternator.

I get it home (a friend helped me tow it) and pull the cover off. The manual says that the field coil should test to 4.6ohms, with the multi-meter set to R x 10. The field coil tests 4.4 ohms but my meter only has R 20:

Then I test the stator coil. Manual says spec is 0.35 +/- 10%. I get the below:

I have two other bikes with the same stator set up so I test those and get the same readings. Something doesn't add up. Either the manual is wrong or my meter is giving me different readings that I can't interpret.

Some more info, I unplugged the alternator from the circuit and the gauges/lights turn on. I plug in the stator coil, they dim and then the field and they go dark again. Also, the battery, as suspected is very low at 10.4 amps.

I have a regulator/rectifier combo unit from DCC. That could be an issue too but i dont know how to test that. I feel confident saying that the bike is not charging but I can't narrow down the culprit. Anyone have any suggestions? Cu the battery be an issue somehow?




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[sxecafe]

Bump


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[Sonreir]

Hook up a set of jumper cables from a car to your bike (with the car turned off) and get things running. Check voltages across the battery terminals with bike running. Give it a bit of throttle and voltages should rise.

 

[hunterrupp33]

For the life of all holy, please check the main rectifier, NOT the little two pronged one but the one with the yellow wires. it connects directly to the stator. Do a continuity test on the rectifier and check with the manual. Theres a step by step on either this forum or the SOHC one. I, myself and 3 other people I know that had charging issues with the 550, found it to be just a rectifier.