SOHC.co.uk Forums > CB500/550

Alternator problem (maybe)

(1/1)

Trigger:
I have the 500K not charging. Now on a three phase system you check between the yellow wires for a reading. Everything seems fine. So i checked between the white and green, ok. But i have a signal between all wires and ground. I know on modern bikes this is a problem but, is it a problem on these old girls??? 

AshimotoK0:
Is it a 500/4 k, if so  ,there, should not be any resistance between any of the yellow wires and ground. If there is it is usually  due to breakdown of insulation of the laquered 'magnet' copper wire. I had 2 400/4 stators fail in this mode, back in the day. I think it's because they don't run in oil like the twins/CB750 and you can get corrosion of the laminated steel part.

Cheers .... AshD

Trigger:
Cheers Ash, just wanted to double check.

Bryanj:
On the US site I put up an e Honda document explaining the 3 phase charging circuit PM me your emaail addy again (I don't keep them!) and i will send you a jpeg copy

AshimotoK0:

--- Quote from: Bryanj link=topic=6619.msg36312#msg3631
2 date=1400366104 ---On the US site I put up an e Honda document explaining the 3 phase charging circuit PM me your emaail addy again (I don't keep them!) and i will send you a jpeg copy

--- End quote ---
It's a brilliant design Bryan, as it does not use brushes for the field like car versions of the time. OK it has an electromagnetic voltage reg. but hey it was probably designed in 1968.

Cheers ...  AshD 

Navigation

[0] Message Index