Author Topic: Testing charging circuit  (Read 1136 times)

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Offline JerryL

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Re: Testing charging circuit
Reply #10 on: October 26, 2020, 02:18:20 PM
Ran a cable direct from rectifier to battery, new connectors
voltage direct from rectifier / not connected to battery  14. 1 VDC
connected to battery drops to 12.4 VDC
So this new cable or existing cable/connectors in loom makes no difference.
Nothing seems to be running warm.

Tried 2 rectifiers, same result
Cleaned/tightened main earth, is there another one somewhere?
Cleaner/tightened all connections on started solenoid
Traced all wires to fusebox, all ok
Pulled all fuses not required to run bike

Bike starts and runs every time.
No EML light on - when fuses replaced

Can't think of anything else to try.

Anyone?

Offline tim.8061

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Re: Testing charging circuit
Reply #11 on: October 26, 2020, 05:29:33 PM
Sounds like the output is still faulty and can't supply a charging current so the volts drop, unless battery is duff - if both the rectifiers are definitely Ok then check the outputs of the three phases of the alternator.

Here is a good thread on diagnosing charging problems
https://www.triumph675.net/forum/showthread.php?t=35227

Offline JerryL

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Re: Testing charging circuit
Reply #12 on: October 26, 2020, 07:40:49 PM
Thanks for all the replies, gonna retest everything again tomorrow.

Offline JerryL

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Re: Testing charging circuit
Reply #13 on: October 28, 2020, 06:48:06 PM
Found the problem, new alternator cable must have been too long and it caught the starter cog, 2 phases only. On the plus side repaired cable and it's all working ok.

 


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