Battery not charging.......

[WIMUSKY]

2003 Johnson 60hp 4 stroke
J60PL4ST
3 phase rectifier

Checked with meter, not charging. Even have an alarm going off. Checked all connections, everything is tight no corrosion. Swapped battery with a 1yr old deepcycle, no change
Bench tested the rectifier.
Forward bias positive:
.66
.66
.63
Should the diodes read the same, or is a little variation fine?
Reverse bias:
All OL

Forward bias negative:
.63
.67
.67
Reverse bias:
All OL

Is the rectifier fine?
Thanks

 

[Chris1956]

Is it just a full wave rectifier or is it a VR?

 

[Crosbyman]

3 phase rectifier need 3 yellows carrying each stator AC power at 120 degree phase difference..... each positive phase routed out to the battery for charging.

you could try a 3 phase rectifier from amazon as a test (dirt cheap and higher capacity handling fwiw...) it won'T regulate but you can try

https://www.amazon.ca/s?k=3+phase+diode+rectifiers&crid=7CUYAPU19O2M&sprefix=3+phase+diode+rectifiers%2Caps%2C345&ref=nb_sb_noss

if same condition.... measure stator output on yellows..... or start there first !!

 

[WIMUSKY]

I believe it's both.....
Suzuki SH601A-13

 

[Crosbyman]

chat GPT says it is a voltage regulator not just a rectifier.
static battery voltage should rise when the engine runs. if not bad regulaor or lack of AC from stator... check ALL connections !!

see parts list... expensive little thing... not OEM but amazon has cheaper stuff to do the job if mounted properly .

DUZFOREI 67F-81960-12-00 Voltage Regulator Rectifier, Replacement for Mercury 4 Cyl 4 Stroke 75 2000-2005, Replacement for Mercury 4 Cyl 4 Stroke 90, Replace 67F-81960-11-00 804278A12, Voltage Regulators - Amazon Canada

DUZFOREI 67F-81960-12-00 Voltage Regulator Rectifier, Replacement for Mercury 4 Cyl 4 Stroke 75 2000-2005, Replacement for Mercury 4 Cyl 4 Stroke 90, Replace 67F-81960-11-00 804278A12 in Voltage Regulators.

www.amazon.ca

a Mercury version my work just as well $32$ CDN