Cummins 6cta 8.3 Alternator

Boatdave

New Member
Sep 2, 2008
113
St.Louis
Boat Info
2001 Sea Ray 410 Express SOLD!
2005 Century 1701 Center Console
Engines
450 Cummins
My alternator is not charging. Wondering if it has an external voltage regulator. It does have 2 wires coming off the back and leads to the rear of the engine into a Diode Block. Checked the Diode and swapped between engines and no difference.
My guess is that it's internal but want to make sure I'm not missing it before I remove it. Cummins told me that they ship these without the alternator and it would have been Sea Ray that put on their marine version. Any help is appreciated.
 
Last edited:
Went ahead and pulled it off and it is internal voltage regulator. Not an easy one to remove as it's on the starboard engine/starboard side. 2 hours later......
 

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