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20-11-2013, 07:37
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#1
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Registered User
Join Date: May 2012
Boat: Compac sloop 33
Posts: 12
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Wiring Diagram for Mitsubitshi S3L2 engine
I have been looking for a wiring diagram for a Mitsubishi S3L2 engine I bought in a moment of need and now needs repair.
I have tried contacting Mitsubishi and they don't seem to understand what I want, or don't want to.
Any suggestions would be appreciated.
Calusa Sailor
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20-11-2013, 09:11
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#2
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Registered User
Join Date: Sep 2009
Location: Houston
Boat: ‘01 Catana 401
Posts: 9,626
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There shouldn't bee too much to the diagram to begin with. What do you need?
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20-11-2013, 09:46
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#3
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Registered User
Join Date: May 2012
Boat: Compac sloop 33
Posts: 12
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Re: Wiring Diagram for Mitsubitshi S3L2 engine
I have a mess of wires going to 2 relays along with 2 hots coming off the solenoid.
I do not want to just dump the relays and wire it direct, not knowing what they had in mind with the relays.
thanks for your reply.
calusa sailor
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20-11-2013, 09:51
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#4
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Registered User
Join Date: Jul 2007
Location: Toronto, Canada
Boat: Luders 33 - hull 23
Posts: 1,787
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Re: Wiring Diagram for Mitsubitshi S3L2 engine
Quote:
Originally Posted by Calusa Sailor
I have been looking for a wiring diagram for a Mitsubishi S3L2 engine I bought in a moment of need and now needs repair.
I have tried contacting Mitsubishi and they don't seem to understand what I want, or don't want to.
Any suggestions would be appreciated.
Calusa Sailor
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Mitsubishi is not much of a help. What is the engine HP? I ask because it may the same block as in my Westerbeke 30B3 and if so I have one. I also have a source for the Mitsubishi manuals.
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20-11-2013, 09:57
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#5
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Registered User
Join Date: May 2012
Boat: Compac sloop 33
Posts: 12
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Re: Wiring Diagram for Mitsubitshi S3L2 engine
It is a 28 hp. It started life as a generator motor off a large motor yacht that went bad, so the owner just replaced the whole thing. I bought the motor and dumped the generator.
Hope you can help.
Calusa Sailor
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20-11-2013, 09:59
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#6
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Registered User
Join Date: Sep 2009
Location: Houston
Boat: ‘01 Catana 401
Posts: 9,626
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It'll probably be wired by whomever made the generator, not Mitsubishi. Mitsubishi has no control over the control circuitry built by the end user.
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20-11-2013, 10:01
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#7
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Registered User
Join Date: Jul 2007
Location: Toronto, Canada
Boat: Luders 33 - hull 23
Posts: 1,787
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Re: Wiring Diagram for Mitsubitshi S3L2 engine
Quote:
Originally Posted by Calusa Sailor
It is a 28 hp. It started life as a generator motor off a large motor yacht that went bad, so the owner just replaced the whole thing. I bought the motor and dumped the generator.
Hope you can help.
Calusa Sailor
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PM sent.
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20-11-2013, 10:04
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#8
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Registered User
Join Date: May 2012
Boat: Compac sloop 33
Posts: 12
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Re: Wiring Diagram for Mitsubitshi S3L2 engine
Thanks, I guess the relays and extra wiring had to do with the generator and sensors. I am going to wire it myself.
Thanks for your help.
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20-11-2013, 10:08
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#9
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Senior Cruiser
Join Date: Mar 2010
Location: gettin naughty on the beach in cornwall
Boat: 63 custom alloy sloop,macwester26,prout snowgoose 37 elite catamaran!
Posts: 10,594
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Re: Wiring Diagram for Mitsubitshi S3L2 engine
Quote:
Originally Posted by Calusa Sailor
Thanks, I guess the relays and extra wiring had to do with the generator and sensors. I am going to wire it myself.
Thanks for your help.
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more likely one for the glow plugs,and one for the fuel solenoid emergency cut off from temp sensor and oil pressure senders.
was it a vetus generator?
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20-11-2013, 10:17
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#10
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Registered User
Join Date: May 2012
Boat: Compac sloop 33
Posts: 12
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Re: Wiring Diagram for Mitsubitshi S3L2 engine
I do not know what kind of generator it was. I just bought the motor. There surely would be a wire for the glow plugs, and possible one for the emergency shut off. I have about 5 or 6 wires that I would like to know what they are for.
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20-11-2013, 10:21
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#11
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Senior Cruiser
Join Date: Mar 2010
Location: gettin naughty on the beach in cornwall
Boat: 63 custom alloy sloop,macwester26,prout snowgoose 37 elite catamaran!
Posts: 10,594
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Re: Wiring Diagram for Mitsubitshi S3L2 engine
Quote:
Originally Posted by Calusa Sailor
I do not know what kind of generator it was. I just bought the motor. There surely would be a wire for the glow plugs, and possible one for the emergency shut off. I have about 5 or 6 wires that I would like to know what they are for.
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is there a control panel?
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20-11-2013, 10:23
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#12
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Registered User
Join Date: May 2012
Boat: Compac sloop 33
Posts: 12
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Re: Wiring Diagram for Mitsubitshi S3L2 engine
yes, but it is shaky at best. I will have to replace it before I get underway.
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20-11-2013, 10:41
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#13
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Senior Cruiser
Join Date: Mar 2010
Location: gettin naughty on the beach in cornwall
Boat: 63 custom alloy sloop,macwester26,prout snowgoose 37 elite catamaran!
Posts: 10,594
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Re: Wiring Diagram for Mitsubitshi S3L2 engine
here is your engine,these guys were very helpful sending me pdf files of my 33hp,discontiued mitsibushi engine.
there is a help section on the home page.
but my guess is the wiring will have been done by the company that put together the genset
S3Q2 ENGINES - Diamond Diesels
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20-11-2013, 14:05
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#14
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Registered User
Join Date: Jul 2011
Location: UMR mm 283 /winter in Kansas
Boat: Bayliner 3870 41' oal.
Posts: 945
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My Westerbeke 8.0 has the same engine. It only has wiring for the start & charge circuit & the safety shutdown circuit, if you post some pics of your unit I may be able to help you identify what your wanting to find.
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21-11-2013, 09:39
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#15
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Registered User
Join Date: Nov 2013
Location: Toronto
Posts: 3
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I'm considering buying a boat with a 42hp vetus. Done a pile of online research. The smaller vetus m3.28 is the marinized version of your Mitsubishi. Vetus online has all the parts docs and ops docs and wiring line diagrams. The vetus engine is stamped with your Mitsubishi model and is referred to in the operator manual so typical electrics will be identical.
It's harder to find Mitsubishi doc, but I have seen those as well - but they are all industrial applications so you have to do se translation. Hope that helps.
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