Another generator problem? Two questions?

[Ralph L. Fullenwider]

Yes, to check the coil of the solenoid. You should have 12 vdc showing on
the meter with the wire attached, if you see only about 7vdc then remove
the wire from the terminal and check voltage.

Ralph

At 11:22 PM 5/27/2007 +0000, you wrote:
>Ralph,
> I will check that tommorrow and let you know. Just to make sure I
>understand you correctly, you want me to put the volt meter on the
>small terminal of the start motor solenoid and see if 12vdc is there
>when I push the start switch?
>
>Tom Sorrentino
>1987 PT38
>Bedford Hills, NY
>
>--- In WanderlodgeForum@yahoogroups.com, "Ralph L. Fullenwider"
> wrote:
> >
> > Tom:
> >
> > I have seen the temps go from 190 to about 210 F, perhaps a
>radiator
> > cleaning but that is not your problem.
> >
> > When you push the start switch C relay closes completing a circuit
>from
> > 12vdc to ground through normally closed contacts of the CR relay.
>When the
> > C relay pulls in, it closes a set of C relay contacts to the
>starter
> > solenoid. When the starter solenoid pulls, it closes a set of
>contacts to
> > the fuel solenoid and supplies a flash voltage to the field. also a
>set of
> > contacts close and supplies voltage to the starter motor. As the
>starter
> > motor turns over and the gen set starts the starter solenoid opens
>and
> > another set of contacts in the start solenoid continues to supply
>voltage
> > to keep the fuel solenoid energized.
> >
> > It sounds like your starter solenoid is faulty. The is the one on
>top of
> > the starter motor proper. Check it with a meter, you should have 12
>vdc on
> > the small post, if only 7 vdc on that wire then the coil of the
>start
> > solenoid is bad. Remove the small wire to the small post and check
>the
> > voltage again to prove it out. If disconnected and you have 12 vdc
>when the
> > switch is pushed, will prove the start solenoid being bad.
> >
> > Safe travels,
> >
> > Ralph and Charolette Fullenwider
> > 84FC35
> > Duncan, Oklahoma
> >
> > At 05:26 PM 5/27/2007 +0000, you wrote:
> > >We had an un seasonable hot weekend here and I was running the gen.
> > >with all three A/C's on. I have the yanmar with the 12.5kw kohler.
> > >Water temp. was runing slightly below 220 degrees (which I haven't
> > >seen that high before). Since this is my first summer with the
>coach,
> > >my first question is to the guys with yanmars. What kind of water
> > >temp. do you see on yours when running the gen. fully loaded on a
>92
> > >degree day?
> > >
> > >While we were in the store for a 1/2 hr or so, came out and the
>gen.
> > >was off. None of the start switches will do anything, no clicking,
> > >nothing. The fuse is good. With the water temp. cooled down, I
> > >disconnected the hot water shutdown, still no cranking. If I hot
>wire
> > >the fuel solenoid with a jumper and jump it at the starter the gen.
> > >starts fine, runs and produces voltage. I just started looking at
>the
> > >schematics for the control box and I'm thinking it might be one of
> > >the relays in there. They're labeled CR, C, 1CR and 2CR. Am I on
>the
> > >right path here? And would anybody know which one would give me
>these
> > >symptoms? I'm pushing the limits of my abilities here!
> > >Thanks
> > >
> > >Tom Sorrentino
> > >1987 PT38
> > >Bedford Hills, NY
> > >
> > >
> >
>
>
>
>
>
>Yahoo! Groups Links
>
>
>

Safe travels,

Ralph and Charolette Fullenwider
84FC35
Ralph's RV Solutions, Duncan, Oklahoma