Another generator problem? Two questions?

[thomas_sorrentino]

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
> >
> >
>