Alternator/Voltage Regulator problem

[Kurt Horvath]

Royal, I had the same problem a few months back

The alternator tached to 300 amps. The engine batts went down to 11V.
The Coach Batts. went up to 15.5V. The check engine light came on.

I'm happy this was only the bi-monthly 50 mile drive around the block!

The roadside fix, jumper cables from the engine Batts. to the house
Batts. It bypasses the solenoid, It got me home without frying
anything.

I just found these relays, Eaton / Cutler-Hammer # 6041H105 for
> $115.35
>
> http://www.masaero.com

Kurt Horvath
PT-42 WLWB
10AC


--- In WanderlodgeForum@yahoogroups.com, "Stephen Birtles"
wrote:
>
> Check the regulator
>
> Stephen 77fc35
>
>
> --- In WanderlodgeForum@yahoogroups.com, "bbwlwb88"
> wrote:
> >
> > I am having an intermittent problem that started about 3 weeks
ago.
> > Sometimes, when starting the engine, my alternator pegs at
maximum
> > output (300 amps) and the coach batteries peg the gauge at
maximum
> > voltage charge (18 volts). The cranking batteries charge shows
only 12
> > volts when this happens which indicates to me they aren't
charging at
> > all . If I shut down and restart the engine several times, the
> > alternator and the charging voltage on the coach batteries and
engine
> > cranking batteries eventually will work correctly. Normally,
when
> > starting this coach, the engine starts and the alternator goes to
300
> > amps and then drops quickly to normal output (30 to 40 amps) and
the
> > coach batteries, as well as the engine cranking batteries, charge
at
> > their normal level (about 14 volts). The engine is a Detroit
Series 60
> > with the large alternator.
> >
> > I would appreciate information on what should be done to identify
and
> > correct this problem.
> >
> > Royal Washburn
> > '97 43'WB
> >
>