From: Neil E. Amrhein (neil@compu-powr.com)
Date: Mon Jun 02 2003 - 05:19:18 PDT
Dave,
I would be a little concerned if my voltage is always running much over
28.8V. When the batteries have been drained from a lot of cranking, this is
probably OK. But, you really don't want 15+ volts going to batteries that
don't need it for extended periods of time. It will only shorten their life.
As was pointed out, the clunking is the glow plug relay. The wait light
on these trucks must be on a timer. It comes on when the key is first turned
on, but it does not turn on and off as the glow plugs actually cycle. I had
a little concern about this when I first got my truck, because I was used to
my '88 Crew Cab 6.2, where the light is actually tied to glow plug
operation. I thought maybe this "feature" was only found on the M1010
200-amp systems, but I guess all CUCV's have it, since your M1009 does it
too.
--Neil
----- Original Message -----
From: "Dave Jenkins" <gpw1942@bellatlantic.net>
To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
Sent: Monday, June 02, 2003 7:19 AM
Subject: Re: [MV] M1009 CUCV voltage?
> Thanx Richard,
> I was a little concerned the voltage was too high.
> Question for you.
> After the amber wait light goes out, which I assume means the glow plugs
are
> up to temp, do the glow plugs still receive power for a short time until
the
> engine is warmed up? Say on and off for about a minute? I was thinking the
> clunk was also a relay since it cycles just before the amber wait light
goes
> off before starting the engine.
> Dj
>
> Richard wrote:
>
> > Dave, when the engine's running (i.e. alt. is
> > charging), you should see 14.2v to 15.5v
> > per 12v battery in your system; depending on
> > temperature. The hotter it is, the lower the
> > charging voltage. So, for a "24v" system,
> > anywhere from 28.4 to 31 volts is 'normal'.
> >
> > The above assumes a 'nominal' charge rate;
> > i.e. 5-10 amps, i.e. your battery is already
> > fully charged. If you're pumping 100+ amps
> > into the battery, you could easily see 16v
> > per 12v batt when it reaches full charge.
> >
> > re; the 'clunking'. If the voltage is dropping
> > from 30 to 22, you've got a helluva load going
> > on ! <g> Either that, or you've got a bad
> > connection somewhere. "Clunking" makes
> > me think "relay"....but what it is, I don't know.
> >
> > hope this helps,
> >
> > Richard
> > --
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