Emergency shut down mod

[Jeff Miller]

I had it happen on a 3208 after a fuel injector broke, filling the
crankcase with enough diesel to hit the rods and churn it up.
Happened in Chicago, ran full-throttle with the fuel shut off, ...
fortunately it isn't difficult to overcome the 3208 with the brakes.

Often it is simply the injection pump that causes the runaway
(usually), cutting the fuel supply will kill it, spinning off a fuel
filter so air gets in works in this case (or cutting a line, I guess
the sledge-hammer is faster when you're saving an engine).

I did watch a farmer try to stall a runaway tractor against a big oak
tree, it dug big holes before he got it stopped.

The flap on the PTs works pretty well usually, I haven't heard of it
failing (except on one '86 which was on fire). Engine can't run
without air no matter how much fuel you give it.

- Jeff Miller
in Holland, MI


--- In WanderlodgeForum@yahoogroups.com, "randydupree2000"
wrote:
>
> --- In WanderlodgeForum@yahoogroups.com, "Stephen Birtles"
> wrote:stephen,runaway diesel engines are scarey,i've
> been around several runaways,we shut them down by knocking the fuel
> filter off with a hammer,shoving a raincoat in the air filter to
try
> to choke the engine down(it didnt work),the flap in the early DD's
> don't work either,it will slow it down,but not shut it down.its
hard
> to stand there and try to save an engine when its running wide
> open,take a sledge hammer,knock off a fuel line,then run!
> randy
> >
> > have never seen a 4 cycle runaway But iam sure it can happen but
> have
> > had a 2000 horsepower GM runaway and blow it was neat 500
gallons
> of
> > old oil every where
> > Stephen
> > --- In WanderlodgeForum@yahoogroups.com, "Ralph L. Fullenwider"
> > wrote:
> > >
> > > Scott:
> > >
> > > Two different engines and systems. My post concerns the PT's
not
> FC's.
> > > Sorry for my not making that clear.
> > >
> > > Safe travels,
> > >
> > > Ralph and Charolette Fullenwider
> > > Ralph's RV Solutions, Duncan, Oklahoma
> > > http://home.swbell.net/rlf47/index.htm
> > >
> > > At 06:26 PM 4/25/2006 +0000, you wrote:
> > > >"there is not a manual cable pull such as in the older Bird's"
> > > >
> > > >Does my '82 FC have one of these? Where is it?
> > > >
> > > >Scott Forman
> > > >82 FC35RB
> > > >Memphis
> > > >
> > > >--- In WanderlodgeForum@yahoogroups.com, "Ralph L. Fullenwider"
> > > > wrote:
> > > > >
> > > > > Good morning everyone:
> > > > >
> > > > > There, recently, has been a situation that needs to be
> addressed
> > > >with a
> > > > > modification added to the '88 through 90's Birds.
> > > > >
> > > > > I am working on drawing a schematic which adds a Bosh relay
> and a
> > > >switch
> > > > > located in an accessory slot on the dash, for the engine
> emergency
> > > >shut
> > > > > down of the engine.
> > > > >
> > > > > Problem: A relay, # 34 welded the contacts and the Coach
> could not
> > > >be shut
> > > > > down with either the dash or rear key switch and there is
> not a
> > > >manual
> > > > > cable pull such as in the older Bird's.
> > > > >
> > > > > Solution: Adding a relay to the fuel shut off valve
> circuit, that
> > > >is
> > > > > controlled by a switch on the dash. The relay coil will be
> on the
> > > >switch
> > > > > and the wire going to the fuel shut off valve on the engine
> will be
> > > >on the
> > > > > normally closed side of the relay, thus if the added relay
> ever
> > > >fails then
> > > > > it will fail closed keeping the power on the fuel shut off
> valve.
> > > >By
> > > > > switching the relay, the circuit to the fuel shut off valve
> is
> > > >opened up
> > > > > and you have engine shut down.
> > > > >
> > > > > I will try to get this modification added to the files
> section this
> > > > > weekend, with the correct wire numbers/colors and
> connections for
> > > >those who
> > > > > might be interested.
> > > > >
> > > > > This circuit will be added to Ken and Patti
> Marsh's "ToWanda" Which
> > > >is an
> > > > > '89PTWB.
> > > > >
> > > > > So far as I know, this is a first with this "no shut down"
> > > >problem. It,
> > > > > seemingly has always been, "I can't get it to start"
problem.
> > > >
> > > > >
> > > > >
> > > >
> > >
> >
>