Override switch function

[ttikalsky]

There is a switch on the dash and in the engine bay labeled
"override". Does anyone know the purpose of this switch? I was told it
is to allow you start the engine when the "system" shuts down because
of "out-of-norm" conditions and you can get off the road. I believe
the engine is pre DDEC becuase it has a manufacter date of 1984 but
not sure how to tell.

Also the high temperature shutdown control (located drivers side upper
rear by the coolant intake for the coach heat) is melted and the wires
have been cut. I would like to have this working, has anyone replaced
this part? What are the chances of finding a wires schematic for this
switch?


Troy Tikalsky
1986 Newell 40' DD8V92

[John Suter]

Hi Troy,

> There is a switch on the dash and in the engine bay
> labeled
> "override". Does anyone know the purpose of this
> switch?

I'm not clear if you are asking about a Newell or a
Bird. For most Bluebird Wanderlodge models, these
switches have two different functions. The engine bay
override switch location permits the coach ignition to
be controlled completely from that location, just as
one might control it from the dash. Note the "key
lock" into which an ignition key will fit. In a word,
when the rear switch is in "override," the dash
ignition is disabled and the rear key position becomes
primarily, and visa-versa when not overridden. This
feature is very handy when maintenance is performed
that requires repeated engine starts and stops and
running from rear to front can thus be avoided.

Depending upon year and coach model, the switches on
the dash variously labeled "override," generally
perform "battery connection" functions. One may
override the "isolation" (or separation) function of
your engine battery bank from your coach/house battery
bank. In that case the banks are normally
electrically separated until "overridden" when they
become electrically "combined" - for example, if your
engine batteries become discharged, that "override"
switch "combines" the house/coach batteries with the
dead engine bank to permit the engine to be started.
For many models, a similar switch functions to
permit the generator to be started from another
battery bank. Your owner's manual should provide the
details for your specific coach.

> I was told it
> is to allow you start the engine when the "system"
> shuts down because
> of "out-of-norm" conditions and you can get off the
> road. I believe
> the engine is pre DDEC becuase it has a manufacter
> date of 1984 but
> not sure how to tell.
>
> Also the high temperature shutdown control (located
> drivers side upper
> rear by the coolant intake for the coach heat) is
> melted and the wires
> have been cut. I would like to have this working,
> has anyone replaced
> this part? What are the chances of finding a wires
> schematic for this
> switch?

Although these hypothetical, and highly unlikely,
scenarios may be overcome via an override switch, the
switches were designed for flexibility and redundancy,
not to for their value to frighten.

> Troy Tikalsky
> 1986 Newell 40' DD8V92

John Suter
2000LXi and prior models


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[Mike Hohnstein]

Good luck, sounds like you will need it. Always scary when things with wires
are "abandoned". I would be checking on the coolant ph if I were you. You
don't get any second chance with overheating a Detroit. Replacement engines
start at about 20 grand installed.
MH
----- Original Message -----
From: ttikalsky
To: WanderlodgeForum@yahoogroups.com
Sent: Sunday, April 02, 2006 11:55 PM
Subject: [WanderlodgeForum] Override switch function


There is a switch on the dash and in the engine bay labeled
"override". Does anyone know the purpose of this switch? I was told it
is to allow you start the engine when the "system" shuts down because
of "out-of-norm" conditions and you can get off the road. I believe
the engine is pre DDEC becuase it has a manufacter date of 1984 but
not sure how to tell.

Also the high temperature shutdown control (located drivers side upper
rear by the coolant intake for the coach heat) is melted and the wires
have been cut. I would like to have this working, has anyone replaced
this part? What are the chances of finding a wires schematic for this
switch?


Troy Tikalsky
1986 Newell 40' DD8V92






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