Re: [MV] M1009 Glow Plug Circuit Question

From: Steve Hight (slhight@qwest.net)
Date: Mon Sep 09 2002 - 08:09:45 PDT


I could not agree more. Manual is the only way to go. I have converted
some to manual before they even fail.

Sometimes when these systems fail the glow plugs end up getting turned on
when the engine is running and hot, and this can lead to engine damage if
you do not fix it asap.

Steve

----- Original Message -----
From: "Stu Ellis" <stuellis@attbi.com>
To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
Sent: Monday, September 09, 2002 5:51 AM
Subject: Re: [MV] M1009 Glow Plug Circuit Question

> Hi!
> It is done that way because the regular system doesn't work right half the
> time even with good parts. Most problems really show up when cold weather
> starting. I converted mine to manual as has most in my club. Saves a lot
> of grinding of starter and flywheel to get started. Your system could
have
> been converted for various problems such as filter assembly leaking air or
> heating element in filter assembly bad, glow plugs not cycling long enough
> on to get hot enough for easy starting, etc. I hold button for 15 seconds
> and it starts right up. Save yourself problems and leave it manual. I
> replaced automatic part with all new parts and controller first.
>
>
> Stu
> Southern New Hampshire, USA
> "Live Free Or Die"
>
> MVPA #14790 MVMVC
> 1967 M151A1 Army Jeep
> 1964 M416 1/4 Ton Trailer
> 1986 M1009 CUCV
> ----- Original Message -----
> From: "Mr. Bones" <mrbones@ixks.com>
> To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
> Sent: Monday, September 09, 2002 1:32 AM
> Subject: [MV] M1009 Glow Plug Circuit Question
>
>
> > List,
> >
> > Can any of you experienced diesel mechanics tell me what component would
> > determine the cycle time of the CUCV glow plugs?
> >
> > The vehicle in question is a 1986 M1009 with the stock "J" 6.2 L.
> >
> > The previous owner wired in a manual button for the plugs and we want to
> > return it to the original temp sensor controlled, wait light setup.
> >
> > I know the system has a controller, a relay, and a module among other
> > things, and all are pretty much readily available, I just don't know
> > which one to buy to begin to remedy the current setup, in other words,
> > what component would have failed to cause somebody to rewire with a
> > manual button?
> >
> > I already have the gp system wiring diagram from the -20 manual, but am
> > not quite sure what the sequence of events is supposed to be, like turn
> > key on, energize gp circuit, temp sensor determines if gp is needed to
> > assist starting, and sends signal to (?) that controls length of gp
> > cycle, which energizes and times plugs for a predetermined time, shuts
> > them off, then shuts off wait light.
> >
> > Any help from your vast pool of knowledge would be greatly appreciated.
> > I have been wrenching on gas motor Chevys for a number of decades but
> > these diesel critters are a new learning experience for me.
> >
> > Many thanks in advance,
> >
> > T. Bones Morris
> >
> >
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>
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>
>



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