Re: [Amel Yacht Owners] Diode in Starter shutoff circuit - Super Maramu
Danny and Yvonne SIMMS
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about 40 years ago I had a diesel tractor with an oil bath air filter, excellent for the high dust situation the tractor worked in. However having done its job of removing dust and sediment very well it needed to be thoroughly cleaned. Being soaked in engine oil that was not an easy process. I washed the gauze in petrol, shook and tapped the unit to remove the petrol, left it to dry and then refitted it and started the engine. Oh boy, there were some petrol fumes left and that engine screamed at impossible revs and nothing on earth would stop it until the petrol fumes had gone. I pulled the stop cable, I turned off the fuel, and then retreated to a safe distance and watched until it stopped. Remarkably the engine seemed to have suffered no damage. It would have been insane to have blocked the air intake with anything. If a body part had gone anywhere near it it would have gone through the engine. That was a runaway situation, and as Bill said a diesel at revs will cheerfully run on any oil product. I was circumspect in my first comment as I assumed the reference was to an engine at idle where the electric stop failed.
From: "'Bill & Judy Rouse' yahoogroups@... [amelyachtowners]"
To: "amelyachtowners@..." <amelyachtowners@...>
Sent: Tuesday, 3 June 2014 3:41 PM
Subject: Re: [Amel Yacht Owners] Diode in Starter shutoff circuit - Super Maramu
The rule for blocking air intakes to shut down a runaway engine, is do not do it, because it is possible that your piston rings are worn enough that the engine will pull air and oil from the crankcase and continue running until it burns itself up.
Get familiar with the engine you have. All diesels that I have seen on Amels and other boats have a mechanical shut off. Your generator has the same. Some engine manufacturers paint it yellow or red.
On Mon, Jun 2, 2014 at 10:44 PM, Richard03801 richard03801@... [amelyachtowners] <amelyachtowners@...> wrote: