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How does the manifold heater do what it does

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Eddie in KY

11-29-2002 23:14:05




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I have a DB 885. The manifold heater isnt working, not getting current. I was just wondering, what does it do, and how does it do what it does. This may be a stupid question, but this is my first diesel tractor. Any help will be reatly appreciated. Thanks




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Elmer

11-30-2002 05:46:06




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 Re: How does the manifold heater do what it does in reply to Eddie in KY, 11-29-2002 23:14:05  
The ignition switch has 4 positions. Off, run, heat, and start. You can feel the extra spring in the switch between heat and start. Current to the heater plug heats up and element inside the plug and when reaching the right temperature opens a thermo valve and allows diesel fuel into the plug. The element ignites the fuel and starts a fire in the manifold. You can usually hear the ignition. I have seen the switchs stick in the heat position and when the tractor is shut down it will cause a fire in the manifold and burn the intake hose out and eventually the whole tractor. That only happens when the owner mistakenly leaves the key on when leaving the tractor. Something to keep in mind!!!!

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