Scotty - A distillate manifold heat control valve operates totally different from a diesel exhaust brake butterfly.
Internally the manifold heat control is a diverter valve. In the "hot" position it routes exhaust through a passage that surrounds the center section of the intake manifold before sending it up the stack. In the "cold" position exhaust is sent directly up the stack, bypassing the internal manifold passage.
Unlike a diesel brake, the heat control provides no appreciable additional exhaust restriction (back pressure) when set to the "hot" position.
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Today's Featured Article - Identifying Tractor Noises - by Curtis Von Fange. Listening To Your Tractor : Part 3 - In this series we are continuing to learn the fine art of listening to our tractor in hopes of keeping it running longer. One particularly important facet is to hear and identify the particular noises that our
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