TH400 rebuild tech
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[[file:T-400_governor.jpg]] | [[file:T-400_governor.jpg]] | ||
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| + | ==Vacuum modulator== | ||
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| + | The vacuum modulator senses vacuum in the intake manifold as an indicator of engine load. As the throttle is opened, vacuum decreases. The modulator on the transmission will raise the main line pressure in the transmission | ||
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| + | [[file:T-350_modulators.jpg|frame|none|Two types of modulators shown. Low vacuum design on left, ID by the black and red strips. It is larger diameter too]] | ||
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