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Thermostatic Vacuum Switching Valve (Tercel)

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  1. Drain coolant from radiator and remove TVSV. Immerse threaded end of valve in container of water with thermometer. See Figure.
  2. Using ice, cool water in container to below 45°F (7°C). Check that air flows from port J to port M and L and from port K to port N. Heat water to 63-122°F (17-50°C). Check that air flows from port K to port N and L and from port J to port M.
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