On 1/7/2012 5:15 PM, Evan Mac Donald wrote: > Are they BOTH dead, or have I missed something? It should be fairly obvious, > shouldn't it? The movements are not glacial, or the engines would overheat, > right? Actually, they do move pretty slowly. I have an AC engine, but assume the WC uses the ubiquitous wax pellet type of thermostat. There's a small round cylinder on the engine side, inside is a pellet of wax made to melt over a specific temperature range. As it melts, it expands, pushing a rod to open the valve plate against spring pressure. The rated temperature is where they first begin to open, they don't open fully until the temperature is 10-15F higher. |
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