Quote:
Originally Posted by dieseldan44
That's kind of dumb...they should make it so that no vacuum is applied when there isnt a change in the lock state occuring. The locks hold their state with or without vacuum anyway. This way a little tiny leak wouldnt drain the vacuum resevoir. Oh well, Im sure there is a reason the zen masters of vacuum didnt do it this way...
dd
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Well, I can kind of see why they did if I understand the system correctly. Its all mechanical. The drivers door always has vacuum supplied to it, moving the the lock knob up and down just diverts the vacuum to the "locked" hoses or the "unlocked" hoses. So the drivers door has no idea whether the other doors have locked or unlocked, it just knows that the valve is open to either the locked or unlocked circuit.
There would have to be some kind of delay to open the valve to "locked" or "unlocked" for some length of time, and then have the valve close to both circuits. That would prevent a small leak in the system from draining the vacuum reservoir. Maybe that was impractical to do.