Re: ZIS 110

Posted by HH56 On 2009/4/8 20:21:57

One minor clarification for the postwar Packard systems. The pump only turns one direction and supplies pressure. To lower a window or move the seat back, the pump does not operate--just the solenoid valve opens and spring tension pulls the window down and fluid returns. To raise or move the seat forward the valve opens and pump operates simultaneously. To open or close the top, the pump operates for both motions but there is a reversing valve to direct the fluid properly. Gerd is correct on the other point--it's impossible to raise and lower a window at the same time. Believe prewars work the same but not entirely sure-- although they have very different parts so the fluid may get sucked out of those if the pump runs when lowering.

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