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I'm a bit confused why an accredited / certified / hydraulic guru would recommend holding your slide switch in for several seconds after the first change in tone of the pump usually indicating the slides are fully deployed / retracted?? That's kinda like butting your car up against the inside wall of your garage and spinning the tires a bit just to be sure it's all the way in. Once the slides are all the way in / out, continuing to lay on the slide switch waiting on the pump relief poppet to open (usually a few hundred pounds above what it normally takes to operate the slides) doesn't seem like something this "field tech" would want to openly recommend to others.
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