Long time has passed to reply to this thread, but I believe I have the same pump as rnrhunter and am hoping he will see and understand this - I have a 2002 Montana with a LR slide stuck out. The first thing the Dewald hydraulic manual says is if the slide starts to move and stops check the fluid. I just cannot understand how you do that. Mine does not look anything like the picture they show. How do you check it?
There is a big textured knob on the top right that says it is a (4) "breather cap". There are two knob-y cap-type things on the front left side above the IN/OUT button - one is 6-sided gold and one is silver and mostly round with a flat-sided bottom. On top there are at least 6 holey things; two of them have black lines attached that go in two directions, I assume those are the hydraulic lines. (There are two slides - the bedroom retracted fine and the LR one hung up after 3 inches and wouldn't move either direction although the motor was still running).
So...how do you "check" the fluid? Maybe their drawing is not the front view but the top down view - but they say "1. leave the red plastic cap in Port "B" (rear port)" - and I have no red plastic cap. I have fittings and lines front and back on what I'm guessing is an aluminum body. So....do you disconnect the fittings and lines first? are you then pulling the whole cylinder apart? That's what the directions sound like. "Fill tank to within 1/2" of the top; extend the cylinder NO MORE THAN 1 FT. Refill, extend, etc.") I have never been so baffled by directions manufactured in the states. There is certainly no sign it has leaked out - there, anyway, but it's been sitting like that for -4.5 years (yeah, a long time and I have never thought to just move it to exercise it).
PS - The manual says "use any type automatic transmission fluid as directed on the sticker, you can mix with hydraulic fluids with no adverse effects". FWIW.
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