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Ski213

Anybody Here Know What This Is?

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I'm not sure if this is the right place to post this but it is technically part of a boat part. The part I'm asking about is the one the key is touching. There's a spring under it. You can push it down to where the piston part contacts the larger piece. There's nothing wrong with that particular part, I just have a real hard time not trying to figure out how stuff works when I've got it apart. Thought maybe someone here had dealt with hydraulics. I'm sure this little piston or valve or whatever isn't specific to the marine industry.

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You're 100% right on that man. Unfortunately there's not a service manual, parts diagram, or anything for this thing. The unit as a whole is considered an un-serviceable $400 part by its manufacturer. Although I totally understand a company trying to limit liability it irritates me that they want me to spend a pretty substantial amount of money to replace something that's only problem is a $4 o-ring.

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It looks like part of a valve body to me.  I see three others in the photo like the one the key is touching.  Two look like they should have "O" rings on them.  My guess, and it's just that, is that it has something to do with controlling the oil/fuel ratio.

 

Ace Hardware has a pretty thorough "O" ring selection.  You might find something there.  I have found "O" rings for pneumatic nailers, and other tools including the trigger on a spray gun.

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It's looks like a hydraulic valve of some sort, to what, I don't have a clue. It's no part of a boat, motor, steering helm, or hydraulic lift I've had any dealings with. It looks too large for anything involved with your average outboard or bass boat. I have to assume with that thick of a rubber seal under it, that particular one does not handle a large amount of pressure

Best place to find O-rings and seals is a hydraulic repair shop. Most keep a huge assortment of them.

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Those are pretty typical parts in a hydraulic manifold.  The little pistons are actuated by levers or solenoids and move inside the valve body to open or close passages.  My guess is this is part of a reasonably large power trim hydraulic control valve.

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Sorry I intended to put what it is part of in the first post. The larger piece in the picture is the bottom portion of a CMC jack plate actuator. One of those that is self contained with the motor, pump, and cylinder all in one assembly. So I guess the lower piece is like the valve body? That makes sense. I never figured out what actuated the valves/pistons for sure. There was a lot I couldn't see without getting further in than I wanted to. Little Allen screws all over the outside of the thing. I assume they give access to the other end of those little valves given their locations. I did hit up the hydraulic shop for the o rings. Six bucks for all of them. I figure there's a 90% chance ill still have to buy a new actuator, but it was worth a shot. It's back together and seems to be working on the bench. I really appreciate y'all's help.

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