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Showing results for tags 'technic 8439 pneumatic loader'.
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Hello again Eurobricks! I got 8439 recently - brilliant set, a total challenge to build and a great end result. However, I've noticed that the pneumatic valve that controls the loader's bucket lifting arms lifts the arms in the wrong direction corresponding to the stickers on either side. When pressed to go up, the arms go down, and vice versa. I've attached all the hoses correctly, and I just have no idea what's going on! I have seen videos on YouTube where the valves seem to make up their own mind which way they go, but what's up with that? Can someone shed light on this issue, please?