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I have a wall-mounted cupboard that I bought some about 7 years ago. It has a lift-up front face which is driven by a KESSEBOHMER hinge mechanism. The face falls when lifted, apparently a common issue that can be fixed by strengthening the spring inside. Unfortunately I could not find my exact one in their catalog.

It looks like this:

enter image description here

There are + and - indications. The ones on the right, next to the screw, are there to fine-adjust the height of the mechanism - when turning the screw the whole system moves up or down a bit. I do not know what the other +/- (the one on the left) means.

I wanted to ask if someone has ever adjusted this mechanism before? The thing that worries me is that I do not see any visible way to adjust the force of the spring.

EDIT: the two holes on the left of the two screws (the lower one is also on the right of the quasi-vertical ← + - → sign) are just mounting holes for the cover that comes on top of the mechanism. They are empty.

EDIT: the piston is a breaking mechanism to slow down the falling facing, it does not take part in maintaining it lifted (I checked that on the other, correctly working hinges)

WoJ
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3 Answers3

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  1. "I do not know what the other +/- (the one on the left) means." If there is no adjustment mechanism there, perhaps part of the hinge is missing, e.g., an additional spring and tensioning screw to adjust the lift of the hinge? Or is that hole by the arrow point, in what appears to be a sliding bar, used to slide it along that track to adjust tension?
  2. On a balanced-arm lamp that drooped when a heavy LED replaced the incandescent lamp, I added an elastic band cut from automotive inner tube around the existing posts holding the spring, and achieved good balance. You might try something similar around the red and gray part that looks like a combined pneumatic delay and spring. To achieve different length rubber bands from the inner tube, cut diagonally, rather than straight across.
DrMoishe Pippik
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I've fixed it!! I had exactly the same problem with the door not holding open. The fix was to screw the small bolt at the top in a clockwise direction. This allowed the door to stay open a bit further and avoid gravity taking over. It's fiddly but pliers will do the job if you don't have the correct size spanner.

TheRustler
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Done it! Used a long handle Allen key put through hole in curved bottom bit until it goes in another hole higher up and tightened or loosened clockwise or anti clockwise

DelphicOracle
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Lesley Joyce
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