A pneumatic office chair has a single-acting cylinder. This is a spring that has been filled with air. When the piston is moved further out of the chamber, the air inside the chamber expands, allowing the seat to lower. If your chair keeps sinking, this means that the cylinder is no longer working.
How do you fix an office chair that won't stay up?
- Use a Hose Clamp. One of the most common solutions to fix an office chair is to use a hose clamp.
- Adjust the Chair to the Height You Want.
- Grab the Cylinder and Wrap the Hose Clamp Around It.
- Tighten the Hose Clamp.
- Test the Chair.