Rebuilding the lift mechanism is a two part process.
Fix computer chair air pump.
The majority of office chairs allow you to adjust their height through the use of a pneumatic cylinder.
Revive your chair fix your sinking office chair by replacing the cylinder instead of spending money on a brand new computer chair.
A hydraulic seat lift uses an incompressible liquid like an oil to propel the seat upward while a pneumatic chair uses compressed air in both cases it s the force of the internal pressure of the fluid that pushes the chair upward when the lift lever is pushed into the correct.
You can buy a replacement cylinder to restore full function to your chair but this is nearly as expensive as buying a.
Office chairs use a pneumatic cylinder that controls the height of the chair through pressurized air.
Some gas cylinders naturally stop working correctly over time.
The cylinder on most chairs fails within a few years typically because the seals are too damaged to maintain pressure.
The hose clamp is placed around the cylinder piston at a desired height and acts as a stop.
If you weigh more than that ask about chairs with higher ratings.
You may have a chair for more than 10 years and suddenly the gas cylinder begins.
This option does not actually repair the office chair but can stop your chair from temporarily sinking.
In order for this method to work the hose clamp must be size 20 or 13 16 1 3 4 diameter.
The pressure of the gas in the cylinder pushes against your weight as you sit and if you release some of the pressure it will drop farther down as you sit allowing you to lower the chair.
Hydraulic and pneumatic chairs both use the same principles to move the chair seat but the mechanism is different.
If the lift mechanism in your office chair needs repair but the upholstery portion is still in good shape don t toss the chair.
You may have to consider special ordering a chair.
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