The right way to add Air to Rear Shock. Talaria, Surron, E-Ride Pro SS, MBT, E-Bike, 6/11/2024.

There is a lot of wrong information here on YouTube about how to do this. The Air in the rear shock does not affect its performance in terms of how it supports the weight. The air is there as a component to allow the shock to function as intended by stopping the fluid from forming bubbles/cavitating. This is for Hydraulic shocks and not air shocks, but the function of the Valve is identical and therefore you want to apply air much the same way as in this video. The Valve will open once air pressure is present at higher value, it will remain open until the pressure is equalized, then the spring will close the valve. Once you remove the nozzle quickly the air pressure inside the tank will apply even more force to close it. The reason why many of these air nozzles push the valve open is to get the large volume of air faster inside large tires made for big vehicles like trucks and cars. Often times very large tires take minutes at a time to fill, while air tanks as the one in the shock only take a fraction of a second to reach over 100 PSI when using an air compressor with a large air tank and with a cutoff of 120 PSI or more.

In addition, you should remove all other valve pins from the valve bodies this way the pressure is greatest in the tank because each spring of the valves will apply some force and therefore act as a pressure reducer if it is not held open. So, the only valve that should remain closed should be the one in the air tank, and then the air pressure will force it open, with the spring forcing closed once pressure has equalized.