Where is the vent hole of the hydraulic cylinder located?

[BriellaMarie]

The vent hole of the hydraulic cylinder is generally located at the end of the cylinder. Hydraulic oil is the hydraulic medium used in hydraulic systems that utilize liquid pressure energy. It plays roles in energy transmission, anti-wear, system lubrication, anti-corrosion, anti-rust, and cooling in hydraulic systems. Hydraulic oil is processed from base oil, anti-oxidants, anti-wear agents, and anti-foaming agents. The steps for changing the oil are: 1. Lift the vehicle, remove the protective plate, and place a container of about 10 liters under the oil drain screw; 2. Unscrew the oil drain screw, use an air gun to blow into the oil filler port for two minutes, tighten the oil drain screw after draining, and wipe it with a tissue to check for leaks; 3. Reinstall the protective plate, lower the vehicle, and use a funnel to add oil into the filler port.