What type of maintenance practice can prevent air leaks in pneumatic systems?

Tightening connections and seals is an essential maintenance practice that directly addresses the prevention of air leaks in pneumatic systems. Pneumatic systems use compressed air to operate, and even minor leaks at connection points, fittings, or seals can lead to significant air loss, decreased efficiency, and increased operating costs. Over time, connections may loosen due to vibration, thermal expansion, or normal wear, making regular tightening a proactive measure to ensure a leak-free operation.

In contrast, while regular lubrication of components is critical for ensuring smooth functioning and reducing friction, it does not directly target the integrity of connections where leaks may occur. Improving electrical connections relates more to electronic control systems rather than the pneumatic aspects, and increasing air pressure can temporarily mask leaks but does not solve the underlying issue, which could lead to other problems within the system. Therefore, maintaining tight connections and ensuring seals are secure is the most effective practice for preventing air leaks in pneumatic systems.