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Air Ride Suspension Components

Air ride was first used in 1909, but it was quickly eliminated as the systems had a tendency to leak. Properly functioning air ride systems were a common feature in luxury automobiles in the late 1950s. These systems use several components to change the ride quality and height.

Compressor

The air compressor is typically hidden behind the rear seat or in the trunk. The compressor uses the 12 volt power to run an internal piston and build air pressure. This air is used to adjust the ride height or quality.

Pressure Switch

The pressure switch is an integral part of keeping this system operating properly. This pressure switch measures the pounds per square inch (psi) in the system and turns the compressor on and off as needed.

Air Bags

The air bags are underneath the vehicle and connected to the suspension. The air bags are rubber bags that fill with air provided by the compressor. The bags perform a few functions: ride height adjustment and ride style. The bags raise the vehicle by inflating and lower the vehicle by deflating.

Lines

The air lines in this system transfer air from the compressor to the air bags. These lines are typically rubber with braided steel covers.

Adjustment Switch

Some trucks and SUVs have a switch inside the cabin to adjust the system. The switch is designed to raise and lower the vehicle at the drivers command.

Disabling Switch

Some vehicles, Ford, Lincoln and Mercury primarily, have automatic adjusting shocks that work whether the vehicle is off or on. When you lift these vehicles, for any reason, the system senses the change in pressure and begins inflating the air bag. When this happens, it can cause the system to blow a hole in the air bag. This is why the disabling switch was put on these vehicles. This switch is typically in the trunk.