Loss of pressure in air springs: causes, signs and checks to be carried out

Pneumatic suspensions represent one of the most used solutions in modern industrial vehicles thanks to their ability to improve comfort, stability and load management. For the system to work correctly, however, it is essential that the correct level of pressure is maintained inside the air springs.

When one occurs pressure loss in the air springs, the behavior of the vehicle can change significantly, influencing safety, driving comfort and the life of the connected components.

Quickly identifying the cause of the problem allows you to avoid more serious failures and reduce vehicle downtime.

Because pressure is key in air springs

Air springs use compressed air to support the weight of the vehicle and absorb stresses from the road.

The internal pressure allows the system to:

• maintain the correct alignment of the truck;
• adapt to load variations;
• improve driving comfort;
• increase stability;
• reduce vibrations.

When the pressure decreases abnormally, the entire suspensive system can lose effectiveness.

Symptoms of a loss of pressure

A pressure loss in the air springs it can manifest itself through various easily recognizable signs.

Among the most common we find:

• truck lowering while parked;
• non-uniform structure;
• lateral inclination of the vehicle;
• greater rigidity when driving;
• reduced comfort;
• more noticeable vibrations;
• frequent compressor interventions.

These symptoms should not be underestimated, especially in vehicles that travel many kilometers every day.

Air spring wear

One of the most frequent causes is the natural deterioration of the air spring.

As time passes, the elastomeric material that makes up the component is subjected to:

• continuous compression cycles;
• temperature variations;
• exposure to atmospheric agents;
• strong mechanical stresses.

Wear can cause micro-cracks or deterioration which favor the escape of air.

Pneumatic fittings and connections

In many cases the problem does not directly concern the air spring.

Fittings, pipes and pneumatic connections can also cause pressure losses.

Among the most frequent problems we find:

• loose fittings;
• deteriorated seals;
• damaged pipes;
• connections not perfectly sealed.

For this reason it is always advisable to check the entire pneumatic circuit.

Valves and system components

Air suspension is made up of numerous elements that work together to regulate pressure.

Any anomalies in the control valves can compromise the correct functioning of the system and cause gradual losses of pressure.

An accurate diagnosis allows you to quickly identify the component responsible for the problem.

The importance of operating conditions

The conditions of use have a significant impact on the life of air springs.

Among the factors that can accelerate wear we find:

• frequent overloads;
• incorrect weight distribution;
• particularly bumpy roads;
• intensive use;
• extreme temperatures.

Correct vehicle management helps preserve the efficiency of the entire suspension system.

Why intervene quickly

Continuing to operate a truck with a loss of pressure in the air suspension can lead to further problems.

In addition to worsening comfort and stability, the vehicle may be subject to:

• accelerated tire wear;
• greater stress on the shock absorbers;
• increase in maintenance consumption;
• reduction in operational safety.

Intervening promptly allows you to limit costs and maintain high reliability of the vehicle.

The reliability of Way Assauto air springs

In the truck sector, the quality of the components represents a determining factor in guaranteeing operational continuity and durability over time.

Way Assauto offers the aftermarket a range of air springs developed to meet the needs of spare parts dealers, distributors and industrial vehicle professionals, with particular attention to reliability, construction quality and constant performance.

A pressure loss in the air springs it should not be considered a simple inconvenience. It can directly affect the comfort, stability and safety of the truck, as well as generating additional costs related to maintenance and vehicle downtime.

Periodically checking the pneumatic system and using reliable components is the best strategy to preserve suspension performance over time.

If you are looking for air springs for truck and industrial vehicle applications, discover Way Assauto solutions and rely on a partner who has supported the aftermarket for over 120 years with components designed to face the challenges of professional mobility.