Oct 24, 2025 · Learn expert air dryer maintenance tips and troubleshooting steps. Prevent downtime, fix purge and pressure issues, and keep your fleet’s air system clean and reliable.

In this blog, we will explain what controls the air dryer purge, how it works, and some potential causes for your semi truck to keep purging air. Remember this is general information for all …

5 days ago · If your air dryer keeps purging continuously, it can cause energy loss, reduced system efficiency, and potential equipment damage. This guide helps you identify the root …

Dec 7, 2024 · The air from the governor that unloads the compressor and opens the purge valve on the dryer is leaking off somewhere.

Frequent air dryer purging usually indicates a faulty purge valve or excessive air system leaks. Inspect the purge valve diaphragm for damage and check for leaks in air lines and fittings.

4 days ago · My 2020 Cascadia with DD15 is constantly purging air going down the road despite no visible drops to 100 psi on the gauge to even be running the compressor. I checked my …

We take a look at a truck air brake system and figure out why the air dryer purges every 30 seconds.

As a best practice in preventive maintenance, Bendix recommends replacing the purge valve assembly whenever the air dryer cartridge is replaced. This will address several potential purge …

May 18, 2025 · Is it normal for the pressure relief on the air dryer to keep purging air while accelerating? If my system is trying to build air, the pressure relief on the side of the dryer will …

Feb 2, 2021 · It was purging every 10 seconds. There is a little plastic check valve with an o-ring on it behind the fitting coming from the governor, lubed it up and replaced the o-ring and it has …