Transport CanadaHigh Risk
At a glance
What can fail
The air dryer cannot remove all moisture when large volumes of air pass through quickly. In cold weather, this moisture freezes and blocks air lines downstream, causing pressure buildup in the dryer. The cartridge may separate from the dryer housing.
What the fix does
Pressure relief valves will be installed in the dryer outlet ports to prevent excessive pressure buildup.
453 vehicles affected
Transport Canada #1995102 — full official notice →Summarized — see the official notice for exact wording, dates, and contacts.