Westank · Canada · High
Westank Semi-Trailer: Brakes
Affects Westank Semi-Trailer · 1988–1989 — about 80 vehicles.
The hazard
THE MIDLAND BRAKE VALVES INSTALLED ON THESE UNITS MAY EXPERIENCE HYDROGEN EMBRITTLEMENT AND POSSIBLE FRACTURING OF THE SCREWS THAT HOLD THE VALVE SECTIONS TOGETHER RESULTING IN LOSS OF AIR PRESSURE. LOSS OF AIR PRESSURE COULD CAUSE FULL OR PARTIAL LOSS OF SERVICE BRAKES, INCREASED STOPPING DISTANCES AND A POSSIBLE APPLICATION OF THE TRAILER SPRING BRAKES. APPLICATION OF THE EMERGENCY SPRING BRAKES COULD RESULT IN LOSS OF CONTROL. CORRECTION: DEFECTIVE VALVES WILL BE REPLACED.
What to do
Contact your dealer; the remedy details were not included in the filing.
Critical — crash/injury risk now
High — injury risk; see remedy
Moderate — fix at next service
Low — minor / informational