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Recall 1991011

Brakes · Labrie · published 11 Jan 1991

1Vehicles affected in Canada
1Models
1989–1989Model years
Heavy TrailerSafety TC

The issue

THE MIDLAND AIR BRAKE SYSTEM VALVES ON THIS VEHICLE MAY EXPERIENCE FAILURE AS A RESULT OF HYDROGEN EMBRITTLEMENT OF THE VALVE FASTENERS. VALVE FAILURE WOULD RESULT IN LOSS OF AIR PRESSURE TO THE EXTENT THAT THE EMERGENCY SPRING BRAKES WOULD APPLY AND/OR LOSS OF SERVICE BRAKE CAPABILITY WOULD OCCUR ON ONE OR MORE AXLES SERVICED BY THE DEFECTIVE VALVE. FAILURE MODE IS DEPENDENT ON THE TYPE OF VALVE WHICH FAILS (TRAILER RELAY EMERGENCY VALVE, SERVICE EMERGENCY RELAY VALVE, TRAILER SPRING BRAKE CONTROL VALVE). CORRECTION: VALVES WILL BE INSPECTED AND SUSPECT VALVES WILL BE REPLACED.

Description (français)

Les valves du circuit de freinage pneumatique Midland de ce véhicule peuvent briser à cause d'un traitement thermique à l'hydrogène qui en fragilise les pièces de fixation. Le bris des valves peut entraîner une perte de pression d'air assez importante pour causer l'application des freins de secours à ressorts et/ou une perte de puissance du freinage normal sur un ou plusieurs des essieux dépendant de la valve défectueruse. La nature de la défectuosité varie selon le type de valve (valve- relais de secours de la remorque, valve-relais de secours des freins normaux, valve de commande des freins à ressorts de la remorque).

Transport Canada Vehicle Recalls Database · Contains information licensed under the Open Government Licence – Canada · official text, unchanged

Vehicles covered

Make and modelModel years
Labrie TRAILER1989