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Recall 1981076

Not Entered · Mack · published 9 Jul 1981

1,550Vehicles affected in Canada
4Models
1979–1980Model years
Truck - Med. & H.D.Not Entered

The issue

THE BRAKE CONTROL KNOB COULD FALL OFF DUE TO THE LOCATION OF THE HOLE FOR THE RETAINING PIN BEING OFF THE CENTERLINE OF THE HOLE FOR THE VALVE PLUNGER. WHEN THE RETAINING PIN IS INSTALLED, THE MISALIGNMENT CREATES EXCESSIVE STRESS AROUND THE HOLE FOR THE PIN AND THE PLASTIC FAILS. THE LOSS OF KNOB COULD IMPAIR OPERATION OF THE HAND CONTROL BRAKE VALVE.

Description (français)

Le bouton de commande du frein peut se détacher et tomber à cause du mauvais alignement du trou de la goupille de retenue avec l'axe du trou du piston de commande. Ce mauvais alignement fait subir à la goupille une tension excessive autour du trou, et le plastique du bouton cède. La perte du bouton peut empêcher la commande manuelle de la soupape du frein.

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

Vehicles covered

Make and modelModel years
Mack F1979, 1980
Mack MC1979, 1980
Mack R1979, 1980
Mack U1979, 1980