Recalls › 81V088000

NHTSA recall 81V088000

Service brakes, air › Controls › Hand control/valve

Mack F Series and 3 more

Reported Jul 8, 198110,000 vehicles affectedMACK TRUCKS, INCORPORATEDBuilt Jul 1, 1979 – Jan 1, 1980

The defect

The retaining pin for the brake control knob has been misaligned (off the center line of the valve plunger hole). This causes the knob to be overstressed at the retaining pin hole area causing it to separate from the valve.

The remedy

The holes will be retooled to provide correct alignment and plastic knobs will be replaced by knobs of stronger material having metal reinforcements.

Official recall at NHTSA ↗

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Vehicles in this recall

Mack F Series
19791980
Mack MC Series
19791980
Mack R Series
19791980
Mack U Series
19791980

Notes

Vehicle description: trucks equipped with brake control knobs.system: service brakes; knob retaining pin.consequences of defect: with the knob broken off, the control valve wouldbecome difficult or impossible to operate. One or a combination of brakeapplications would not be possible and the vehicle could be parked in an unsafecondition. An accident and personal injury could result.