Known Recalls

Recall campaign · NHTSA 85V113000

Service brakes, air

MACK TRUCKS, INCORPORATED filed this campaign with NHTSA on 1985-09-17.

Recall campaignNHTSA 85V113000

Service brakes, air

Component
Service brakes, air
Manufacturer
MACK TRUCKS, INCORPORATED
Vehicles affected
5,020
Reported to NHTSA
1985-09-17
Owners notified
1986-02-07

Defect description

THE DUAL DOUBLE CHECK VALVE MAY NOT RELEASE THE PROPER AIR VOLUME TO THE BRAKE SYSTEM, CAUSING A SLIGHT TIMING DELAY BETWEEN THE TRACTOR AND THE TRAILER BRAKE SYSTEM. CONSEQUENCES OF DEFECT: IF THE BRAKES ARE SUDDENLY APPLIED, THE TRAILER COULD JACKKNIFE WITHOUT WARNING TO THE OPERATOR, WHICH COULD RESULT IN A VEHICLE CRASH.

Manufacturer remedy

INSTALL TWO NEW SLEEVES IN THE DUAL DOUBLE CHECK VALVE WHICH WILL INCREASE AIR FLOW.

Notes

VEHICLE DESCRIPTION: HEAVY DUTY TRACTOR TRAILER COMBINATIONS. SYSTEM: BRAKES, TRACTOR TO TRAILER.

Scope of coverage

4 model years across 1 models.

ModelYears on record
MACK MH1985 1984 1983 1982

Safety recall repairs are provided free of charge by franchised dealers, regardless of vehicle age or mileage. This page displays aggregated data for the model year. To check recall status for a specific vehicle, search its VIN at nhtsa.gov.