Safety defect investigations, technical specifications, and manufacturer repair notices for Canadian owners.
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Safety recall notices and repair campaigns registered for the 1977 Mack Dm in Canada.
THE ADJUSTABLE STEERING COLUMN REAR MOUNTING BRACKET COULD FAIL, ALLOWING THE STEERING WHEEL ASSEMBLY TO FALL ONTO THE OPERATOR'S LAP. WHILE STEERING WOULD BE FUNCTIONAL THE SURPRISE COULD CAUSE LOSS OF STEERING CONTROL.
A failure of this component (not entered) may increase the risk of a crash or injury.
Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).
TRUCKS EQUIPPED WITH MACK ENDT (B) 676, ETAZ (B) 673A AND ETAY (B) 673A ENGINES WITH AIRESEARCH TV6103 TURBO-CHARGERS. IN SOME INSTNACES OF TURBOCHARGER COMP[RESSOR WHEEL FAILURE THE CAPSCREWS RETAINING THE COMPRESSOR BACK PLATE MAY BE STRUCK BY PART OF THE COMP-RESSOR WHEEL. HTIS CAN RESULT IN THE CAPSCREWS BEING STRETCHED OR SHEARED, ALLOWING THE BACKPLATE TO DISLOCATE AND PRESSURIZED ENGINE OIL TO CONTACT THE HOT TURBOCHARGER TURBINE HOUSINGS AND/OR ENGINE EXHAUST MANIFOLD SECTIONS, THUS CREATING A POTENTIAL FOR ENGINE COMPARTMENT FIRE.
A failure of this component (not entered) may increase the risk of a crash or injury.
Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).
ANTI-WHEEL LOCK VALVES SUPPLIED BY EATON CORPORATION MAY BE EXPOSED TO ACCUMULATED CONCENTRATIONS OF FLUID CONTAMINANTS IN THE AIR BRAKE SYSTEM THAT COULD CAUSE THE PISTON TO STICK THEREBY PREVENTING ANY AIR FROM BEING DELIVERED TO THE AIR BRAKE CHAMBERS SUPPLIED BY THAT VALVE. LTHIS CONDITION WILL RESULT IN A NO BRAKE APPLICATION ON THE AFFECTED AXLE, THEREBY EXTENDING VEHICLE STOPPING DISTANCES.
A failure of this component (not entered) may increase the risk of a crash or injury.
Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).
TRUCKS EQUIPPED WITH EITHER AN SGPS47 OR SGP49 STEERING SYSTEM. AN IMPROPER PINCH BOLT AND NUT MAY HAVE BEEN USED TO CLAMP THE STEERING SHAFT TO THE STEERING GEAR INPUT SHAFT. THS NUT COULD LOOSEN CAUSIG INPUT SHAFT LOOSENESS AND SPLINE WAEAR. CONTINUED OPERATION COULD RESULT IN STEERING SHAFT SEPARATION A D LOSS OF STEERING CONTROL.
A failure of this component (not entered) may increase the risk of a crash or injury.
Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).
TRUCKS WITH MACK SW57,SW76,S38,OR S44 TANDEM AXLES. A CASTING DEFECT IN THE BOGIE SPRING INSULATOR CAP CAN ALLOW THE END OF THE REAR SPRING TO DETACH FROM THE AXLE HOUSING RESULTING IN LOSS OF VEHICLE CONTROL.
A failure of this component (not entered) may increase the risk of a crash or injury.
Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).
TRUCKS EQUIPPED WITH BENDIX ANTI-WHEEL LOCK ELECTRONIC CONTROLLERS. A DIODE FAILURE WHTHIN THE ELECTRONIC CONTROLLER MAY BLOCK AIR PRESSURE TO THE BRAKE CHAMBERS RESULTING IN A NO-BRAKE SITUATION AT THE AFFECTED WHEELS. THIS CONDITION WOULD AFFECT THE AXLE-BY-AXLE AND BOGIE ANTI-WHEEL LOCK CAPABILITY AND MAY RESULT IN A VEHICLE CRASH.
A failure of this component (not entered) may increase the risk of a crash or injury.
Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).
TRUCKS EQUIPPED WITH BOGIE (TANDEM REAR) AXLES THAT ARE EQUIPPED TRUCKS EQUIPPED WITH BOGIE (TANDEM REAR) AXLES THAT ARE EQUIPPED WITH A SINGLE ANTI-WHEEL LOCK CONTROLLER. WHEEL SENSOR WIRE FAILURES MAY CAUSE DELAYS OF UP TO TWO SECONDS IN IMPLEMENTING THE ANTI-WHEEL LOCK SYSTEM ON THE BOGIE AXLES. THIS DELAY RESULTS IN A REDUCTION OF THE VEHICLE'S FULL BRAKING CAPABILITY.
A failure of this component (not entered) may increase the risk of a crash or injury.
Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).
TRUCKS EQUIPPED WITH MACK FA AND FAW 6A6 AND 617 SERIES FRONT STEERING AXLES. THE CROSS STEERING ARMS MAY HAVE INSUFFICIENT FATIGUE LIFE IN THE NECK AREA NEAR THE BOSS FOR THE CROSS STEERING TUBE BALL JOINT CONNECTION. FAILURE OF EITHER CROSS STEERING LEVER WOULD RESULT IN A LOSS OF STEERING CONTROL TO THE RIGHT FRONT WHEEL.
A failure of this component (not entered) may increase the risk of a crash or injury.
Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).
TRUCKS EQUIPPED WITH MACK V-8 ENGINES. THE SYNFLEX-TYPE OIL PRESSURE SIGNAL LINE MKAY BE ROUTED TOO CLOSE TO THE EXHAUST MANIFOLD. EXCESSIVE HEAT COULD CAUSE THE LINE TO RUPTURE AND SPRAY OIL ONTO THE HOT EXHAUST MANIFOLD CUAISNG AN ENGINE COMPARTMENT FIRE
A failure of this component (not entered) may increase the risk of a crash or injury.
Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).
VEHICLES EQUIPPED WITH SWTL56, SW56 OR SW57 SERIES BOGIES (TANDEM AXLES). THE WELDS SECURING THE REAR AXLE SPRING INSULATOR BRACKET TO THE AXLE HOUSING ARE IMPROPERLY POSITIONED AND COULD BREAK CAUSING THE AXLE TO MOVE OUT OF POSITION RESULTING IN A LOSS OF VEHICLE CONTROL.
A failure of this component (not entered) may increase the risk of a crash or injury.
Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).
TRUCKS EQUIPPED WITH CERTAIN SEAT BELT ASSEMBLIES MANUFACTURED BY INDIANA MILLS AND MANUFACTURING INC. THE SEAT BELT ASSEMBLIES, STYLE NO. IMM-385 AND B1000R-P, PERFORMED MARGINALLY DURING LOAD REQUIREMENT TESTS IN RECENT U.S. F.M.V.S.S. 209 COMPLIANCE TESTS. TESTING SHOWED THAT THE BELT ANCHOR COULD SLIP OVER THE HOLD-DOWN NUT OR THE ANCHOR COULD SEPARATE INTO TWO PIECES. ONLY ANCHORAGES MADE OF MAXI-FORM 80 MATERIAL ARE INVOLVED.
A failure of this component (not entered) may increase the risk of a crash or injury.
Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).
TRUCKS EQUIPPED WITH MACK 6 CYLINDER ENGINES AND FLEXIBLE BLADE ENGINE COOLING FANS. THE FLEXIBLE BLADE FANS MAY DEVELOP FATIGUE CRACKS IN THE LAMINATED STIFFENER. CONTINUED ENGINE OPERATION COULD CAUSE A PIECE OF THE STIFFENER TO BREAK OFF AND BE PROPELLED OUTSIDE OF THE FAN SHROUD. A PROPELLED FRAGMENT COULD CAUSE INJURY TO SERVICE PERSONNEL IN THE VICINITY OF AN OPERATING ENGINE.
A failure of this component (not entered) may increase the risk of a crash or injury.
Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).
TRUCKS EQUIPPED WITH FL-931 FRONT AXLES WITH DISC WHEELS AND ROCKWELL INTERNATIONAL ALUMINUM FRONT WHEEL HUBS. ROCKWELL INTERNATIONAL HAS DETERMINED THAT A DEFICIENCY EXISTS IN ITS 333-P-2304 FORGED ALUMINUM FRONT WHEEL HUBS (PART NO. 333-N-2302) IN THE BARREL SECTION BETWEEN THE INNER AND OUTER WHEEL BEARING WHICH MAY RESULT IN CRACKS. CONTINUED OPERATION IN THIS CONDITION COULD CAUSE THE HUB TO SEPARATE FROM THE VEHICLE WITH THE POSSIBILITY OF A VEHICLE CRASH.
A failure of this component (not entered) may increase the risk of a crash or injury.
Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).
TRUCKS EQUIPPED WITH DAYTON-WALTHER FRONT WHEELS AND MACK FA617C OR FAW617 FRONT AXLES. THE DAYTON-WALTHER FRONT WHEEL STUDS WERE NOT PROPERLY HEAT TREATED AND ARE SUBJECT TO CRACKING. A STUD CRACK WOULD RESULT IN WHEEL WOBBLE AND IMPAIR VEHICLE HANDLING.
A failure of this component (not entered) may increase the risk of a crash or injury.
Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).
Official Transport Canada safety campaigns, Canadian motor vehicle safety compliance standards and live VIN specifications.
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