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11 Active Safety Recalls

1976 Mack Ws Recall

Safety defect investigations, technical specifications, and manufacturer repair notices for Canadian owners.

11
Safety Recalls
CMVSS
Safety Standard
Transport Canada
Official Source
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Active Safety 1976 Mack Ws Recalls (11)

Safety recall notices and repair campaigns registered for the 1976 Mack Ws in Canada.

Ref #1979-081 Campaign : SC 113
1979-05-04 599 units

Not Entered

Issue Description

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.

Safety Risk

A failure of this component (not entered) may increase the risk of a crash or injury.

Corrective Action & Repair

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

Free parts & labor under Motor Vehicle Safety Act Transport Canada Open Data
Ref #1978-077 Campaign : SCO 104
1978-08-21 3 units

Not Entered

Issue Description

VEHICLES EQUIPPED WITH CUMMINS NTC - SERIES ENGINES AND FULLER RT OR SPICER SST SERIES TRANSMISSIONS. INVOLVED VEHICLES HAVE ALUMINUM ENGINE REAR SUPPORT BRACKETS WHICH MAY FAIL ALLOWING THE ENGINE AND TRANSMISSION ASSEMBLY TO DISLOCATE DOWNWARD. THIS CONDITION COULD CAUSE A LOSS OF THROTTLE CONTROL AND RESULT IN A VEHICLE CRASH. ENGINE REAR SUPPORT BRACKETS WHICH MAY FAIL ALLOWING THE ENGINE AND TRANSMISSION ASSEMBLY TO DISLOCATE DOWNWARD. THIS CONDITION COULD CAUSE A LOSS OF THROTTLE CONTROL AND RESULT IN A VEHICLE CRASH.

Safety Risk

A failure of this component (not entered) may increase the risk of a crash or injury.

Corrective Action & Repair

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

Free parts & labor under Motor Vehicle Safety Act Transport Canada Open Data
Ref #1978-001 Campaign : SC0100
1978-04-03 254 units

Not Entered

Issue Description

THE EATON MODEL 21 ANTI-WHEEL LOCK CONTROLLER MAY MALFUNCTION AND PREVENT APPLICATION OF THE BRAKE ON THE AXLE CONTROLLED BY THE DEFECTIVE CONTROLLER. A "NO BRAKE" SITUATION MAY DEVELOP WHICH WOULD AFFECT VEHICLE BRAKING CHARACTERISTICS AND MAY LEAD TO A VEHICLE CRASH.

Safety Risk

A failure of this component (not entered) may increase the risk of a crash or injury.

Corrective Action & Repair

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

Free parts & labor under Motor Vehicle Safety Act Transport Canada Open Data
Ref #1977-167 Campaign : N/D
1978-02-16 7 units

Not Entered

Issue Description

TRUCKS EQUIPPED WITH ANCHORLOCK AIR DRYERS. A DESIGN DEFICIENCY EXISTS IN THE AIR DRYER PIPING THAT CAN ALLOW MOISTURE FROM THE COMPRESSED AIR TO FREEZE ALLOWING A BUILD UP OF EXCESSIVE AIR PRESSURE THAT WOULD CAUSE THE AIR PIPING CONNECTIONS TO SEPARATE. THIS WOULD LEAD TO AN AUTOMATIC APPLICATION OF THE CHASSIS EMERGENCY SPIRNG BARKES AND TRAILER BREAKES, WITHOUT WARNING, AND POSSIBLY CAUSE A LOSS OF VEHICLE CONTROL.

Safety Risk

A failure of this component (not entered) may increase the risk of a crash or injury.

Corrective Action & Repair

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

Free parts & labor under Motor Vehicle Safety Act Transport Canada Open Data
Ref #1977-092 Campaign : N/D
1977-10-27 4 870 units

Not Entered

Issue Description

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.

Safety Risk

A failure of this component (not entered) may increase the risk of a crash or injury.

Corrective Action & Repair

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

Free parts & labor under Motor Vehicle Safety Act Transport Canada Open Data
Ref #1977-061 Campaign : N/D
1977-09-22 N/D units

Not Entered

Issue Description

TRUCKS EQUIPPED WITH FF-931 FRONT AXLES AND MOTOR WHEEL CORPORATION ALUMINUM WHEEL HUBS. MOTOR WHEEL CORPORATION HAS DETERMINED THAT SOME OF ITS HUBS ARE SUBJECT TO FAILURE FROM A CRACK NEAR THE BASE OF THE INNER BEARING CUP THAT RESULTS IN A FRACTURE BETWEEN THE INNER HUB END AND THE FLANGE PORTION OF THE HUB. CONTINUED OPERATION IN THIS CONDITION COULD CAUSE THE HUB TO SEPARATE FROM THE VEHICLE WITH THE POSSIBILITY OF A VEHICLE CRASH.

Safety Risk

A failure of this component (not entered) may increase the risk of a crash or injury.

Corrective Action & Repair

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

Free parts & labor under Motor Vehicle Safety Act Transport Canada Open Data
Ref #1977-062 Campaign : N/D
1977-09-22 62 units

Not Entered

Issue Description

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.

Safety Risk

A failure of this component (not entered) may increase the risk of a crash or injury.

Corrective Action & Repair

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

Free parts & labor under Motor Vehicle Safety Act Transport Canada Open Data
Ref #1977-012 Campaign : N/D
1977-05-10 19 units

Not Entered

Issue Description

VEHICLES EQUIPPED WITH ROCKWELL INTERNATIONAL FF931C FRONT AXLES AND S-=CAM BRAKES. THE BRAKE SPIDER MAY FAIL ALLOWING SEPARATION OF THAT PORTION THAT RETAINS THE BRAKE CAMSHAFT, BRAKE CHAMBER AND THE BRAKE CHAMBER BRACKET FROM THE FOUNDATION BRAKE ASSEMBLY. FAILURE CAN OCCUR WITHOUT WARNING AND LEAD TO BRAKE PULL OR WHEEL LOCKUP.

Safety Risk

A failure of this component (not entered) may increase the risk of a crash or injury.

Corrective Action & Repair

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

Free parts & labor under Motor Vehicle Safety Act Transport Canada Open Data
Ref #1976-163 Campaign : N/D
1977-03-09 163 units

Not Entered

Issue Description

VEHICLES BUILT FROM JANUARY 1, 1975 TO FEBRUARY 4, 1977 AND EQUIPPED WITH ROSS HFB70 SERIES POWER STEERING. THE ROSS HFB70 POWER STEERING SYSTEM IS SUSCEPTIBLE TO FAILURE AT THE INPUT SHAFT END OF THE PISTON AND WILL CAUSE THE END TOOTH OF THE PISTON TO BREAK OFF. THE BROKEN TOOTH COULD CAUSE THE STEERING GEAR TO LOCK WITH THE POSSIBILITY OF VEHICLE CRASH. FLAT-BED TRAILERS WERE PRODUCED WITHOUT THE TWO FRONT CLEARANCE LAMPS AS REQUIRED BY CMVSS 108.

Safety Risk

A failure of this component (not entered) may increase the risk of a crash or injury.

Corrective Action & Repair

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

Free parts & labor under Motor Vehicle Safety Act Transport Canada Open Data
Ref #1976-153 Campaign : N/D
1977-02-08 76 units

Not Entered

Issue Description

THE LOWER STEERING SHAFT LOWER YOKE CLMAP BOLT MAY NOT HAVE BEEN TORQUED TO SPECIFICATION DURING MANUFACTURE. THIS COULD LEAD TO DISENGAGEMENT OF THE LOWER STEERING SHAFT FROM THE STEERING GEAR RESULTING IN LOSS OF STEERING CONTROL WITHOUT WARNING TO THE DRIVER.

Safety Risk

A failure of this component (not entered) may increase the risk of a crash or injury.

Corrective Action & Repair

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

Free parts & labor under Motor Vehicle Safety Act Transport Canada Open Data
Ref #1976-128 Campaign : N/D
1976-11-17 2 units

Not Entered

Issue Description

VEHICLES EQUIPPED WITH FORGED ALUMINUM HUBS ON ROCKWELL FF931 AXLES WITH DISC WHEELS. LTHE FORGED ALUMINUM FRONT WHEEL HUBS HAVE A DESIGN DEFICIENCY IN THE BARREL BETWEEN THE INNER AND OUTER BEARINGS WHICH CAN LEAD TO CRACKING AND FAILURE OF THE HUB.

Safety Risk

A failure of this component (not entered) may increase the risk of a crash or injury.

Corrective Action & Repair

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

Free parts & labor under Motor Vehicle Safety Act Transport Canada Open Data
Vehicle Profile & Safety Standards

Vehicle Specifications & Compliance Benchmark

Official Transport Canada safety campaigns, Canadian motor vehicle safety compliance standards and live VIN specifications.

Safety Recall Coverage
11 bulletins
Transport Canada safety defect records
Safety Compliance
CMVSS / NSVAC
Motor Vehicle Safety Act standards
NRCan EnerGuide
Trim-Specific
Varies by engine, drive & transmission
VIN Specifications
14 Attributes
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All Mack Ws Model Years

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