1976 Mack Rd Recalls

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NHTSA Campaign Number: 79V134000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: June 1st, 1974
Manufactured End Date: March 1st, 1978
Date of Owner Notification: November 10th, 1979

Defect Summary:
IN THE INVOLVED TRUCKS IT IS POSSIBLE THE ADJUSTABLE STEERING COLUMN REAR MOUNTING BRACKET COULD FAIL, ALLOWING STEERING WHEEL ASSEMBLY TO FALL DOWN ONTO THE OPERATOR"S LAP.

Corrective Summary:
DEALER WILL INSTALL AN ADDITIONAL BRACKET IN THIS AREA TO PREVENT THE STEERING WHEEL FROM DISLOCATING IN THE EVENT OF A BRACKET FAILURE.

Recall Notes:
VEHICLE DESCRIPTION: TRUCKS.SYSTEM: STEERING ASSEMBLY; STEERING WHEEL AND COLUMN.CONSEQUENCES OF DEFECT: WHILE STEERING WOULD REMAIN FUNCTIONAL IN THISCONDITION, THE ELEMENT OF SURPRISE TO OPERATOR COULD CAUSE LOSS OF VEHICLECONTROL AND AN ACCIDENT.

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NHTSA Campaign Number: 78V068000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: October 1st, 1974
Manufactured End Date: March 1st, 1976
Date of Owner Notification: September 1st, 1978

Defect Summary:
AN AXLE "NO BRAKE" CONDITION COULD RESULT FROM AN EATON CONTROLLER INTERNAL ELECTRICAL MALFUNCTION. THIS CONDITION MAY CAUSE THE ANTI-WHEEL LOCK VALVE SOLENOID TO BE CONTINUOUSLY ENERGIZED AND PREVENT THE BRAKES FROM BEING APPLIED ON ONE OF THE AXLES. AS A RESULT, THE ANTI-WHEEL LOCK WARNING LAMP IS NOT ACTIVATED.

Corrective Summary:
THE DEALER WILL INSPECT AND, IF NECESSARY, REPLACE THE ANTI-WHEEL LOCK CONTROLLER WITHOUT CHARGE TO OWNER.

Recall Notes:
VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH EATON 21 ANTI-LOCK CONTROLLERS.SYSTEM: SERVICE BRAKES; ANTI-WHEEL LOCK SOLENOID.CONSEQUENCES OF DEFECT: LOSS OF BRAKES ON ANY ONE AXLE WILL RESULT IN EXTENDEDVEHICLE STOPPING DISTANCES, WHICH COULD LEAD TO A VEHICLE ACCIDENT.

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NHTSA Campaign Number: 78V032000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: July 1st, 1976
Manufactured End Date: December 1st, 1977
Date of Owner Notification: October 26th, 1978

Defect Summary:
THE SYNFLEX-TYPE OIL PRESSURE SIGNAL LINE MAY HAVE BEEN ROUTED TOO CLOSE TO THE EXHAUST MANIFOLD. EXCESSIVE HEAT MAY CAUSE THE LINE TO RUPTURE, AND OIL LEAKAGE MAY OCCUR.

Corrective Summary:
THE DEALER WILL REROUTE THE OIL PRESSURE SIGNAL LINE TO ELIMINATE POTENTIAL FIRE HAZARD, WITHOUT CHARGE TO OWNER.

Recall Notes:
VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH V-8 ENGINES.SYSTEM: ENGINE; OIL PRESSURE SIGNAL LINE.CONSEQUENCES OF DEFECT: IF OIL IS SPRAYED ONTO THE HOT EXHAUST MANIFOLD, AVEHICLE FIRE AND PERSONAL INJURY TO OCCUPANTS COULD RESULT.

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NHTSA Campaign Number: 78V172000
Manufacturer: Mack Trucks, Inc.
Date of Owner Notification: February 22nd, 1979

Defect Summary:
THE EXISTING CROSS STEERING ARMS MAY HAVE INSUFFICIENT FATIGUE LIFE IN THE NECK AREA. THIS IS NEAR THE BOSS FOR THE CROSS STEERING TUBE BALL JOINT CONNECTION. FAILURE OF EITHER OF THE CROSS STEERING LEVERS COULD LEAD TO LOSS OF STEERING CONTROL OF THE RIGHT FRONT WHEEL.

Corrective Summary:
THE DEALER WILL INSPECT AND, IF NECESSARY, INSTALL CROSS STEERING ARMS OF IMPROVED DESIGN AND GREATER STRENGTH.

Recall Notes:
VEHICLE DESCRIPTION: TRUCK TRACTORS.SYSTEM: STEERING; STEERING ARM.CONSEQUENCES OF DEFECT: LOSS OF STEERING CONTROL COULD LEAD TO LOSS OF VEHICLECONTROL AND AN ACCIDENT.

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NHTSA Campaign Number: 77V173000
Manufacturer: Mack Trucks, Inc.
Date of Owner Notification: March 23rd, 1978

Defect Summary:
THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.

Corrective Summary:
DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.

Recall Notes:
VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.