1981 Mack R Series Recalls

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NHTSA Campaign Number: 86V007000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: September 1st, 1981
Manufactured End Date: November 1st, 1984
Date of Owner Notification: June 27th, 1986

Defect Summary:
THE ACCELERATOR ROD HOLE CLEARANCE IS NOT ADEQUATE AND CAN CAUSE THE ACCELERATOR LINKAGE TO BIND. CONSEQUENCE OF DEFECT: IF BINDING OCCURS WHILE IN A FULL THROTTLE POSITION, ACCELERATOR CONTROL WOULD BE LOST WITHOUT WARNING AND AN ACCIDENT COULD OCCUR.

Corrective Summary:
ENLARGE THE ACCELERATOR ROD HOLE TO ELIMINATE INTERFERENCE WITHIN ACCELERATOR LINKAGE.

Recall Notes:
SYSTEM: ACCELERATION CONTROL LINKAGE. VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS WITH E6 ENGINES.

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NHTSA Campaign Number: 84V036000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: October 1st, 1978
Manufactured End Date: May 1st, 1982

Defect Summary:
SPRING SEAT CAN DEFORM, WHICH CAUSES A DECREASE IN THE CLAMPING FORCE IN THE SUSPENSION ASSEMBLY. LOSS OF CLAMPING FORCE MAY BRING ABOUT AXLE MISALIGNMENT OR AXLE HOUSING FAILURE.

Corrective Summary:
THE AXLE HOUSING WILL BE INSPECTED AND REPLACED, IF NECESSARY. THE SPRING SEATS WILL ALSO BE REPLACED.

Recall Notes:
VEHICLE DESCRIPTION: HEAVY TRUCKS.SYSTEM: SUSPENSION; REAR SPRING SEAT.CONSEQUENCES OF DEFECT: LOSS OF VEHICLE CONTROL COULD OCCUR WITHOUT WARNING,POSSIBLY RESULTING IN AN ACCIDENT.

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NHTSA Campaign Number: 81V155000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: August 1st, 1981
Manufactured End Date: September 1st, 1981
Date of Owner Notification: June 23rd, 1982

Defect Summary:
THE PITMAN ARM RETAINING BOLT MAY NOT HAVE BEEN TIGHTENED TO THE REQUIRED SPECIFICATIONS DUE TO A DESIGN CHANGE. INADEQUATE RETENTION OF THE BOLT TO THE OUTPUT SHAFT COULD ALLOW THE PITMAN ARM TO LOOSEN.

Corrective Summary:
THE DEALER WILL INSPECT AND, IF NECESSARY, RETORQUE THE RETAINING BOLT TO PROPER SPECIFICATIONS AT NO CHARGE.

Recall Notes:
VEHICLE DESCRIPTION: TRUCKS.SYSTEM: STEERING; PITMAN ARM RETAINING BOLTS.CONSEQUENCES OF DEFECT: SHOULD THIS LOOSE CONDITION GO UNCORRECTED, THE SPLINEDGROOVES ON THE OUTPUT SHAFT COULD WEAR SMOOTH, CAUSING LOSS OF STEERINGCONTROL, WITHOUT PRIOR WARNING, AND A VEHICLE ACCIDENT.

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NHTSA Campaign Number: 81V153000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: October 1st, 1977
Manufactured End Date: May 1st, 1981
Date of Owner Notification: June 30th, 1983

Defect Summary:
THE RIGHT HAND CLEARANCE LAMP IS OBSCURED, FROM CERTAIN ANGLES OF VISION, BY THE IN-LINE PRECLEANER AIR CLEANER CAP. THE INVOLVED VEHICLES FAIL TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT".

Corrective Summary:
DEALER WILL REPLACE THE AIR CLEANER WITH ONE OF ACCEPTABLE HEIGHT.

Recall Notes:
VEHICLE DESCRIPTION: TRUCKS.SYSTEM: LIGHTING AND COMMUNICATIONS; CLEARANCE LAMP.CONSEQUENCES OF DEFECT: IF THE CLEARANCE LAMP IS NOT ADEQUATELY VISIBLE, AVEHICLE ACCIDENT COULD OCCUR.