1982 Mack Mh Recalls

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NHTSA Campaign Number: 88V147000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: January 1st, 1982
Manufactured End Date: July 1st, 1988
Date of Owner Notification: August 31st, 1988

Defect Summary:
SEAT TETHER BELTS MAY NOT HAVE BEEN ADJUSTED DURING ASSEMBLY.

Consequence Summary:
DURING AN IMPACT, DRIVER AND/OR RIDER CAN MOVE FORWARDAND POSSIBLY STRIKE THE WINDSHIELD, EVEN WHEN WEARING A SEAT BELT.

Corrective Summary:
ADJUST SEAT TETHER BELT IF NECESSARY.

Recall Notes:
SYSTEM: SEAT TETHER BELT.VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS WITH AIR SUSPENSION SEATS.

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NHTSA Campaign Number: 86V008000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: April 1st, 1982
Manufactured End Date: March 1st, 1986
Date of Owner Notification: August 14th, 1986

Defect Summary:
LEFT OR RIGHT CAB STEP MAY CRACK IN ITS WELDED AREA DUE TO FLEXING OF THE STEP DURING ENTERING AND EXITING. CONSEQUENCE OF DEFECT: AS THE CRACKS EXTEND, THE TUBULAR STEP COULD PARTIALLY COLLAPSE AND BREAK WITHOUT WARNING TO THE USER, AND COULD RESULT IN PERSONAL INJURIES.

Corrective Summary:
INSTALL A REINFORCEMENT BRACE IF NO CRACKS ARE FOUND. IN ADDITION, REPLACE STEP IF CRACKS ARE PRESENT.

Recall Notes:
SYSTEM: CAB STEP. VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS WITH SLEEPER CAB.

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NHTSA Campaign Number: 85V113000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: January 1st, 1982
Manufactured End Date: December 1st, 1984
Date of Owner Notification: February 7th, 1986

Defect Summary:
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.

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

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

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NHTSA Campaign Number: 85V051000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: April 1st, 1982
Manufactured End Date: April 1st, 1985

Defect Summary:
THE FLIP OUT STEP CLEVIS ON THE BUMPER MAY FAIL AND BREAK UNDER THE WEIGHT OF THE PERSON STANDING ON THE STEP TO SERVICE THE FRONT AREA OF THE VEHICLE. CONSEQUENCE OF DEFECT: THIS SUDDEN BREAK WILL CAUSE THE PERSON STANDING ON THE STEP TO FALL, WITHOUT WARNING, AND COULD RESULT IN INJURIES.

Corrective Summary:
REMOVE THE STEP CLEVIS AND REPLACE WITH A NEW IMPROVED CLEVIS.

Recall Notes:
VEHICLE DESCRIPTION: HEAVY DUTY ULTRALINER TRUCKS. SYSTEM: BUMPER FLIP OUT STEP CLEVIS.

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NHTSA Campaign Number: 84V140000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: May 1st, 1984
Manufactured End Date: March 1st, 1985

Defect Summary:
DUE TO IMPROPER AND INADEQUATE WELDING PRACTICES, THE FIFTH WHEEL ON THE INVOLVED VEHICLES IS DEFECTIVE. FRAME MOUNTED SUPPORTS MAY HAVE INCOMPLETE OR POOR QUALITY WELDS. THE WELDS COULD SUBSEQUENTLY FAIL ALLOWING SEPARATION OF THE TRACTOR FROM THE TRAILER.

Corrective Summary:
THE DEALER WILL INSPECT AND REMOVE THE FIFTH WHEEL AND REWELD THE MOUNTING ANGLES AT NO CHARGE TO THE OWNER.

Recall Notes:
VEHICLE DESCRIPTION: TRUCK TRACTORS.SYSTEM: STRUCTURE; FIFTH WHEEL ASSEMBLY.CONSEQUENCES OF DEFECT: IF THE TRAILER SEPARATES DURING OPERATION AN ACCIDENTAND PERSONAL INJURY COULD RESULT.

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NHTSA Campaign Number: 84V035000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: April 1st, 1982
Manufactured End Date: November 1st, 1983

Defect Summary:
A MANUFACTURING ERROR RESULTED IN THE INSTALLATION OF CARBON STEEL SPRINGS IN SOME DUAL-COMPARTMENT AIR RESERVOIR CHECK VALVES. CARBON STEEL SPRINGS ARE INADEQUATE FOR THIS APPLICATION BECAUSE THEY ARE SUBJECT TO SEVERE CORROSION AND SUBSEQUENT FAILURE OF THE CHECK VALVE.

Corrective Summary:
THE CARBON STEEL SPRING WILL BE REPLACED WITH A STAINLESS STEEL ONE.

Recall Notes:
VEHICLE DESCRIPTION: HEAVY TRUCKS.SYSTEM: SERVICE BRAKES; DUAL COMPARTMENT AIR RESERVOIR CHECK VALVE.CONSEQUENCES OF DEFECT: IF THIS CHECK VALVE FAILURE WERE COMBINED WITH ASEVERED LINE IN THE PRIMARY AIR SYSTEM, COMPLETE LOSS OF BRAKES AND POSSIBLEVEHICLE CRASH COULD OCCUR.

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NHTSA Campaign Number: 83V100000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: April 1st, 1982
Manufactured End Date: September 1st, 1983
Date of Owner Notification: September 27th, 1983

Defect Summary:
UNDER SEVERE STRAIN, A DEFECTIVE WELD JOINING THE STEERING WHEEL HUB TO THE HUB PERIMETER COULD FAIL, CAUSING THE STEERING WHEEL TO SEPARATE FROM THE VEHICLE.

Corrective Summary:
DEFECTIVE STEERING WHEELS WILL BE REPLACED AT NO CHARGE TO OWNER.

Recall Notes:
VEHICLE DESCRIPTION: TRUCKS.SYSTEM: STEERING; STEERING WHEEL HUB TO PERIMETER WELD.CONSEQUENCES OF DEFECT: SEPARATION OF THE STEERING WHEEL WOULD PROBABLY CAUSELOSS OF VEHICLE CONTROL WITHOUT WARNING, POSSIBLY RESULTING IN AN ACCIDENT.NOTE: THE TRUCK SHOULD NOT BE DRIVEN UNTIL THE DEFECTIVE STEERING WHEEL ISCORRECTED.