Macktrucks

October 18, 1988

United States

Mack Trucks, Inc.

CERTAIN ENGINE SUPPORT CASTINGS WERE PRODUCED WITH FAULTY METALLURGY AND COULD FAIL.

September 27, 1988

United States

Mack Trucks, Inc.

THE UNDERSIZED WELD ON THE REAR SUSPENSION BRACKETRY ATTACHMENT CAN CAUSE BRACKET FAILURE. United States

Mack Trucks, Inc.

FASTENERS THAT HOLD THE REAR WHEEL TO THE HUB AND DRUM ASSEMBLY MAY BE IMPROPERLY TORQUED.

September 6, 1988

United States

Mack Trucks, Inc.

SEAT TETHER BELTS MAY NOT HAVE BEEN ADJUSTED DURING ASSEMBLY.

July 28, 1988

United States

Mack Trucks, Inc.

SOME AIR BRAKE HOSE ASSEMBLIES MAY NOT COMPLY WITH BURST STRENGTH REQUIREMENTS OF FMVSS 106.

July 27, 1988

United States

Mack Trucks, Inc.

SOME OF THE NUTS/BOLTS USED TO FASTEN THE STEERING PITMAN ARM MAY LOOSEN.

July 26, 1988

United States

Mack Trucks, Inc.

POWER STEERING PUMPS MAY HAVE A RIDGE INSIDE THE ALUMINUM HOUSING WHICH COULD DETACH ITSELF FROM THE HOUSING AND BECOME WEDGED INSIDE THE RELIEF VALVE, KEEPING IT OPEN.

June 27, 1988

United States

Mack Trucks, Inc.

COMPRESSION OF FRONT SPRINGS COULD INTERFERE WITH THE 90 DEGREE CROSSOVER FITTINGS ON THE BOTTOM OF THE GEARS.

May 23, 1988

United States

Mack Trucks, Inc.

CLAMP PLATES USED BETWEEN THE DRIVE SHAFT AND CARRIER YOKES MAY CRACK AND COULD BREAK DUE TO IMPROPER HEAT TREATMENT.

March 28, 1988

United States

Mack Trucks, Inc.

SEAT BELT MOUNTING BOLTS ON THE INBOARD SIDE OF RIDERS SEAT MAY HAVE BEEN UNDERTORQUED. United States

Mack Trucks, Inc.

THE STEERING SHAFT SPLINE ENGAGEMENT IS ONLY . 52, THE RECOMMENDED ENGAGEMENT IS 2 INCHES.

March 4, 1988

United States

Mack Trucks, Inc.

SOME DEADMAN PEDALS WERE ASSEMBLED WITH INCORRECT BOLTS WHICH COULD CAUSE A MALFUNCTION WITHOUT ANYONE STEPPING ON THE PEDAL.

December 14, 1987

United States

Mack Trucks, Inc.

SOME OF BOLTS FASTENING REAR DRIVESHAFT ON REAR AXLE FLANGE MAY LOOSEN CAUSING DRIVESHAFT DISASSEMBLY. United States

Mack Trucks, Inc.

THE PITMAN ARM TO DRAG LINK ANGLE IS OUT OF PHASE.

November 23, 1987

United States

Mack Trucks, Inc.

CROSS STEERING LEVERS MAY BE IMPROPERLY HEAT TREATED AND SUBJECT TO FAIL DURING NORMAL OPERATION.

October 26, 1987

United States

Mack Trucks, Inc.

ON RIGHT HAND STEERING ARM, KEYWAY MAY BE IN THE WRONG LOCATION CAUSING A TOGGLE CONDITION TO OCCUR UNDER CERTAIN CONDITIONS.

July 15, 1987

United States

Mack Trucks, Inc.

MINIMUM AIR RESERVOIR VOLUME CAPACITY IS LESS THAN REQUIRED BY FMVSS NO. 121.

February 9, 1987

United States

Mack Trucks, Inc.

CROSSMEMBER CAN BE OVERSTRESSED AND CAN FAIL, ALLOWING THE BROKEN CROSSMEMBER TO PROTUDE ABOVE THE TOP OF THE FRAME AND INTERFERE WITH CHASSIS COMPONENTS.

May 27, 1986

United States

Mack Trucks, Inc.

AN INCORRECT STEERING SHAFT RETAINING NUT IS INSTALLED ON THE SHAFT AND CAN LOOSEN CAUSING STEERING PLAY. CONSEQUENCE OF DEFECTS: IF NUT IS NOT REPLACED, STEERING WHEEL DISENGAGEMENT COULD OCCUR CAUSING LOSS OF STEERING CONTROL AND POSSIBLY A VEHICLE CRASH. United States

Mack Trucks, Inc.

THE DRAG LINK TO PITMAN ARM TOGGLE ANGLE MAY BE GREATER THAN DESIGN CRITERIA, AND MAY CAUSE THE STEERING TO BIND. CONSEQUENCE OF DEFECT: IF TRUCK NEGOTIATES EXTREME RIGHT HAND TURN THE LEFT FRONT WHEEL DROPS INTO A DEEP HOLE, STEERING RETURN WOULD BE SLOW, WITHOUT WARNING TO OPERATOR, CREATING POTENTIAL FOR A VEHICLE…