MultiPurpose

Recalls - 1991 MACK CH

What is a recall? The National Highway Traffic Safety Administration, generally in cooperation with the vehicle manufacturer, issues recalls when a motor vehicle or item of motor vehicle equipment (including tires) does not comply with a Federal Motor Vehicle Safety Standard or when there is a safety-related defect in the vehicle or equipment. Work dictated by a recall is generally completed at no charge to the vehicle owner, regardless of whether you are the first owner or a subsequent owner. Please contact your service facilities for additional details and to confirm that this recall is relevant to your particular vehicle.

Component Description

ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN

Recall Number

93V137000

Manufacturer Recall Number

Not Available (Please See Notes)

Number of Vehicles Affected

Not Available (Please See Notes)

Manufactured From

Not Available (Please See Notes)

Manufactured To

Not Available (Please See Notes)

Defect Description

THE ENGINE COOLING FAN BLADES MAY BREAK DUE TO INADEQUATE BLADE STRENGTH AROUND THE RIVETS THAT ATTACH THE BLADES TO THE FAN SPIDER.

Defect Consequence

IF COMPLETE FRACTURE OF THE FAN BLADE OCCURS, IT COULDBE PROPELLED OUTSIDE THE FAN SHROUD, INJURING PERSON(S) IN THE VICINITY OFTHE TRUCK.

Defect Corrective Action

AN IMPROVED FAN WILL BE INSTALLED ON THESE VEHICLES.

Notes

SYSTEM: ENGINE; COOLING FAN.VEHICLE DESCRIPTION: CLASS 8 HEAVY TRUCKS EQUIPPED WITH 6 BLADED FANSMANUFACTURED BY ENGINEERED COOLING SYSTEMS, INC.


Component Description

TRAILER HITCHES:FIFTH WHEEL ASSEMBLY

Recall Number

00V019003

Manufacturer Recall Number

Not Available (Please See Notes)

Number of Vehicles Affected

Not Available (Please See Notes)

Manufactured From

Not Available (Please See Notes)

Manufactured To

Not Available (Please See Notes)

Defect Description

VEHICLE DESCRIPTION: HEAVY DUTY CLASS 8 TRUCKS EQUIPPED WITH FONTAINE FIFTH WHEEL ASSEMBLIES. THE FIFTH WHEEL MOUNTING PLATES CAN CRACK.

Defect Consequence

UNDER THE TRAILER LOADING, THE MOUNTING PLATE COULD EVENTUALLY FAIL DUE TO FATIGUE.

Defect Corrective Action

DEALERS WILL INSPECT AND REPLACE THE MOUNTING PLATES THAT ARE CRACKED.

Notes

MACK RECALL NO. SCO259. OWNER NOTIFICATION BEGAN JUNE 22, 2000. OWNER NOTIFICATION IS EXPECTED TO BEGIN OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT MACK AT 1-610-709-3011. ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-888-DASH-2-DOT (1-888-327-4236).


Component Description

SEAT BELTS:FRONT:ANCHORAGE

Recall Number

91V112000

Manufacturer Recall Number

Not Available (Please See Notes)

Number of Vehicles Affected

Not Available (Please See Notes)

Manufactured From

Not Available (Please See Notes)

Manufactured To

Not Available (Please See Notes)

Defect Description

LAP AND SHOULDER SEAT BELT ARRANGEMENT FOR FIXED (NON-SUSPENSION) SEATS DOES NOT MEET THE SEAT BELT LOADING REQUIREMENTS OF FMVSS 210. THE INBOARD CLINCH NUT IN CAB SILL, WHERE THE BUCKLE FOR THE SHOULDER AND LAP BELT IS MOUNTED, PULLED OUT OF THE SILL DURING THE TESTS. CONSEQUENCE OF DEFECT: IF SEAT BELT ANCHIRAGE FAILS, THE SEAT OCCUPANT FACES AN INCREASED RISK OF INJURY IN AN ACCIDENT OR SUDDEN STOP.

Defect Consequence

Defect Corrective Action

RELOCATE THE INBOARD SEAT BELT MOUNTING FROM TOP OF THE SILL TO THE FORWARD FLANGE OF THE SILL ON THE CAB FLOOR, AND ADD A 3MM FILLET WELD AROUND THE 2 INBOARD CLINCH NUTS.

Notes

SYSTEM: SAFETY BELT ANCHORAGES; FMVSS 210.VEHICLE DESCRIPTION: HEAVY TRUCKS.


Component Description

POWER TRAIN:DRIVELINE:CENTER SUPPORT BEARING

Recall Number

94V216000

Manufacturer Recall Number

Not Available (Please See Notes)

Number of Vehicles Affected

Not Available (Please See Notes)

Manufactured From

Not Available (Please See Notes)

Manufactured To

Not Available (Please See Notes)

Defect Description

THE DRIVESHAFT CENTER BEARING SUPPORT BRACKET CAN CRACK AND BREAK.

Defect Consequence

IF THIS HAPPENS, THE DRIVESHAFT WILL WOBBLE AND CAN SEPARATE. SEPARATION CAN RESULT IN DAMAGE TO OTHER COMPONENTS OF THE VEHICLE OR LOOSE FRAGMENTS CAN FALL ONTO THE ROADWAY PRESENTING A HAZARD TO OTHER DRIVERS.

Defect Corrective Action

DEALERS WILL REPLACE THE CENTER BEARING HANGER BRACKET.

Notes

SYSTEM: POWERTRAIN; DRIVELINE; BRACKET; SUPPORT; CENTER SHAFT. VEHICLE DESCRIPTION: CLASS 8 HEAVY TRUCKS. NOTE: IF THE VEHICLE IS PRESENTED TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND THE REMEDY IS NOT PROVIDED FREE OF CHARGE WITHIN A REASONABLE TIME OR THE REMEDY DOES NOT CORRECT THE DEFECT, CONTACT MACK TRUCKS AT 1-610-439-3011. ALSO, CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINSTRATION'S AUTO SAFETY HOTLINE AT 1-800-424-9393.


Component Description

VEHICLE SPEED CONTROL

Recall Number

94V032000

Manufacturer Recall Number

Not Available (Please See Notes)

Number of Vehicles Affected

Not Available (Please See Notes)

Manufactured From

Not Available (Please See Notes)

Manufactured To

Not Available (Please See Notes)

Defect Description

FUEL INJECTION SYSTEM RECONFIGURATION TO COMPLY WITH ENGINE EMISSION STANDARDS CAUSE HIGHER ENGINE VIBRATION LEVELS WHICH LEAD TO EARLY WEAR AND COMPLETE FAILURE OF THE SECONDARY THROTTLE RETURN MECHANISM.

Defect Consequence

IN THE EVENT THE PRIMARY THROTTLE RETURN FAILS, FAILURE OF THE SECONDARY THROTTLE RETURN SYSTEM WOULD NOT PROVIDE PROTECTION AGAINST LOSS OF THROTTLE CONTROL.

Defect Corrective Action

A NEW PRODUCTION SECONDARY THROTTLE RETURN SYSTEM CONFIGURATION WILL BE INSTALLED.

Notes

SYSTEM: FUEL; FUEL PUMP. VEHICLE DESCRIPTION: CLASS 8 TRUCKS EQUIPPED WITH E6 AND E7 ENGINES WITH ROBERT BOSCH P7100 MECHANICALLY-GOVERNED FUEL INJECTION PUMPS. NOTE: IF YOUR VEHICLE IS PRESENTED TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND THE REMEDY IS NOT PROVIDED WITHIN A REASONABLE TIME AND FREE OF CHARGE OR THE REMEDY DOES NOT CORRECT THE DEFECT OR NONCOMPLIANCE, PLEASE CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-800-424-9393.


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