1992 Mack CH recalls

NHTSA lists 5 model-level recall records for this year, make, and model. These records may apply to your vehicle; confirm your specific VIN with NHTSA or the manufacturer.

Recall records

Power train: Driveline: Center support bearing11/01/199494V216000

THE DRIVESHAFT CENTER BEARING SUPPORT BRACKET CAN CRACK AND BREAK.

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.

Remedy

DEALERS WILL REPLACE THE CENTER BEARING HANGER BRACKET.

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.

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Engine and engine cooling: Cooling system: Fan08/20/199393V137000

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

Consequence

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

Remedy

AN IMPROVED FAN WILL BE INSTALLED ON THESE VEHICLES.

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

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Trailer hitches: Fifth wheel assembly05/11/200000V019003

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

Consequence

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

Remedy

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

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).

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Trailer hitches02/16/199393V024000

THE CARRIER YOKE BOLTS WERE MANUFACTURED WITH WORN ROLLING THREAD DIES, CAUSING STRESS CONCENTRATIONS WHICH CAUSED CRACKS DURING THE QUENCHING PROCESS.

Consequence

THIS CONDITION CAN CAUSE BOLT FAILURE AND ALLOW THEDRIVELINE TO SEPARATE FROM THE CARRIER ASSEMBLY.

Remedy

REPLACE THE CARRIER YOKE BOLTS.

SYSTEM: TRAILER YOKE.VEHICLE DESCRIPTION: HEAVY TRUCKS.

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Vehicle speed control02/15/199494V032000

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.

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.

Remedy

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

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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