1988 Mack Cf Recalls

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NHTSA Campaign Number: 94V032000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: July 1st, 1987
Manufactured End Date: July 1st, 1992
Date of Owner Notification: May 27th, 1994

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

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

Recall 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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NHTSA Campaign Number: 91V080000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: March 1st, 1988
Manufactured End Date: June 1st, 1989
Date of Owner Notification: May 2nd, 1991

Defect Summary:
INCORRECT MANUFACTURE OF THE HYDROBOOST CYLINDER ALLOWS THE BALL SOCKET CLAMP TO CONTACT RIGHT SIDE STEERING LEVER ON AN EXTREME LEFT TURN AND CAUSE FLEXING OF THE CYLINDER ROD .

Consequence Summary:
THIS FLEXING CAN CAUSE SEAL FAILURE OR CYLINDER FAILUREOF THE HYDROBOOST UNIT AND RESULT IN LOSS OF STEERING CONTROL AND RESULT IN AVEHICLE ACCIDENT.

Corrective Summary:
REPLACE INCORRECTLY BUILT BOOST CYLINDERS.

Recall Notes:
SYSTEM: STEERING POWER ASSIST, HYDROBOOST ASSEMBLY.VEHICLE DESCRIPTION: CF AERIALSCOPE MODEL.

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NHTSA Campaign Number: 91V070000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: December 1st, 1967
Manufactured End Date: December 1st, 1990
Date of Owner Notification: June 23rd, 1992

Defect Summary:
STRESSES IMPOSED ON THE LEVER DURING TURNING MANEUVERS AND/OR IMPACT INCIDENTS, SUCH AS WOULD BE CAUSED BY CURBS OR ROAD SURFACE IRREGULARITY, REDUCE THE LIFE EXPECTANCY OF THE PART. THE STEERING LEVER MAY CRACK AND EVENTUALLY THE STRESSES COULD CAUSE THE STEERING LEVER TO BREAK.

Consequence Summary:
A BROKEN STEERING LEVER WILL CAUSE LOSS OF STEERINGCONTROL WITHOUT PRIOR WARNING WHICH MAY RESULT IN A VEHICLE CRASH.

Corrective Summary:
REPLACE THE DEFECTIVE STEERING ARMS.

Recall Notes:
SYSTEM: STEERING LEVERS.VEHICLE DESCRIPTION: CF MODEL FIRE CHASSIS WITH GROSS AXLE WEIGHT RATINGS OF12,000 POUNDS OR GREATER AND EQUIPPED WITH POWER STEERING.NOTE: THE SPECIFIC MACK AXLES AFFECTED ARE: FA532, FAF532, FAFW537, FAFW5372,FAFW13.5, FAW538, FAW14.3, FA604, FA6042, FAW616, FAW618, FAW617, AND FAW20.

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NHTSA Campaign Number: 90V120000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: July 1st, 1985
Manufactured End Date: July 1st, 1988
Date of Owner Notification: December 31st, 1990

Defect Summary:
WELDING DEFICIENCIES CAN CAUSE TWO-PIECE STEERING GEAR MOUNTING BRACKET TO PROGRESSIVELY SEPARATE.

Consequence Summary:
THIS COULD RESULT IN LOSS OF STEERING CONTROL, WITHOUTPRIOR WARNING, AND A VEHICLE CRASH.

Corrective Summary:
REPLACE STEERING GEAR MOUNTING BRACKETS WITH PROPERLY WELDED BRACKETS.

Recall Notes:
SYSTEM: STEERING GEAR MOUNTING BRACKET.VEHICLE DESCRIPTION: FIRE TRUCKS.

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NHTSA Campaign Number: 89V162000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: October 1st, 1987
Manufactured End Date: March 1st, 1989
Date of Owner Notification: December 20th, 1989

Defect Summary:
AIR PIPING IS INSTALLED IN A WAY THAT COULD CAUSE FRONT BRAKE HOSES TO RUB AGAINST THE BRAKE CHAMBER.

Consequence Summary:
THIS COULD EVENTUALLY RESULT IN BRAKE HOSE FAILURE. INCREASING THE STOPPING DISTANCE, WHICH COULD RESULT IN AN ACCIDENT.

Corrective Summary:
REPAIR IN A MANNER TO PREVENT FRONT BRAKE HOSE FROM RUBBING AGAINST THE BRAKE CHAMBER.

Recall Notes:
SYSTEM:FRONT BRAKE HOSE.VEHICLE DESCRIPTION:FIRE TRUCKS.