1987 Mack Rm 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: 90V034000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: December 1st, 1980
Manufactured End Date: July 1st, 1988
Date of Owner Notification: August 9th, 1990

Defect Summary:
CRACK MAY DEVELOP ON STEERING ARM THAT COULD PROGRESS AND REDUCE THE FATIGUE LIFE OF THE STEERING ARM.

Consequence Summary:
STEERING ARM COULD FAIL WITHOUT WARNING RESULTING IN LOSS OF STEERING CONTROL AND POSSIBLY A CRASH.

Corrective Summary:
INSTALL A REDESIGNED STEERING ARM.

Recall Notes:
SYSTEM: STEERING ARM.VEHICLE DESCRIPTION: HEAVY-DUTY TRUCKS.

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NHTSA Campaign Number: 88V043000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: January 1st, 1985
Manufactured End Date: January 1st, 1988
Date of Owner Notification: March 25th, 1988

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

Consequence Summary:
UNDER IMPACTS SUCH AS ROAD POTHOLES, IT COULD RESULT INSHAFT DISENGAGEMENT. THE DRIVER WOULD IMMEDIATELY LOSE STEERING CONTROLWITHOUT WARNING AND VEHICLE CRASH COULD OCCUR.

Corrective Summary:
REPLACE SHAFTS THAT MEASURE UNDER THE MINIMUM ENGAGEMENT DIMENSIONS WITH A LONGER SHAFT.

Recall Notes:
SYSTEM: STEERINGVEHICLE DESCRIPTION: TRUCKS