1993 Mack Rb Recalls

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NHTSA Campaign Number: 95E017001
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: April 1st, 1993
Manufactured End Date: April 1st, 1993

Defect Summary:
THESE WHEELS ARE COMPOSED OF 2 PIECES - A DISC AND A RIM WHICH ARE NORMALLY WELDED TOGETHER. THESE WHEELS LACK THE SPECIFIED FILLET WELDS.

Consequence Summary:
IF WHEEL SEPARATION OCCURS WHILE THE VEHICLE IS INMOTION, BOTH STEERING AND BRAKING COULD BE AFFECTED RESULTING IN A VEHICLECRASH.

Corrective Summary:
DEALERS WILL INSPECT THE MANUFACTURING CODES STAMPED ON EACH WHEEL AND IF A WHEEL FALLS WITHIN THE SPECIFIED DATE CODE RANGE, THE DEALER WILL REPLACE THAT WHEEL.

Recall Notes:
SYSTEM: WHEELS.VEHICLE DESCRIPTION: HEAVY DUTY CLASS 8 TRUCKS EQUIPPED WITH 22.5 X 8.25,15" DROP CENTER, ONE-PIECE, TUBELESS DUAL WHEELS MANUFACTURED BY ACCURIDE.NOTE: IF YOUR VEHICLE IS PRESENTED TO AN AUTHORIZED DEALER ON AN AGREED UPONSERVICE DATE AND THE REMEDY IS NOT PROVIDED FREE OF CHARGE WITHIN A REASONABLETIME, PLEASE CONTACT MACK AT 1-610-709-3011 OR ACCURIDE AT 1-502-826-5000.ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTOSAFETY HOTLINE AT 1-800-424-9393.

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NHTSA Campaign Number: 95E003010
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: October 1st, 1992
Manufactured End Date: March 1st, 1995

Defect Summary:
AIR SYSTEM BLOCKAGE IN THE AIR DRYER OCCURS DEGRADING THE MOISTURE REMOVING CAPABILITIES OF THE DRYER WHEN THE VEHICLE IS OPERATED IN A COLD ENVIRONMENT AND MOISTURE ACCUMULATES AND FREEZES IN THE AIR DRYER OR IN THE LINE BETWEEN THE DRYER AND THE AIR SYSTEM RESERVOIR. THE AIR DRYER CAN BECOME OVERPRESSURIZED CAUSING THE AIR DRYER CARTRIDGE TO SEPARATE FROM THE MOUNTING BASE.

Consequence Summary:
IF THE AIR DRYER SEPARATES FROM THE BASE, THE CARTRIDGE CAN SEPARATE SUFFICIENTLY ENOUGH TO CAUSE PERSONAL INJURY OR PROPERTY DAMAGE.

Corrective Summary:
DEALERS WILL EQUIP AIR SYSTEMS WITH A PRESSURE RELIEF VALVE TO BE LOCATED BETWEEN THE COMPRESSOR AND THE AIR DRYER. THIS PRESSURE RELIEF VALVE IS INTENDED TO VENT IF EXCESSIVE PRESSURE DEVELOPS IN THE AIR DRYER.

Recall Notes:
SYSTEM: BRAKES; AIR DRYER. VEHICLE DESCRIPTION: HEAVY DUTY CLASS 8 TRUCKS EQUIPPED WITH ROCKWELL WABCO SYSTEM SAVER "1000" OR SYSTEM SAVER "TWIN" AIR DRYER. NOTE: IF YOUR 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, CONTACT MACK AT 1-610-709-3011.ALSO CONTACT THE NATIONAL HIGHWAYTRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-800-424-9393.

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NHTSA Campaign Number: 93V024000
Manufacturer: Mack Trucks, Inc.
Date of Owner Notification: March 24th, 1993

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

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

Corrective Summary:
REPLACE THE CARRIER YOKE BOLTS.

Recall Notes:
SYSTEM: TRAILER YOKE.VEHICLE DESCRIPTION: HEAVY TRUCKS.