2000 Mack CH

ON CERTAIN CHASSIS BUILT WITH LNG ENGINES, THE NEXGEN LNG TANK'S PRIMARY AND SECONDARY RELIEF VALVES COULD FAIL TO OPEN AND RELIEVE TANK PRESSURE.

ON SOME HEAVY DUTY CLASS 8 VEHICLES EQUIPPED WITH ARVINMERITOR AXLE ASSEMBLIES WHICH MAY HAVE BEEN MANUFACTURED WITH TRW MODEL 20EDL BALL SOCKETS, THE TIE ROD BALL-SOCKET BEARINGS HAVE A BELOW SPECIFICATION CASE DEPTH AND/OR HARDNESS WHICH CAN LEAD TO PREMATURE WEAR OUT OF THE SOCKET IN SOME APPLICATIONS.

ON CERTAIN CLASS 8 HEAVY DUTY TRUCKS EQUIPPED WITH R. H. SHEPPARD M90 STEERING GEARS, AN INCORRECT HOSE WAS USED FOR THE HIGH-PRESSURE LINE BETWEEN THE POWER STEERING PUMP AND THE STEERING GEAR. THE HOSE IS RATED AT 2000 PSI, WHILE IT SHOULD BE RATED AT 3000 PSI.

VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH TRW TIE ROD ENDS ON CERTAIN DANA/SPICER AXLES (E12001) AND MACK AXLES THROUGH DANA HEAVY AXLE (FAWL 12). THE TIE ROD AND DRAG LINK BALL STUD ENDS CONTAIN BEARINGS THAT ARE BELOW THE SPECIFIED CASE DEPTH AND/OR HARDNESS.

VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH CERTAIN MERITOR-WABCO BRAKE SYSTEM TWO AND FOUR PORT RELAY VALVES. THE VALVE MAY STICK OPEN WHEN A HIGH-PRESSURE APPLICATION IS RELEASED.

VEHICLE DESCRIPTION: CLASS 8 TRUCKS EQUIPPED WITH FELSTED ELECTRONIC ACCELERATOR PEDALS. THE RETURN SPRINGS CAN BREAK ON THE ACCELERATOR PEDALS THAT ARE EQUIPPED WITH STAINLESS STEEL OR ELECTROPLATED WIRE RETURN SPRINGS.

VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS BUILT WITH BENDIX AIR ABS WITH AN EC-17 1030R ELECTRONIC CONTROL UNIT (ECU), THERE HAVE BEEN REPORTS OF UNWANTED ABS ACTIVATION AT LOW SPEEDS CAUSED BY 1) CHAFED ABS WHEEL SPEED SENSOR WIRES ON ROTATING PARTS OR 2) A DAMAGED COMPONENT AT THE WHEEL END THAT GENERATES A CERTAIN TYPE OF ERRATIC SENSOR SIGNAL.