EXTERIOR LIGHTING:TURN SIGNAL:SWITCH
VEHICLE DESCRIPTION: HEAVY DUTY TRUCK. THE SHOULDER BOLT WHICH HOLDS THE GROTE TURN SIGNAL SWITCH CASE AND COMPONENTS TOGETHER CAN LOOSEN RESULTING IN THE TURN SIGNAL MALFUNCTIONING.
Remedy: DEALERS WILL INSPECT THESE VEHICLES AND TIGHTEN ANY LOOSE BOLTS AND IN THE TURN SIGNAL SWITCH WITHIN 2 YEARS FROM THE DATE OF THE RECALL NOTIFICATION LETTER. THE SHOULDER BOLT WILL BE REMOVED, CLEANED, AND REINSTALLED WITH LOCTITE. OWNERS CAN ALSO REQUEST LOCTITE AND REPAIR INSTRUCTIONS SO THEY CAN FIX THE VEHICLES THEMSELVES.
77,000 vehicles affected
ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH HORTON FAN DRIVES. THE FAN DRIVE CONTROL SYSTEM WAS RECONFIGURED WHICH RESULTED IN A SIGNIFICANT INCREASE IN THE DEMAND FOR FAN ACTIVATION AND ASSOCIATED STRESS TO ELECTRICAL AND MECHANICAL COMPONENTS. VARIOUS COMPONENT FAILURE MODELS, COMBINED WITH CHARACTERISTICS OF THE FAN CLUTCH AND ITS BEARINGS, CAN CAUSE FAN CLUTCH BEARINGS TO FAIL PREMATURELY AND RESULT IN A LOCKED FAN.
Remedy: DEALERS WILL REPLACE THE FAN CLUTCH DRIVE DISC WITH ONE THAT INCORPORATES A THERMALLY ACTIVATED PRESSURE RELIEF.
27,500 vehicles affected
SERVICE BRAKES, AIR:SUPPLY:HOSES, LINES/PIPING, AND FITTINGS
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 OVER PRESSURIZED CAUSING THE AIR DRYER CARTRIDGE TO SEPARATE FROM THE MOUNTING BASE.
Remedy: 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.
18,500 vehicles affected
POWER TRAIN:DRIVELINE:UNIVERSAL JOINT
THE DRIVELINE U-JOINTS EXHIBIT EXCESSIVE RATES OF FAILURE AT LOW MILEAGES AND MAY CAUSE SEPARATION OF THE INTERAXLE DRIVELINE.
Remedy: FREIGHTLINER DEALERS WILL REMOVE AND REPLACE THE ROCKWELL INTERAXLE U-JOINTS WITH U-JOINTS OF A DIFFERENT DESIGN.
11,000 vehicles affected
VISIBILITY:WINDSHIELD WIPER/WASHER:LINKAGES
CONTACT INTERFERENCE BETWEEN THE WINDSHIELD WIPER LINKAGE AND THE MOTOR OUTPUT SHAFT NUT CAUSES LINKAGE SEPARATION, RESULTING IN FAILURE OF THE SYSTEM.
Remedy: REMOVE AND REPLACE THE WINDSHIELD WIPER LINKAGE WITH A REDESIGNED LINKAGE THAT PROVIDES ADDITIONAL CLEARANCE WITH THE WIPER MOTOR OUTPUT SHAFT.
505 vehicles affected