STEERING:LINKAGES:DRAG:LINK:CONNECTIONJul 1986
THE RUBBER THAT ENCASES BALL STUD AND SOCKET JOINT (CONNECTS STEERING DRAG LINK AND PITMAN ARM) MAY DETERIORATE, CAUSING METAL TO METAL CONTACT, AND MAY EVENTUALLY RESULT IN COMPLETE SEPARATION. CONSEQUENCE OF DEFECT: COMPLETE SEPARATION OF THE DRAG LINK TO PITMAN ARM CONNECTION RESULTS IN LOSS OF STEERING CONTROL WHICH MAY LEAD TO AN ACCIDENT.
Remedy: INSTALL NEW DRAG LINK ASSEMBLIES WITH STEEL BALL AND SOCKET JOINTS AT THE PITMAN ARM CONNECTIONS.
FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:MOUNTINGJul 1987
FUEL LEAK AT THE TOP OF THE FRONT FUEL TANK IN THE AREA OF THE VAPOR VALVE GROMMET. GROMMET MAY SPLIT DUE TO COMPRESSIVE LOAD WHEN INSTALLED IN THE FUEL TANK.
Remedy: INSTALLATION OF A NEWLY DESIGNED VAPOR VALVE GROMMET.
FUEL SYSTEM, DIESELMay 1985
WHEN FRONTALLY IMPACTED INTO A FIXED BARRIER AT 30 MPH, AS SPECIFIED IN FEDERAL MOTOR VEHICLE SAFETY STANDARD (FMVSS) NO. 301, THE LEFT FRAME RAILS OF SUCH VEHICLES MAY DISPLACE INBOARD, PINCHING THE FUEL/WATER SEPARATOR CANISTER BETWEEN THE FRAME RAIL AND ENGINE SUFFICIENTLY TO DISPLACE THE FUEL/WATER SEPARATOR DRAIN ROD, ALLOWING THE CONTENTS OF THE CANISTER TO DRAIN. CONSEQUENCE OF DEFECT: FUEL LEAK DURING OR AFTER A CRASH INCREASES THE POSSIBILITY OF A FIRE.
Remedy: INSTALL A CANISTER SHIELD, A REVISED DESIGN DRAIN ROD SHIELD, AND MODIFY FUEL/WATER SEPARATOR MOUNTING BRACKET.
ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROLSep 1987
VEHICLES ARE SUBJECT TO EXCESSIVE UNDERHOOD TEMPERATURES AND FUEL SYSTEM PRESSURES IN SEVERE DUTY APPLICATIONS.
Remedy: INSTALL MODIFICATION KITS TO MINIMIZE POSSIBILITY OF FUEL EXPULSION AND TO SHIELD UNDERBODY COMPONENTS FROM EXHAUST SYSTEM HEAT.
ELECTRICAL SYSTEM:WIRINGApr 1989
NYLON TIES THAT SUPPORT THE MAIN WIRING HARNESS TO THE CHASSIS COULD WEAR AND BREAK DUE TO EXCESSIVE VIBRATION. THUS, WIRING HARNESS COULD FALL ON ENGINE COMPONENTS AND SHORT CIRCUIT.
Remedy: INSTALL RETROFIT RIT OF PLASTIC-COATED METAL CLAMPS, LOOM FOR POSITIVE BATTERY CABLES AND RE-ROUTE WIRING.
ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROLJul 1987
EXPULSION OF FUEL DUE TO OVERPRESSURIZATION.
Remedy: MODIFICATION OF THE BASE FUEL VENTING AND EMISSION CONTROL SYSTEM TO REDUCE OPERATING TEMPERATURES AND FUEL SYSTEM PRESSURES.
POWER TRAIN:DRIVELINE:DRIVESHAFTJul 1986
COMPOSITE GRAPHITE DRIVESHAFTS ARE SUBJECT TO OVERHEATING WHILE IDLING, WHICH MAY RESULT IN THE DRIVESHAFT TWISTING AND SHORTENING CAUSING THE SLIP YOKE TO DISCONNECT FROM THE TRANSMISSION. CONSEQUENCE OF DEFECT: IF THE DRIVESHAFT DISCONNECTS FROM THE TRANSMISSION THE VEHICLE WOULD BECOME IMMOBILE WITHOUT WARNING.
Remedy: INSTALL METAL DRIVESHAFT.
