Paccar

May 13, 1992

United States

PACCAR Incorporated

A CRACK IN THE DIE CAST ALUMINUM HOUSING OF THE BRAKE CHAMBER CAUSES A LOSS OF AIR PRESSURE IN THE CHAMBER. LOSS OF AIR PRESSURE CAUSES THE SPRING BRAKES TO BE APPLIED.

December 3, 1991

United States

PACCAR Incorporated

TRW SUPPLIED POWER STEERING GEARS WITH NON-HEAT-TREATED WORM SCREWS. THE STEERING GEARS WITHOUT HEAT TREATED WORM SCREWS CAN LOCK UP IN TIGHT TURNING MANEUVERS.

June 10, 1991

United States

PACCAR Incorporated

SPRAGUE WIPER ASSEMBLY PIVOT CAN SEIZE DUE TO GALVANIC CORROSION BETWEEN THE ZINC-PLATED STEEL SHAFT AND THE BRONZE BUSHINGS.

April 18, 1991

United States

PACCAR Incorporated

THE ENGINE FAN MAY EXPERIENCE A RESONANT FREQUENCY CAUSING PREMATURE FAN FAILURE, AND SEPARATION FROM THE ENGINE.

March 14, 1991

United States

PACCAR Incorporated

REAR AXLE STABILIZER (SWAY) BAR MAY NOT HAVE BEEN PROPERLY HEAT TREATED. United States

PACCAR Incorporated

AIR BRAKE SYSTEM WAS MODIFIED BY ADDING A LONGER AIR LINE BETWEEN THE ABS SOLENOID AND THE TRANSFER TEE TO SIMPLIFY MANUFACTURING. THIS MODIFICATION CAUSED THE TRUCKS TO BE IN NON-COMPLIANCE WITH FMVSS 121, BRAKE TIMING TEST.

March 4, 1991

United States

PACCAR Incorporated

January 6, 1991

United States

PACCAR Incorporated

PITMAN ARM PINCH BOLTS MAY HAVE BEEN INADEQUATELY TORQUED.

December 6, 1990

United States

PACCAR Incorporated

HARD BRAKING OCCURRING DURING A TURNING MANEUVER CAN CAUSE THE FIREWALL MOUNTED STEERING SHAFT KNUCKLE AND THE ENGINE MOUNTED FUEL FILTER BRACKET TO COME IN CONTACT.

May 1, 1990

United States

PACCAR Incorporated

AN INCORRECT PINCH BOLT WAS USED IN THE STEERING GEAR PITMAN ARM THAT DOES NOT ALLOW PROPER CLAMPING FORCE ON THE ARM SPLINE.

November 6, 1989

United States

PACCAR Incorporated

October 27, 1989

United States

PACCAR Incorporated

FUEL PUMPS MAY HAVE A LOOSE RACK FASTENER THAT COULD ALLOW THE BOLT TO COME OUT OF THE RACK.

August 28, 1989

United States

PACCAR Incorporated

BATTERY BOX COVER MOUNTING BRACKET FAILURE COULD ALLOW COVER TO COME LOOSE.

August 10, 1989

United States

PACCAR Incorporated

THROTTLE RETURN SPRING MAY BE INCORRECTLY LOCATED. United States

PACCAR Incorporated

THROTTLE RETURN SPRINGS MAY NOT BE PROPERLY INSTALLED.

August 4, 1989

United States

PACCAR Incorporated

STEPS MAY NOT BE PROPERLY WELDED.

July 30, 1989

United States

PACCAR Incorporated

FUEL LINE ROUTING COULD ALLOW THE LINE TO CONTACT THE ELECTRICAL CONNECTION ON THE STARTER SOLENOID.

April 7, 1989

United States

PACCAR Incorporated

TRUCKS MAY HAVE INSUFFICIENT WELD MATERIAL ATTACHING REAR SUSPENSION BRACKET TO THE REAR AXLE HOUSING. United States

PACCAR Incorporated

STEERING GEAR MOUNTING BOLTS MAY NOT HAVE BEEN TIGHTENED TO THE PROPER TORQUE VALUE AND COULD LOOSEN AND INTERFERE WITH THE PITMAN ARM ON STEERING GEAR.

March 10, 1989

United States

PACCAR Incorporated

TRAILER WIRING HARNESS CONNECTOR COULD CAUSE INTERMITTENT OR TOTAL FAILURE OF TRAILER BRAKE LIGHTS OR ALL OF THE TRAILER LIGHTS.