VEHICLE DESCRIPTION: MEDIUM DUTY TRUCKS AND SCHOOL BUS CHASSIS-COWLS EQUIPPED WITH AUTOMATIC TRANSMISSIONS. THE WELDS THAT ATTACH THE KEY TO THE TOP OF THE STEERING COLUMN MOUNTED AUTOMATIC TRANSMISSION SHIFT LINKAGE MAY NOT ADEQUATELY RETAIN THE KEY, ALLOWING THE TRANSMISSION TO BE IN A GEAR OTHER THAN THAT INDICATED ON THE PRNDL, OR IN SOME CASES, RNDL.
THE INVOLVED VEHICLES WERE PRODUCED WITH HYDRAULIC BRAKE BOOSTER SUPPLY HOSES THAT ARE LOCATED TOO CLOSE TO THE ENGINE EXHAUST MANIFOLD AND MAY CHAFE AND DEVELOP HEAT DAMAGE DURING VEHICLE OPERATION. CHAFING AND HEAT INDUCED DETERIORATION OF A HOSE DUE TO DIRECT CONTACT WITH THE MANIFOLD MAY CAUSE THE HOSE TO WEAR. A SUBSEQUENT RUPTURE WILL RESULT IN PUMP FLUID LOSS.
ON THE AFFECTED VEHICLES, THE WIRING ASSEMBLY TO THE FLOOR MOUNTED HEADLAMP DIMMER SWITCH MAY BE TOO TIGHT; SHOULD WIRES DISCONNECT, THE HEADLIGHTS WILL NOT OPERATE.
THESE VEHICLES MAY HAVE BEEN MANUFACTURED WITH AN INCORRECT END CLAMP ON THE HAND THROTTLE ACTUATING CABLE. UNDER CERTAIN CONDITIONS, PERTAINING TO THE CLAMP-TO-THROTTLE CABLE ORIENTATION AND DISTANCES OF THE CABLE TO GOVERNOR SHAFT, THE THROTTLE CABLE END CLAMP MAY INTERFERE WITH THE OUTBOARD ACCELERATOR.
THESE VEHICLES MAY HAVE BEEN MANUFACTURED WITH AN INCORRECT END CLAMP ON THE HAND THROTTLE ACTUATING CABLE. UNDER CERTAIN CONDITIONS, PERTAINING TO THE CLAMP-TO-THROTTLE CABLE ORIENTATION AND DISTANCES OF THE CABLE TO GOVERNOR SHAFT, THE THROTTLE CABLE END CLAMP MAY INTERFERE WITH THE OUTBOARD ACCELERATOR.
THESE VEHICLES MAY HAVE BEEN MANUFACTURED WITH AN INCORRECT END CLAMP ON THE HAND THROTTLE ACTUATING CABLE. UNDER CERTAIN CONDITIONS, PERTAINING TO THE CLAMP-TO-THROTTLE CABLE ORIENTATION AND DISTANCES OF THE CABLE TO GOVERNOR SHAFT, THE THROTTLE CABLE END CLAMP MAY INTERFERE WITH THE OUTBOARD ACCELERATOR.
THE INVOLVED VEHICLES WERE ASSEMBLED WITH THE LEFT FRONT BRAKE TUBE RETAINING CLIP MISSING. THE ABSENCE OF A RETAINING CLIP MAY ALLOW THE BRAKE TUBE TO RUB AGAINST THE SHOCK ABSORBER, CAUSING WEAR ON THE TUBE AND, EVENTUALLY, LOSS OF BRAKE FLUID.
THE AIR BRAKE LINES MAY BE ROUTED TOO CLOSE TO THE EXHAUST MUFFLER. BECAUSE THE AIR BRAKE LINES ARE MADE OF NYLON MATERIAL, HEAT FROM THE EXHAUST MUFFLER CAN WEAKEN THE BRAKE LINE TUBES, POSSIBLY CAUSING THEM TO RUPTURE. TUBE RUPTURE COULD RESULT IN LOSS OF AIR IN THE SECONDARY AIR BRAKE SYSTEM.