1991 THOMAS BUS Recalls (6)
- Campaign:
- 91V159000 on 09/25/1991
- Component:
- Steering:linkages:link:drag:connection
- Manufactured:
- 10/31/1990 - 08/31/1991
- Affected:
- 800
- Defect:
- The steering linkage (drag link) between the steering gear pitman arm and the steering arm on the axle may have been improperly fastened.
- Consequence:
- The drag link could become disconnected at either endwhich results in loss of steering control and the potential for an accident.
- Correction:
- Install correct pins and properly tighten the castellated nuts.
- Notes:
- System: steering.vehicle description: buses, school buses.
- Campaign:
- 91V169000 on 10/03/1991
- Component:
- Fuel system, gasoline:delivery:fuel pump
- Manufactured:
- 10/31/1988 - 07/31/1991
- Affected:
- 407
- Defect:
- The fuel shut-off solenoid in the cummins 6c engine may be faulty, causing spontaneous interruption of fuel flow to the engine during normal operation. this results in loss of power to driving wheels, power steering, and other power assisted operating systems.
- Consequence:
- Loss of engine power and secondary loss of power assistedsystems reduces steering control, braking ability, visual systems and otherpower assisted operating systems, resulting in increased risk of vehicleaccident.
- Correction:
- Where necessary, replace the solenoid spring, adjust solenoid, replace wires, and verify maximum power requirements to the solenoid.
- Notes:
- System: fuel pump.vehicle description: buses and school buses with cummins 6c engines.
- Campaign:
- 92V013000 on 02/09/1992
- Component:
- Visibility:glass, side/rear
- Manufactured:
- 09/30/1980 - 12/31/1991
- Affected:
- 7,500
- Defect:
- The center actuator that releases two catches via two pull rods can become non-functional from poor or improper maintenance, lack of lubrication, corrosion, or a combination all three causes.
- Consequence:
- When the center actuator is non-functional, the windowis very difficult to open, and would not function as an emergency exit in caseof a vehicular accident.
- Correction:
- Remove the old center actuator and install an improved actuator.
- Notes:
- System: rear push-out window.vehicle description: buses and school buses with rear push-out windows foremergency egress.
- Campaign:
- 92V120000 on 08/27/1992
- Component:
- Power train:driveline:driveshaft
- Manufactured:
- 09/30/1988 - 07/31/1992
- Affected:
- 1
- Defect:
- The driveshaft used with some engine/transmission combinations had insufficient welds joining some of the components.
- Consequence:
- The bad welds can develop cracks that can cause completeseparation of the driveshaft. this can result in loss of motive power for thevehicle and possible loss of vehicle control.
- Correction:
- Replace defective north american driveshafts with spicer driveshafts.
- Notes:
- System: powertrain.vehicle description: school buses equipped with north american driveshafts.
- Campaign:
- 92V126000 on 09/28/1992
- Component:
- Seats
- Manufactured:
- 11/30/1991 - 07/31/1992
- Affected:
- 1,526
- Defect:
- Incorrect screws were used to attach the plywood seat back to the seat frame.
- Consequence:
- The driver's seat back does not meet the strengthrequirements of fmvss 207, "seating system". should the seat back fail whilethe bus is in motion, the operator could lose control of the bus.
- Correction:
- Remove incorrect screws attaching the plywood back to the seat frame and install proper screws.
- Notes:
- System: interior: driver's seat back; fmvss 207.vehicle description: buses and school buses.
- Campaign:
- 93V029000 on 03/11/1993
- Component:
- Seats
- Manufactured:
- 01/31/1991 - 11/30/1992
- Affected:
- 188
- Defect:
- The safety belt anchorage bolts do not comply with the requirements of fmvss 210, "seat belt assembly anchorages". the seat anchorages could not maintain load of 5,000 lbs for 10 seconds.
- Consequence:
- The safety belts might not adequately protect seatoccupants in the event of a sudden stop or accident.
- Correction:
- Replace the anchorage bolts with bolts of a larger diameter, which meet the load requirements of fmvss 210.
- Notes:
- System: safety belts; fmvss 210.vehicle description: school buses and buses.note: all repairs were completed at the time the recall was issued.
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