8 recalls found. |
DEFECT #1 - SERVICE BRAKES, AIR:DRUM
Posted on: 1979-12-12
Description
As a result of severe shock and vibrations, the brake spiders on the involved vehicles may develop cracks near the camshaft mounting boss. The crack propagates across the spider until the camshaft boss is completely severed from the remainder of the spider. When the camshaft boss has completely severed, the s-cam, s-cam bracket, air chamber and slack adjuster can fall away from the brake spider resulting in a no brake condition on the wheel.
Consequence
Corrective Action
The dealer will replace the front brake spiders on all affected vehicles used in snow plow dump and refuse hauling applications. This will be done at no charge.
Notes
Vehicle description: medium and heavy trucks equipped with eaton 16-1/2 by 5inch s-cam.system: service brakes: brake spiders.consequences of defect: partial loss of front braking capability and imbalancescan affect vehicle stability during sudden stops. This can contribute to avehicle accident.
DEFECT #2 - ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
Posted on: 1979-12-12
Description
The fuel separators on the involved vehicles may have thin walls due to a material thickness problem. The separators in these walls may crack and may allow fuel vapors or liquid fuel to leak into the engine under high pressure conditions.
Consequence
Corrective Action
The dealer will install improved separators and relocate both the separator and fuel canister without charge.
Notes
Vehicle description: buses equipped with fuel tank evaporative emissionsystems.system: fuel; fuel tank.consequences of defect: leaking fuel in the presence of a source of ignitioncould lead to a vehicle fire and injury to vehicle passengers.
DEFECT #3 - SERVICE BRAKES, AIR:ANTILOCK:WHEEL SPEED SENSOR
Posted on: 1979-10-12
Description
Consequence
Corrective Action
Notes
School bus chassis.possibility that false cycling of anti-lock systemsnormally occuring below 15 mph causes the brakes to release momentarily withoutwarning extending the stopping distance beyond the control of the driver.thiscondition can cause vehicle to crash without prior warning.(correctivemeasures to be submitted at a later date).bus-school.
DEFECT #4 - SUSPENSION:REAR
Posted on: 1979-10-12
Description
The involved vehicles may contain a poor quality or an insufficient weld of the brake group mounting flanges to the axle housing. This could lead to the flange breaking loose from the housing, allowing the brake group to turn with the brake drum on brake application. This will cut the brake lines to the brake group and may cause partial loss of braking capability.
Consequence
Corrective Action
Dealer will reweld the brake flanges correctly, without charge to owner.
Notes
Vehicle description: medium trucks.system: suspension; rear axle housing.consequences of defect: partial loss of braking capability could result in lossof vehicle control and an accident.
DEFECT #5 - ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
Posted on: 1979-10-12
Description
The vapor separator in the fuel tank evaporative omission system lacks the capacity to prohibit liquid gasoline from passing to the canister under certain fuel expansion conditions. Gasoline would be discharged from the bottom of the canister onto the rear of engine, creating a fire hazard.
Consequence
Corrective Action
Dealer will install an additional fuel separator to enlarge capacity, and add a discharge hose to the bottom of the fuel canister.
Notes
Vehicle description: medium trucks.system: fuel; fuel tank.consequences of defect: in the event of a vehicle fire, serious personal injuryand property damage could result.note: the conditions which may promote the problem are: hot weather, use offuel with a high reid vapor pressure, and operating vehicle in frequentstop-start service.
DEFECT #6 - POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT
Posted on: 1979-10-12
Description
The stub ends of the axle housing may not have been properly manufactured to specifications. These stubs would be of inadequate strength and could fracture. Complete fracture would cause the front wheel, hub, and brake assembly to detach from the axle.
Consequence
Corrective Action
The dealer will inspect and, if necessary, install the correct axle housing stubs.
Notes
Vehicle description: heavy trucks.system: suspension; front axles.consequences of defect: this could result in loss of vehicle control and anaccident.
DEFECT #7 - WHEELS:MULTI PIECE
Posted on: 1979-10-12
Description
The deficiency exists in the front axle forged aluminum hubs. The deficiency which is in the barrel section between the inner and outer bearing, may result in cracks which could lead to hub failure. When hub failure occurs, the separated hub is retained on the axle spindle by the wheel bearing and adjusting nut.
Consequence
Corrective Action
The dealer will replace the forged aluminum hubs with steel hubs, at no charge.
Notes
Vehicle description: medium and heavy trucks.system: suspension; wheels, front axle hubs.consequences of defect: continued vehicle operation could allow the separatedhub with the wheel and tire to become disengaged from the vehicle. Thiscondition could result in loss of vehicle control and an accident.note: advance failure warning will occur in the form of wheel bearing lubeleaks on the wheel rim or tire. In the event hub failure occurs during vehicleoperation, warnings to the operator will occur in the form of an audible sound,wheel vibration and the steering feel of a severely underinflated tire.
DEFECT #8 - PARKING BRAKE
Posted on: 1979-10-12
Description
The parking brake lever mounting bracket may bend and break due to repeated applications of the parking brake. This will create a tearing force at the bolt mounting area of the bracket.
Consequence
Corrective Action
Bent or cracked mounting brackets will be replaced and a reinforcement strap will be added to limit the lift and pull force on the bracket. This will be done without charge to owner.
Notes
Vehicle description: heavy trucks and school buses.system: parking brakes; hand brake lever bracket.consequences of defect: the parking brake could fail. If a vehicle is parked onan incline, with inoperative parking brakes, it could roll free and causeinjury and damage to persons and property.note: until the vehicle can be inspected, it should be parked with the wheelsturned in towards the curb. The wheels should be blocked, and the vehicleparked in the lowest gear. Vehicle should not be left unattended with theengine running and a normal parking brake hand lever adjustment should bemaintained. Do not adjust to higher than normal force, as this increases thepossibility of failure.