NHTSA recall 98E030000 · Equipment
Engine and engine cooling › Engine › Diesel
The defect
Equipment description: C8.3 urban bus engines shipped to flxible corporation. the lubricating thermostat internal pin exerts force on the inside face of the large aluminum hex nut, wearing a hole in this nut. lubricating oil can then leak or spray up onto the exhaust manifold and into the engine compartment.
The risk
Oil leakage onto the engine's exhaust manifold and into the engine compartment could possibly result in a fire.
The remedy
Dealers will replace the oil thermostat with a new lubricating bypass valve.