NHTSA recall 78E029000 · Equipment
Service brakes, hydraulic › Foundation components › Drum › Wheel cylinders
The defect
The involved cylinders contain the wrong sized rubber sealing cup. The oversized cup may crinkle within the smaller bore, causing loss of brake fluid. Half of the braking system could fail. Also, the oversized cup may prevent proper piston functioning, thereby preventing shoe return which would preclude adjuster operation.
The remedy
Dealer will replace the affected cylinders free of charge.