NHTSA recall 89V223000
Service brakes, hydraulic › Foundation components › Master cylinder
Ford Aerostar
Reported Dec 11, 198930,000 vehicles affectedFORD MOTOR COMPANYBuilt Aug 1, 1989 – Oct 1, 1989
The defect
Inability to maintain pressure in the secondary system of the master cylinder (controls braking of rear wheels) could increase brake pedal travel and reduce brake performance at temperatures less than 40 degrees.
The risk
This would cause reduced braking effectiveness andincreased stopping distance that could result in a crash or collision.
The remedy
Install new design master cylinder incorporating a redesigned seal.