Vehicle Make / Model: Model Year(s):

• FORD / EXPLORER 1991-1994

• FORD / RANGER 1991-1994

Manufacturer: FORD MOTOR COMPANY 

Report Receipt Date: FEB 05, 1996

NHTSA CAMPAIGN ID Number: 96V024001 NHTSA Action Number: EA95018

Component: SERVICE BRAKES, HYDRAULIC: POWER ASSIST: HYDRAULIC

Potential Number of Units Affected: 108,000

Summary:

THE STUDS WHICH ATTACH THE BRAKE MASTER CYLINDER TO THE POWER BRAKE VACUUM BOOSTER ASSEMBLY CAN DEVELOP STRESS CORROSION CRACKING AFTER BEING OPERATED FOR AN EXTENDED PERIOD OF TIME IN THE SOUTHERN CALIFORNIA LOCATION.

Consequence:

IF A CRACK OCCURS, IT COULD RESULT IN ONE OR BOTH STUDS FRACTURING. THE MASTER CYLINDER COULD THEN SEPARATE FROM THE VACUUM BOOSTER, WHEN THE BRAKES ARE APPLIED, PREVENTING THE SERVICE BRAKES FROM ACTIVATING INCREASING THE RISK OF A VEHICLE ACCIDENT.

Remedy:

DEALERS WILL REPLACE THE POWER BRAKE VACUUM BOOSTER ASSEMBLY.

Notes:

SYSTEM: BRAKES; POWER ASSIST; PRIMARY; BOOSTER. VEHICLE DESCRIPTION: MULTI-PURPOSE VEHICLES AND LIGHT DUTY TRUCKS ORIGINALLY SOLD OR CURRENTLY REGISTERED IN THE SOUTHERN CALIFORNIA COUNTIES OF LOS ANGELES, ORANGE, SAN BERNADINO, SAN DIEGO, RIVERSIDE, VENTURA, SANTA BARBARA, SAN LUIS OBISPO, IMPERIAL, AND KERN. NOTE: OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME, SHOULD CONTACT FORD AT 1-800-392-3673. ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-800-424-9393.