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.
Jim Oaks is the founder of TheRangerStation.com, the longest-running Ford Ranger resource online since 1999. With over 25 years of hands-on experience building and modifying Ford Rangers — including magazine-featured builds like Project Transformer — Jim has become one of the most trusted authorities in the Ford off-road and enthusiast space. In 2019, he was loaned a Ranger FX4 by Ford Motor Company to test and document across the TransAmerica Trail. Jim continues to inspire and guide Ranger owners around the world.