The defect
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.
The risk
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 FULLY ACTIVATING INCREASING THE RISK OF A VEHICLE ACCIDENT.
The remedy
DEALERS WILL REPLACE THE POWER BRAKE VACUUM BOOSTER ASSEMBLY.
NHTSA's own wording · initiated by ODI
Vehicles covered
| Model | Model years |
|---|---|
| Mazda B-Series Truck | 1994 |
| Mazda Navajo | 1991, 1992, 1993, 1994 |
Components: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:HYDRAULIC
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Mazda B-Series Truck | 1994 | 122 | 4 |
| Mazda Navajo | 1991 | 39 | 5 |
| Mazda Navajo | 1992 | 12 | 3 |
| Mazda Navajo | 1993 | 22 | 5 |
| Mazda Navajo | 1994 | 49 | 3 |
Other service brakes, hydraulic recalls in 1996
26 of the 297 recall campaigns reported to NHTSA in 1996 concerned the service brakes, hydraulic; MAZDA (NORTH AMERICA),INC filed 58 campaigns in all.
| 96V260000 27 Dec 1996 | CHRYSLER CORPORATION |
| 96V215000 29 Oct 1996 | CHRYSLER CORPORATION |
| 96V202000 16 Oct 1996 | AMERICAN TRANSPORTATION CORP. |
| 96V143003 8 Oct 1996 | CHRYSLER CORPORATION |
| 96V184000 25 Sept 1996 | FORD MOTOR COMPANY |
| 96V174000 13 Sept 1996 | INTERNATIONAL TRUCK AND ENGINE |
| 96V157000 27 Aug 1996 | VOLVO TRUCKS NORTH AMERICA INC |
| 96V152000 15 Aug 1996 | RANSOMES CORPORATION |
NHTSA recalls (public domain) · all recalls of 1996