The defect
THERE MAY BE HYDRAULIC FLUID CONTAMINATION FROM CONDENSATION FORMATION THAT CAN PLUG THE ABS BRAKE BOOSTER PUMP FILTER; STRESS CORROSION OF THE MASTER CYLINDER SNAP RING HAS BEEN TRACED TO CHLORINE LEAKING FROM THE LOW PRESSURE HYDRAULIC HOSE WHICH MAY CAUSE IT TO BREAK; FRONT BRAKE HOSE TO TIRE INTERFERENCE WHICH MAY CAUSE FAILURE OF THE BRAKE HOSE.
The risk
CONTAMINATION OF THE HYDRAULIC FLUID CAN CAUSEMALFUNCTIONING OF THE ANTI-LOCK BRAKE SYSTEM; LOW PRESSURE HOSE LEAKAGE CAUSESLOSS OF BRAKE FLUID AND ALSO RESULTS IN CORROSION AND FAILURE OF THE MASTERCYLINDER SNAP RING, RESULTING COMPLETE BRAKE FAILURE; FAILURE OF THE FRONT BRAKEHOSE DUE TO HOSE TO TIRE INTERFERENCE WILL CAUSE FAILURE OF ONE HALF OF THEBRAKE SYSTEM RESULTING IN A LONGER STOPPING DISTANCE THAN EXPECTED.
The remedy
REPLACE ABS LOW PRESSURE HOSE; REBUILD MASTER BRAKE CYLINDER; INSPECT, SERVICE INTERFERENCE PROBLEMS, AND REPLACE FRONT BRAKE HOSE AS NECESSARY.
NHTSA's own wording · initiated by ODI
Vehicles covered
| Model | Model years |
|---|---|
| Jeep Cherokee | 1989, 1990 |
| Jeep Wagoneer | 1989, 1990 |
Components: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Jeep Cherokee | 1989 | 191 | 3 |
| Jeep Cherokee | 1990 | 270 | 5 |
| Jeep Wagoneer | 1989 | 11 | 3 |
| Jeep Wagoneer | 1990 | 13 | 5 |
Other service brakes, hydraulic recalls in 1991
32 of the 220 recall campaigns reported to NHTSA in 1991 concerned the service brakes, hydraulic; CHRYSLER CORPORATION filed 640 campaigns in all.
| 91V220000 24 Dec 1991 | OSHKOSH TRUCK CORPORATION |
| 91V207000 25 Nov 1991 | PAS, INC. |
| 91V200000 12 Nov 1991 | CHRYSLER CORPORATION |
| 91V191000 1 Nov 1991 | CHRYSLER CORPORATION |
| 91V187000 27 Oct 1991 | OSHKOSH TRUCK CORPORATION |
| 91V170000 4 Oct 1991 | CHRYSLER CORPORATION |
| 91V158000 13 Sept 1991 | GENERAL MOTORS CORP. |
| 91V161000 11 Sept 1991 | MAZDA (NORTH AMERICA),INC |
NHTSA recalls (public domain) · all recalls of 1991