The defect
A RESONANT VIBRATION CAN BE INITIATED UNDER CERTAIN OPERATING CONDITIONS, CAUSING A DETERIORATION OF THE BRAKE CHAMBER WHICH RESULTS IN REVERSE BRAKE CAM ROTATION CREATING GRABBY BRAKES, BRAKE CHATTER, OR SPRING BRAKE DAMAGE. CONSEQUENCE OF DEFECT: IF THIS OCCURS, COMPLETE BRAKE FAILURE COULD BE EXPERIENCED, AND COULD LEAD TO AN ACCIDENT.
The remedy
REMOVE SPRING SEATS, REVERSE THE AXLE, REWELD AND ASSEMBLE SUSPENSION.
NHTSA's own wording · initiated by ODI
Vehicles covered
| Model | Model years |
|---|---|
| Thayco | 1985 |
Components: SERVICE BRAKES, AIR:DRUM
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Thayco | 1985 | 0 | 1 |
Other service brakes, air recalls in 1986
5 of the 173 recall campaigns reported to NHTSA in 1986 concerned the service brakes, air.
| 86V163000 12 Dec 1986 | FRUEHAUF CORPORATION |
| 86V133000 7 Oct 1986 | VOLVO GM HEAVY TRUCK CORP |
| 86V085000 1 Jul 1986 | NAVISTAR INTL CORP. |
| 86V017000 4 Jan 1986 | NISSAN DIESEL AMERICA, INC |
NHTSA recalls (public domain) · all recalls of 1986