What NHTSA investigated
Summary: recent rockwell reports identified the following additional concerns: a: insufficient air pressure due to inadequate air compressorcapacity; b: air horn plumbed into air system without pressure protectionvalve; c: brake imbalance caused by brake proportioning valves whichreduce the front brake pressure. The above problems may result in heat checking and cracking of the rear brake drums.
The recall that followed
Vehicles covered
| Make | Model | Model years |
|---|---|---|
| Emergency One | AMBULANCE | 1985 |
| Federal Motors | FEDERAL | 1978–1986 |
Source
From NHTSA’s investigation file, rebuilt daily. To report a problem with your own vehicle, go to nhtsa.gov/report-a-safety-problem. All open investigations.