The defect
A MANUFACTURING ERROR RESULTED IN THE INSTALLATION OF CARBON STEEL SPRINGS IN SOME DUAL-COMPARTMENT AIR RESERVOIR CHECK VALVES. CARBON STEEL SPRINGS ARE INADEQUATE FOR THIS APPLICATION BECAUSE THEY ARE SUBJECT TO SEVERE CORROSION AND SUBSEQUENT FAILURE OF THE CHECK VALVE.
The remedy
THE CARBON STEEL SPRING WILL BE REPLACED WITH A STAINLESS STEEL ONE.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Mack MH | 1982, 1983 |
Components: SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Mack MH | 1982 | 0 | 7 |
| Mack MH | 1983 | 0 | 8 |
Other service brakes, air recalls in 1984
10 of the 164 recall campaigns reported to NHTSA in 1984 concerned the service brakes, air; MACK TRUCKS, INCORPORATED filed 245 campaigns in all.
| 84V126000 11 Oct 1984 | PACCAR, INCORPORATED |
| 84V120000 2 Oct 1984 | GENERAL MOTORS CORP. |
| 84V114000 25 Sept 1984 | FREIGHTLINER CORP. |
| 84V117000 24 Sept 1984 | CHRYSLER CORPORATION |
| 84V081000 9 Jul 1984 | FREIGHTLINER CORP. |
| 84V076000 19 Jun 1984 | PACCAR, INCORPORATED |
| 84V061000 18 May 1984 | GENERAL MOTORS CORP. |
| 84V032000 22 Mar 1984 | MACK TRUCKS, INCORPORATED |
NHTSA recalls (public domain) · all recalls of 1984