The defect
ON CERTAIN CHASSIS BUILT WITH LNG ENGINES, THE NEXGEN LNG TANK'S PRIMARY AND SECONDARY RELIEF VALVES COULD FAIL TO OPEN AND RELIEVE TANK PRESSURE.
The risk
THIS COULD CAUSE ICE BUILDUP ON THE DISCHARGE SIDE OF THE PRIMARY AND SECONDARY PRESSURE SYSTEM ALLOWING THE RELIEF SYSTEM TO FREEZE AND BECOME BLOCKED RESULTING IN OVER PRESSURIZATION OF THE LNG TANKS CREATING THE RISK OF CATASTROPHIC TANK RUPTURE WHICH COULD CAUSE SERIOUS INJURY OR DEATH.
The remedy
DEALERS WILL RETROFIT THE LNG TANKS WITH A NEW PRIMARY RELIEF VALVE PIPE AWAY TUBE AND A NEW VENTILATED SHROUD. THE RECALL BEGAN APRIL 6, 2004. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT MACK AT 1-610-709-3337.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Mack CH | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
| Mack LE | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
| Mack MR | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
Components: FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES
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 CH | 1995 | 0 | 1 |
| Mack CH | 1996 | 1 | 3 |
| Mack CH | 1997 | 1 | 2 |
| Mack CH | 1998 | 0 | 3 |
| Mack CH | 1999 | 0 | 7 |
| Mack CH | 2000 | 0 | 7 |
| Mack CH | 2001 | 0 | 5 |
| Mack CH | 2002 | 2 | 6 |
| Mack CH | 2003 | 0 | 7 |
| Mack CH | 2004 | 0 | 5 |
| Mack LE | 1995 | 0 | 1 |
| Mack LE | 1996 | 0 | 1 |
| Mack LE | 1997 | 0 | 1 |
| Mack LE | 1998 | 0 | 3 |
| Mack LE | 1999 | 0 | 4 |
| Mack LE | 2000 | 0 | 3 |
| Mack LE | 2001 | 0 | 1 |
| Mack LE | 2002 | 1 | 3 |
| Mack LE | 2003 | 0 | 4 |
| Mack LE | 2004 | 0 | 5 |
| Mack MR | 1995 | 0 | 1 |
| Mack MR | 1996 | 0 | 1 |
| Mack MR | 1997 | 0 | 1 |
| Mack MR | 1998 | 0 | 3 |
| Mack MR | 1999 | 1 | 5 |
| Mack MR | 2000 | 0 | 4 |
| Mack MR | 2001 | 0 | 3 |
| Mack MR | 2002 | 0 | 4 |
| Mack MR | 2003 | 0 | 4 |
| Mack MR | 2004 | 0 | 6 |
Other fuel system, other recalls in 2004
9 of the 601 recall campaigns reported to NHTSA in 2004 concerned the fuel system, other; MACK TRUCKS, INC filed 74 campaigns in all.
| 04V453000 15 Sept 2004 | FREIGHTLINER LLC |
| 04V411000 19 Aug 2004 | ORION BUS INDUSTRIES LTD. |
| 04V393000 10 Aug 2004 | FONTAINE MODIFICATION CO. |
| 04V378000 2 Aug 2004 | PACCAR INCORPORATED |
| 04V339000 21 Jul 2004 | CRANE CARRIER COMPANY |
| 04V316000 2 Jul 2004 | AMERICAN SUZUKI MOTOR CORP. |
| 04V308000 23 Jun 2004 | GILLIG CORPORATION |
| 04V281000 8 Jun 2004 | GENERAL MOTORS CORP. |
NHTSA recalls (public domain) · all recalls of 2004