NHTSA Campaign 04V159000

FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES

Issued by MACK TRUCKS, INC · Reported Apr 7, 2004 · 317 vehicles affected

What's wrong

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.

Consequence

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.

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.

Vehicles affected by this recall

Make Model Year Units
MACK CH 1995 317
MACK CH 1996 317
MACK CH 1997 317
MACK CH 1998 317
MACK CH 1999 317
MACK CH 2000 317
MACK CH 2001 317
MACK CH 2002 317
MACK CH 2003 317
MACK CH 2004 317
MACK LE 1995 317
MACK LE 1996 317
MACK LE 1997 317
MACK LE 1998 317
MACK LE 1999 317
MACK LE 2000 317
MACK LE 2001 317
MACK LE 2002 317
MACK LE 2003 317
MACK LE 2004 317
MACK MR 1995 317
MACK MR 1996 317
MACK MR 1997 317
MACK MR 1998 317
MACK MR 1999 317
MACK MR 2000 317
MACK MR 2001 317
MACK MR 2002 317
MACK MR 2003 317
MACK MR 2004 317

Source: NHTSA Campaign 04V159000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.