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NHTSA Campaign 11V272000

SERVICE BRAKES, AIR:SLACK ADJUSTERS:AUTOMATIC

Issued by MACK TRUCKS, INC · Reported May 3, 2011 · 1,524 vehicles affected

What's wrong

MACK TRUCKS IS RECALLING CERTAIN MODEL YEAR 2011-2012 CHU, CXU, GU, LEU AND MRU TRUCKS MANUFACTURED FROM OCTOBER 15, 2010, THROUGH JANUARY 31, 2011, AND EQUIPPED WITH GUNITE AUTOMATIC SLACK ADJUSTERS. DUE TO AN INCOMPLETE "KNITTING" OF THE IRON AT THE TIME OF CASTING, INADEQUATE STRUCTURAL INTEGRITY OF THE SLACK ADJUSTER HOUSING CAN OCCUR, WHICH COULD CAUSE THE HOUSING TO BREAK AT THE HANDLE UNDER NORMAL OPERATING LOADS.

Consequence

SLACK ADJUSTERS WITH THIS FLOW NOTCH COULD CRACK UNDER NORMAL BRAKING CONDITIONS CAUSING LOSS OF BRAKING WHICH COULD RESULT IN A VEHICLE CRASH.

Remedy

MACK TRUCKS WILL NOTIFY OWNERS AND DEALERS WILL REPLACE THE SUBJECT SLACK ADJUSTERS FREE OF CHARGE. THE SAFETY RECALL BEGAN ON AUGUST 24, 2011. OWNERS MAY CONTACT MACK TRUCKS AT 1-800-528-6586.

Vehicles affected by this recall

Make Model Year Units
MACK GRANITE (GU) 2012 1,524
MACK GU 2011 1,524
MACK LEU 2011 1,524
MACK LEU 2012 1,524
MACK MRU 2011 1,524
MACK MRU 2012 1,524
MACK PINNACLE (CHU) 2011 1,524
MACK PINNACLE (CHU) 2012 1,524
MACK PINNACLE (CXU) 2011 1,524
MACK PINNACLE (CXU) 2012 1,524

Source: NHTSA Campaign 11V272000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.