Slack adjusters: automaticRecall 11V-272 · Mack vehicles
MACK TRUCKS, INC recall 11V-272 covers 1,524 Mack vehicles for a slack adjusters: automatic problem, reported to NHTSA on May 3, 2011.
Source: NHTSA recall 11V272000 and manufacturer quarterly reports. Started by the manufacturer.
The problem
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.
The risk
SLACK ADJUSTERS WITH THIS FLOW NOTCH COULD CRACK UNDER NORMAL BRAKING CONDITIONS CAUSING LOSS OF BRAKING WHICH COULD RESULT IN A VEHICLE CRASH.
The fix
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.
OWNERS MAY ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY 1-800-424-9153), OR GO TO <A HREF=HTTP://WWW.SAFERCAR.GOV>HTTP://WWW.SAFERCAR.GOV</A>.
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.