Mack RL, R +13 more: Not Entered

Affects Mack RL, R, RM, HMM, DMM, RD, CF, FS, RS, WL, WS, FL, U, F, DM · 1972–1977 — about 5K vehicles.

The hazard

TRUCKS EQUIPPED WITH MACK 6 CYLINDER ENGINES AND FLEXIBLE BLADE ENGINE COOLING FANS. THE FLEXIBLE BLADE FANS MAY DEVELOP FATIGUE CRACKS IN THE LAMINATED STIFFENER. CONTINUED ENGINE OPERATION COULD CAUSE A PIECE OF THE STIFFENER TO BREAK OFF AND BE PROPELLED OUTSIDE OF THE FAN SHROUD. A PROPELLED FRAGMENT COULD CAUSE INJURY TO SERVICE PERSONNEL IN THE VICINITY OF AN OPERATING ENGINE.

What to do

Contact your dealer; the remedy details were not included in the filing.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational