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Network/ United States/ Mack/ 15V644000

Mack · United States · High

Mack Pinnacle (Cxu), Pinnacle (Chu): Trailer hitches — fifth wheel assembly

Affects Mack Pinnacle (Cxu), Pinnacle (Chu) · 2011–2014 — about 448 vehicles.

The hazard

If the fifth wheel and locking mechanism are sufficiently damaged, the locking mechanism may fail to operate as intended and the trailer may unexpectedly detach from the tractor, increasing the risk of a crash.

What to do

Mack will notify owners, and Fontaine dealers will replace the fifth wheel with an Ultra NT model fifth wheel, free of charge. The recall began on November 18, 2015. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0395.

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