Campaign 13V-492

Pro-torque nut may not have been installed correctly, which may result in a loosening of the nut

Defect summary

Mack Trucks is recalling certain model year 2013-2014 CHU, CXU, GU, LEU, and MRU vehicles manufactured with pro-torque axle spindle nuts from August 28, 2012, through August 16, 2013. The pro-torque nut may not have been installed correctly, which may result in a loosening of the nut.

Consequence

If the nut comes loose, the hub assembly may separate from the vehicle, increasing the risk of a crash.

Remedy

Mack Trucks will notify owners, and dealers will inspect and repair the vehicles, as necessary, free of charge. The recall began on November 12, 2013. Mack's recall number is SC0371. Owners may contact Mack Trucks at 1-336-393-2000.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Source: NHTSA ODI recalls file, campaign 13V492000. Text as published by NHTSA.

Vehicles covered

5 product lines are covered

Owner complaints filed with NHTSA about powertrain on these vehicles: 1, of which 0 involved a crash, fire, injury or death. Complaints are not verified by NHTSA.

Vehicles covered by campaign 13V-492
Make	Model	Model years	Complaints on this component
Mack	CHU	2013 to 2014	0
Mack	Granite (GU)	2013 to 2014	0
Mack	LEU	2013 to 2014	0
Mack	MRU	2013 to 2014	0
Mack	Pinnacle (CXU)	2013 to 2014	1

Source: NHTSA ODI recalls and complaints files. Equipment, tire and child-seat campaigns list products, not vehicles.

Investigation

No NHTSA investigation is linked to this recall

Most recalls are started by the manufacturer. This one lists "Manufacturer" as its origin.

24V-424 Jun 9, 2024
Tie rod assemblies may contain an improperly heat-treated ball stud that can fail, resulting in a sudden loss of steering control
19V-047 Jan 21, 2019
Internal component in the clutch assembly may fail, possibly resulting in unintended vehicle movement
16V-099 Feb 19, 2016
Cap nut that retains the interaxle driveshaft yoke to the rear axle input shaft may loosen
15V-690 Oct 22, 2015
Affected axles are equipped with hex nuts on the flange yoke that may not have been properly tightened
11V-370 Jul 21, 2011
Mack trucks is recalling certain model year 2010-2011 chu, cxu and gu heavy trucks manufactured from july 12, 2010, through july 23, 2010 for a…
11V-295 May 20, 2011
Tubing used to assemble the affected drivelines has a nonconforming seam weld with insufficient bonding of the material