The defect
Mack Trucks, Inc. (Mack) is recalling certain model year 2015 and 2016 CXU and LEU trucks manufactured May 20, 2014, to March 24, 2015, equipped with certain Haldex Life Seal Type 30/30 Long Stroke Air Brake Actuators manufactured from January 9, 2014, through February 3, 2015. The affected actuators may have an incomplete attachment of the internal rubber diaphragm to the actuation mechanism of the parking brake section of the Life Seal actuator.
The risk
If the diaphragm is not completely attached, there may be internal leakage from the service section past the diaphragm, potentially trapping air pressure in the parking brake section. This air pressure in turn, if not vented, may prevent full release of the actuator unit, and may induce brake drag and may result in overheated wheelend service brakes, increasing the risk of a fire.
The remedy
Mack will notify owners, and dealers will inspect the brake actuator and replace, as necessary, free of charge. The recall began March 20, 2015. Owners may contact Mack customer service at 1-610-709-2131. Mack's number for this recall is SC0387.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Mack CXU | 2016 |
| Mack LEU | 2015, 2016 |
| Mack Pinnacle (cxu) | 2015 |
Components: PARKING BRAKE:DRIVELINE:HYDRAULIC:ACTUATOR
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Mack CXU | 2016 | 1 | 1 |
| Mack LEU | 2015 | 0 | 5 |
| Mack LEU | 2016 | 0 | 2 |
| Mack Pinnacle (cxu) | 2015 | 0 | 15 |
Other parking brake recalls in 2015
16 of the 863 recall campaigns reported to NHTSA in 2015 concerned the parking brake; Mack Trucks, Inc. filed 118 campaigns in all.
| 15V742000 10 Nov 2015 | Forest River, Inc. |
| 15V699000 23 Oct 2015 | Thor Motor Coach |
| 15V642000 13 Oct 2015 | Newmar Corporation |
| 15V479000 30 Jul 2015 | Temsa Global Sanayi Ve Ticaret A.S. |
| 15V464000 24 Jul 2015 | Ford Motor Company |
| 15V350000 5 Jun 2015 | Nova Bus |
| 15V289000 18 May 2015 | Autocar, LLC |
| 15V202000 6 Apr 2015 | General Motors LLC |
NHTSA recalls (public domain) · all recalls of 2015