Brake loss from incorrect brake chamber mounting
Defect Summary
Mack trucks, inc. (mack) is recalling certain model year 2013-2015 pinnacle (cxu) trucks manufactured from october 3, 2012, through february 18, 2014 and equipped with meritor air disc brakes. in the affected vehicles, the brake chambers may have been incorrectly mounted resulting in internal contamination of the air brake calipers.
Safety Consequence
Contamination of the calipers may cause a loss of brakes on one wheel, lengthening the distance required to stop the vehicle, increasing the risk of a crash.
Corrective Action
Mack will notify owners, and dealers will inspect the disc brake caliper and brake chamber to determine if the washers are located in the correct position. if the washers are in the correct position, no further action is required. if the washers are not located in the correct position, replacement of the disc brake caliper and brake chamber will be performed and the addition of two washers per brake assembly will be installed, free of charge. the recall began on september 30, 2015. owners may contact mack customer service at 1-800-866-1177. mack's number for this recall is sc0392.
Similar Recalls
Other recalls from Mack Trucks, Inc. or involving Service Brakes, Air.
FAQ: Recall 15V521000
Your rights, the repair process, and what each field on this page means.
What is recall 15V521000?
NHTSA recall 15V521000 was issued by Mack Trucks, Inc. on August 17, 2015. It addresses: Brake loss from incorrect brake chamber mounting. The recall affects approximately 79 vehicles, with the defect involving the Service Brakes, Air component.
How do I get this recall repaired?
Contact any authorized Mack Trucks, Inc. dealer and reference NHTSA recall ID 15V521000 or the manufacturer campaign number SC0392. Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.