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04-19-2013, 08:24 AM #1
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- Merced, CA 95348-1422
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Autocar, LLC is recalling some 2011-2013 ACX; Air Brake Leakage may cause Brake Drag
Report Receipt Date: APR 11, 2013
NHTSA Campaign Number: 13V138000
Component(s): PARKING BRAKE
Potential Number of Units Affected: 532
All Products Associated with this Recall close
Vehicle MakeModelModel Year(s)
Manufacturer: Autocar Industries, LLC
Autocar, LLC is recalling certain model year 2011-2013 ACX vehicles manufactured January 24, 2011, through December 4, 2012. These vehicles are equipped with Meritor axle assemblies that were built with disc brakes using MGM J24 series air brake chambers. In the affected axles, the brake chambers may leak pressure allowing the parking brake to drag when it is supposed to be released. Brake dragging could lead to overheated brake components.
Overheated brake components could result in a fire.
Autocar will notify owners and will replace the actuators as needed, free of charge. The safety recall is expected to begin June 10, 2013. Owners may contact Autocar at 1-765-489-5499. Autocar's campaign recall number is A-1301.
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153),
Recall of part responsible for the defect:
Recall A-1301: MGM Type 24 J-Series Piston Parking Brake Actuators
Associate Administrator for Enforcement
National Highway Traffic Safety Administration
Attn: Recall Management Division (NVS-215)
1200 New Jersey Avenue SE
Washington, DC 20590
Re: Report Pursuant to 49 CFR 573.6
Autocar, LLC Recall No. A-1301
In Response to NHTSA Recall No. 13E-012 (Meritor, Inc.)
The following information is in accordance with the requirements of 49 CFR Part 573.6 as it applies to a defect relating to motor vehicle safety. 573.6(c)(I): The manufacturer's name Autocar, LLC (“Autocar”).
Identification of the vehicles including a description of the manufacturer's basis for its
determination of the recall population Autocar has identified a defect in 2011, 2012 and 2013 model-year ACX model heavy-duty class 8 vehicles built by Autocar between January 24, 2011 and December 4, 2012, with serial numbers in the range 212620 through 215475. The defect occurs in axles of vehicles equipped with Meritor DiscPlus EX225 Air Disc brakes, and Q Plus Cam Brakes manufactured between November 23, 2010 and October 22, 2012 that utilize certain MGM Type 24 J-Series Piston parking Brake Actuators (“Actuator”). Autocar based its determination of the vehicle range on Meritor’s reported affected axle serial numbers.
The total number of vehicles or items of equipment potentially containing the defect
532 vehicles are potentially affected.
The percentage of vehicles or items of equipment estimated to actually contain the defect or noncompliance 100% of the 532 vehicles are affected.
A description of the defect or noncompliance, including both a brief summary and a
detailed description, with graphic aids as necessary, of the nature and physical location (if applicable) of the defect or noncompliance
Meritor, Inc. has informed Autocar that with regard to the affected axles:
MGM Brakes, a Division of Indian Head Industries, Inc. (“MGM Brakes”) informed Meritor that it implemented a design change that, according to
field reports, inadvertently allows for intermittent leakage of air past a seal in actuator. If insufficient air pressure exists, a spring within the actuator becomes "uncaged" and applies force to the brake. Depending on the amount of leakage, the brake can drag while the vehicle is in service or prevent the wheel from rotating,
thereby resulting in elevated operating temp. and/or could result in wheel-end fire.
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