July 27, 2021 NHTSA CAMPAIGN NUMBER: 21V574000
Loose suspension bolts can detach, possibly resulting in a loss of vehicle control and increasing the risk of a crash.
NHTSA Campaign Number: 21V574
Manufacturer Mack Trucks
, Inc.
Components SUSPENSION
Potential Number of Units Affected 60
Summary
Mack Trucks
, Inc. (Mack
) is recalling certain 2022 Medium-Duty Trucks. The spring hanger brackets on the front suspension may have loose bolts.
Remedy
Dealers will tighten the spring hanger bracket bolts, free of charge. Owner notification letters were mailed on August 17, 2021. Owners may contact Mack
customer service at 1-800-866-1177. Mack
’s number for this recall is SC0428.
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.nhtsa.gov.
RECALL INFORMATION
(July, 2021)
Mack
has determined that certain model year 2022 Mack
Medium Duty (“MMD”) chassis, were manufactured with a possible under torque condition on the steer axle front spring hangers.
Mack Trucks
has not received any complaints or reports of vehicle crashes because of this possible safety concern.
To ensure that these vehicles meet Mack
’s stringent quality requirements, a retorque of the affected fasteners will be required.
VEHICLES AFFECTED
Certain Mack
North America vehicles manufactured between June, 21, 2021 through July, 02, 2021.
VEHICLE QUANTITY
There are 60 vehicles affected by this recall (60 U.S., 0 Canada).
Repair Instructions
1. Secure vehicle for service.
2. Remove front bumper.
3. Retorque all 12 (6 per hanger) front spring hanger fasteners to 320 ± 50Nm (236 ± 37 lbf-ft).
NOTE: Be sure to hold fastener from the head side and torque from the nut side of the fastener.
4. Reinstall the removed bumper and torque fasteners to 175 ± 30 Nm (129 ± 22 lbf-ft).
5. Release vehicle for service.
SEOCONTENT-START
Date Number Release Page 07.2021 SC0428 01 1(3)
Mack
Medium Duty Front Spring Hanger Torque
MD6 and MD7
Safety
R ecall
Mack Trucks
Inc.
Greensboro, NC USA
Page 2 of 3
Mack Truck
Inc.
Safety Recall Date 07.2021 Page 3 of 3
REIMBURSEMENT
Note: Dealers are to perform Safety Recall on all subject vehicles at no charge to the vehicle owner regardless of mileage, age of vehicle or ownership (original purchaser or subsequent purchasers). Whenever vehicles are subject to a Safety Recall are brought to your dealership for service, or taken into your dealership vehicle inventory, it is strongly recommended that every effort be made to perform the recall correction before the vehicle is sold or released to the owner.
This repair is covered by an authorized Safety recall. Reimbursement is obtained through the normal claim handling process.
UCHP Reimbursement Claim Type (used only when uploading from the Dealer Business System)
40
Recall Status
Vehicle repaired per instructions
1-Modified per instructions Labor Codes
Primary Labor Code:
7210-05-02-04 Spring anchorage, bolts, Tightening
1.0 Causal Part
78531138 Authorization Number
C6631
***********************************************************************************************************
MACK TRUCKS![]()
RECALL ALERT
Subject:
Recall Number: Date:Safety Recall SC0428, MD Spring Hanger
SRA-M428
July 30, 2021
Applicable Markets: ☒U.S. Canada
Description
Mack
has determined that the trucks in question were manufactured with a possible under-torque condition on the steer axle front spring hangers. Under-torqued fasteners may result in premature failure of the fastener that can potentially lead to loss of control and a vehicle crash.
To remedy, the spring hanger bracket fasteners will be torqued to specification.
Model and Model Years Affected
• Certain Mack
2022 MD6 and MD7 model vehicles; Build dates: June 22, 2021 through July 2, 2021.
Vehicle Quantities
• 60 all US
Dealer Responsibilities
• The National Traffic and Motor Vehicle Safety Act and Canadian Motor Vehicle Safety Act requires dealers to ensure that all new and used vehicles are free of safety defects and comply with all relevant safety standards at the time of delivery to the consumer.
• Dealers should make their personnel aware of the safety recall. In the event that a dealer has a vehicle included in the safety recall in their inventory to be sold, the condition must be corrected before releasing it to a customer.
Notification Release Schedule
• Vehicle list will be posted on the Trucks Dealer Portal on July 30, 2021.
• Owner notification letters will be released on or before August 27, 2021.
Contact
If you have questions or concerns about this recall, contact the Regulatory Affairs Department at vtna.regulatoryaffairs@volvo
.com.
© Mack Trucks
, Inc. CONFIDENTIAL – For limited distribution only to circulation list above. This bulletin, and any information herein, is subject to change by Company without notice. For the most current and accurate information, always refer to Trucks Dealer Portal for the electronic version of this document.
SEOCONTENT-END
1 Affected Product
Vehicle
| MAKE | MODEL | YEAR |
| MACK | MD | 2022 |
9 Associated Documents
Recall Quarterly Report #2, 2021-4
RCLQRT-21V574-5396.PDF 211.224KB
Recall Acknowledgement
Recall Quarterly Report #1, 2021-3
RCLQRT-21V574-4687.PDF 211.122KB
Remedy Instructions and TSB
RCRIT-21V574-7071.pdf 265.08KB
Defect Notice 573 Report
RCLRPT-21V574-4389.PDF 213.873KB
Recall 573 Report- Amendment 2
RCLRPT-21V574-6773.PDF 213.936KB
Recall 573 Report- Amendment 2
RCLRPT-21V574-6721.PDF 213.936KB
Manufacturer Notices(to Dealers,etc)
RCMN-21V574-7251.pdf 188.261KB
Recall Quarterly Report #3, 2022-1
RCLQRT-21V574-4389.PDF 211.304KB
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