SC0428 2022 Mack Medium-Duty Trucks Mack Medium Duty Front Spring Hanger Torque

July 27, 2021 NHTSA CAMPAIGN NUMBER: 21V574000

Loose Front Suspension Bolts

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 TruckseBay logo, Inc.

Components SUSPENSION

Potential Number of Units Affected 60

 

Summary

Mack TruckseBay logo, Inc. (MackeBay logo) 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 MackeBay logo customer service at 1-800-866-1177. MackeBay logo’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)

MackeBay logo has determined that certain model year 2022 MackeBay logo Medium Duty (“MMD”) chassis, were manufactured with a possible under torque condition on the steer axle front spring hangers.

Mack TruckseBay logo has not received any complaints or reports of vehicle crashes because of this possible safety concern.
To ensure that these vehicles meet MackeBay logo’s stringent quality requirements, a retorque of the affected fasteners will be required.

 

VEHICLES AFFECTED

Certain MackeBay logo 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.

 



1 Affected Product

Vehicle

MAKEMODELYEAR
MACKeBay logoMD2022

 


9 Associated Documents

Recall Quarterly Report #2, 2021-4

RCLQRT-21V574-5396.PDF 211.224KB

 


Recall Acknowledgement

RCAK-21V574-8135.pdf 645.93KB

 


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

 


Latest Recalls Documents

https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=21V574&docType=RCL

 


 

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