August 30, 2023 NHTSA CAMPAIGN NUMBER: 23V605000
Loose steering gear fasteners may result in a loss of vehicle control, increasing the risk of a crash.
NHTSA Campaign Number: 23V605
Manufacturer Mack Trucks
, Inc.
Components STEERING
Potential Number of Units Affected 395
Summary
Mack Trucks, Inc. (Mack) is recalling certain 2024 MD6 and MD7 vehicles. The steering gear fasteners may not be properly tightened.
Remedy
Dealers will tighten the steering gear fasteners, free of charge. Owner notification letters are expected to be mailed October 23, 2023. Owners may contact Mack’s customer service at 1-800-866-1177. Mack’s number for this recall is SC449.
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.
Description
Certain 2024 MD6 and MD7 model vehicles were manufactured from June 23, 2023 to July 21, 2023 when improperly calibrated torque tooling was in use. Under-torqued fasteners can result in loss of clamp load, which may affect the steering and potentially cause loss of vehicle control.
There have been no field reports, warranty claims or customer complaints associated with this issue.
The remedy will be to tighten the steering gear fasteners to specification.
Model and Model Years Affected
• Certain 2024 Mack MD6 and MD7 model vehicles manufactured June 23, 2023 through July 21, 2023.
Vehicle Quantities
• 409 vehicles (395 US, 14 Canada)
Dealer Responsibilities
- The National Traffic and Motor Vehicle Safety Act and Canadian Motor Vehicle Safety Act require 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 September 1, 2023.
- Owner notification letters will be released on or before October 23, 2023.
- Repair Instruction will be released once they are available.
Chronology :
August 15 2023 Mack Manufacturing Engineering reports to Product Safety Working Group that Mack Medium Duty assembly plant has reported that the have a potential under torque situation on steering gear fasteners, an investigation is opened at that time.
August 21, 2023 Product Safety Working Group meets and evaluates the investigation results and recommends that this be brought to Product Safety Committee as a potential product safety defect.
August 25, 2023 Product Safety Committee meets and decides that a product safety defect exists.
August 30, 2023 573 Report filed with NHTSA.
There have been no field reports, warranty claims or customer complaints associated with this issue.
1 Affected Product
Vehicle
| MAKE | MODEL | YEAR |
| MACK | MD | 2024 |
5 Associated Documents
Recall Acknowledgement
Defect Notice 573 Report
RCLRPT-23V605-8334.PDF 215.242KB
Mack Trucks – SC0449 Safety Recall Alert – September 2023
RCMN-23V605-2254.pdf 121.025KB
Recall 573 Report – September 6, 2023
RCLRPT-23V605-1302.PDF 215.27KB
Recall 573 Report – September 6, 2023
RCLRPT-23V605-5035.PDF 215.27KB
Latest Recalls Documents
- PRECISE & HIGH QUALITY - Manufactured in Taiwan, our torque wrench is engineered for superior precision. It ships pre-calibrated to +/- 4% accuracy, ensuring dependable results every time. Includes a calibration certificate with a trackable serial number for your assurance.
- DURABLE - Built to last, featuring a reinforced ratchet gear head made from hardened, heat-treated Chrome Vanadium alloy steel for maximum strength and durability.
- LONGEVITY - Protect your investment with our proprietary Electro-Black finish, providing advanced rust and corrosion resistance for extended tool life.
- PERFORMANCE - Easily read and set torque levels with our patent-pending dual-range scale. The high-contrast, yellow-on-black markings are designed for easy visibility, even in low-light conditions.
- OMFORT - Equipped with a reversible ratchet head that drives in both directions and measures torque in a clockwise direction. The ergonomic, knurled handle ensures a non-slip, comfortable grip, reducing hand fatigue.
- Durable Ratchet Head: Made from Hardened treated Chrome Vanadium steel alloy (Cr-V) Corrosion-Retardant: Satin Finish. Made in Taiwan
- Easy Storage: A sturdy plastic storage case is included. Non-Slip Grip: Knurled handle
- Easy to Read: High Contrast & Dual Range Scale. Accurate: Pre-Calibrated to ± 4%
- Accessories included: 1/2" Drive 5" long Extension Bar
- Simple and Reliable: “Click” sound tells the preset torque value is reached. Stop applying force when you hear and feel it.
- 【Precise Torque Control｜±3% High Accuracy】 HERONIX 3/8 torque wrench provides a working torque range of 5–50 Ft-Lb (6.8–67.8 Nm), ideal for precise mechanical adjustments. Each torque wrench 3/8 drive is factory-calibrated to ±3% accuracy and verified through extensive testing to ensure consistent performance. Perfect for spark plugs, bike components, and automotive repair.
- 【Laser-Etched Dual Scale｜Clear & Easy to Read】 This mini torque wrench features high-contrast laser-etched Ft-Lb and Nm scales on a durable black surface, ensuring excellent readability in any lighting environment. Quick, accurate torque settings help improve efficiency for every repair task.
- 【Audible Click Feedback｜Crisp & Noticeable Sound】 When your preset torque is achieved, the HERONIX torque wrench produces a sharp, clear “click” sound (≈45 dB) you can hear and feel—eliminating guesswork and preventing over-tightening. Reliable feedback for both beginners and professionals.
- 【Compact 72-Tooth Design｜Smooth & Reversible】 Equipped with a 72-tooth reversible ratchet head, this small torque wrench supports both clockwise and counterclockwise operation. The compact 3/8 torque wrench head, quick-release mechanism, and ergonomic anti-slip handle make it ideal for tight spaces such as engine bays, bike frames, and underbody repairs.
- 【Multi-Scene Compatibility｜For Bike, Motorcycle & Car】 With its versatile torque range, this nm torque wrench is suitable for bicycles, motorcycles, spark plugs, automotive components, machinery assembly, and more. Whether working in your garage or performing on-road adjustments, HERONIX delivers the dependable performance every mechanic and DIY user can trust.
- [MATERIAL] SUZUME torque wrenches are made of CR-V steel to ensure the durability of the torque wrench. The surface is also chrome-plated, which not only improves corrosion and wear resistance, but also gives the torque wrench set automotive a mirror-like luster, adding a touch of eye-catching beauty. For the handle, we chose a lightweight aluminum alloy, whose low-density characteristics greatly reduce the overall weight of the tool, making it easier to operate.
- [HIGH ACCURACY] The SUZUME 3PCS torque wrench set multiple sizes, covering torque wrench 1/2 drive,torque wrench 3/8 drive and 1/4 torque wrench, is each a commitment to superior workmanship. After rigorous fatigue testing, this torque wrench kit can withstand more than 10,000 repeated uses and still maintain an ±3% accuracy, which means you can use them with confidence and without worrying about re-calibration.
- [LOUD CLICK] SUZUME torquimetro are designed with a bi-directional ratchet head that makes it easy to apply precise torque, whether you operate the wrench clockwise or counterclockwise. When your operation reaches the preset torque value, the wrench will immediately emit a clear "click" sound, accompanied by a vibration, to ensure that you can sense and stop the operation at the first time, avoiding damage to bolts, nuts and even torque wrench' due to excessive application of force.
- [Dual-Scales] SUZUME strives for perfection in every detail of every product. This 6-piece torque wrench set includes: 1/2” torque wrench (10–170 ft.lb / 13.6–230.5 N.m), 3/8” torque wrench (5–45 ft.lb / 6.8–61 N.m), 1/4” torque wrench (20–220 in.lb / 2.3–24.9 N.m), plus 1/2” extension bar (5"), 3/8” extension bar (6") and 1/4” extension bar (4"). Every click torque wrench is equipped with a clearly visible torque scale that makes setting and reading torque values effortless. We use laser printing technology to ensure the durability of these scales, so you don't have to worry about the values becoming blurred by wear and tear, even under frequent use over a long period of time.
- [IDEAL PRESENT] Imagine a torque wrench set that can easily handle the repair needs of bicycles, motorbikes and cars! The SUZUME torque wrenches is just the solution you need. Whether you're tightening loose screws or performing complex mechanical repairs, this set is the ideal present for your father, husband or son, showing your support and understanding of their hobbies. Help him solve every challenge with ease
- PRECISION - Ships pre-calibrated to +/- 4% accuracy and ready to use. Include calibration certificate with traceable serial number.
- DURABLE - Reinforced ratchet gear head constructed from hardened, heat treated Chrome Vanadium alloy steel.
- LONG-LASTING - Rust & corrosion protection with our unique and newly invented Electro-Black finish treatment.
- PERFORMANCE - Features an easy-to-read, highlighted yellow print dual-range scale. Identify the markings even in low-light conditions.
- COMFORTABLE - Comes with a reversible ratchet head that drives in both directions and measure torque in a clockwise direction.
SEOCONTENT-START
MACK TRUCKS RECALL ALERT © 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. Description Certain 2024 MD6 and MD7 model vehicles were manufactured from June 23, 2023 to July 21, 2023 when improperly calibrated torque tooling was in use. Under-torqued fasteners can result in loss of clamp load, which may affect the steering and potentially cause loss of vehicle control. There have been no field reports, warranty claims or customer complaints associated with this issue. The remedy will be to tighten the steering gear fasteners to specification. Model and Model Years Affected • Certain 2024 Mack MD6 and MD7 model vehicles manufactured June 23, 2023 through July 21, 2023. Vehicle Quantities • 409 vehicles (395 US, 14 Canada) Dealer Responsibilities • The National Traffic and Motor Vehicle Safety Act and Canadian Motor Vehicle Safety Act require 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 September 1, 2023. • Owner notification letters will be released on or before October 23, 2023. • Repair Instruction will be released once they are available. Contact If you have questions or concerns about this recall, contact the Regulatory Affairs Department at vtna.regulatoryaffairs@volvo.com. Subject: Safety Recall SC0449, MMD Steering Gear Torque Recall Number: SRA-M449 Date: September 1, 2023 Applicable Markets: ☒U.S. ☒Canada ☐ Export
**************************************************************************************************************
OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-605 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Mack Trucks, Inc. Submission Date : AUG 30, 2023 NHTSA Recall No. : 23V-605 Manufacturer Recall No. : SC449 Manufacturer Information : Manufacturer Name : Mack Trucks, Inc. Address : 2100 Mack Boulevard PO Box M Allentown PA 18105-5000 Company phone : 610-709-2131 Population : Number of potentially involved : 395 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2024-2024 Mack MD6 and MD7. Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : UNKNOWN Power Train : DIESEL Descriptive Information : Certain 2024 MD 6 and MD 7 models manufactured from June 23, 2023 and July 21, 2023 when improperly calibrated torque tooling was in use. The number of affected vehicles is 395. Production Dates : JUN 23, 2023 – JUL 21, 2023 VIN Range 1 : Begin : 1M2MDBAA5RS010044 End : 1M2MDBAA6RS012417 ✔ Not sequential Description of Defect : Description of the Defect : The steering gear fasteners may not be torqued to specification. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : Under-torqued fasteners can result in loss of clamp load, which may affect the steering and potentially cause loss of vehicle control. There have been no reports of accidents or loss of vehicle control associated with this condition. Description of the Cause : Manufacturing issue. Torque tool used in tightening steering gear fasteners was improperly calibrated and final assembly torque was not to specification. Identification of Any Warning that can Occur : Loose fasteners are detectable during visual inspection, driver alignment and the driver may be able to discern that there is an issue felt in the steering/ handling of the vehicle. Involved Components : Part 573 Safety Recall Report 23V-605 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : M20*140 Component Description : HEXAGON SCREW Component Part Number : 00992482 Supplier Identification : Component Manufacturer Name : Mack Trucks Address : 7825 National Service Rd. Greensboro North Carolina 27409-9667 Country : United States Chronology : August 15 2023 Mack Manufacturing Engineering reports to Product Safety Working Group that Mack Medium Duty assembly plant has reported that the have a potential under torque situation on steering gear fasteners, an investigation is opened at that time. August 21, 2023 Product Safety Working Group meets and evaluates the investigation results and recommends that this be brought to Product Safety Committee as a potential product safety defect. August 25, 2023 Product Safety Committee meets and decides that a product safety defect exists. August 30, 2023 573 Report filed with NHTSA. There have been no field reports, warranty claims or customer complaints associated with this issue. Description of Remedy : Description of Remedy Program : Remedy program will be to tighten the steering gear fasteners to specification Reimbursement for the recall will be covered by Manufacturer’s Reimbursement Plan on file with NHTSA. How Remedy Component Differs from Recalled Component : The remedy, component fasteners will be properly tightened to specification. 00992482, HEXAGON SCREW, M20*140 Identify How/When Recall Condition was Corrected in Production : Torque assembly tooling in our factory was corrected on August 4, 2023. Recall Schedule : Part 573 Safety Recall Report 23V-605 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Recall Schedule : Dealer notification will begin on September 4, 2023 and owner notification will begin on or before October 23, 2023 Planned Dealer Notification Date : SEP 04, 2023 – SEP 04, 2023 Planned Owner Notification Date : OCT 23, 2023 – OCT 23, 2023 * NR – Not Reported
**************************************************************************************************************
OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-605 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Mack Trucks, Inc. Submission Date : SEP 06, 2023 NHTSA Recall No. : 23V-605 Manufacturer Recall No. : SC449 Manufacturer Information : Manufacturer Name : Mack Trucks, Inc. Address : 2100 Mack Boulevard PO Box M Allentown PA 18105-5000 Company phone : 610-709-2131 Population : Number of potentially involved : 395 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2024-2024 Mack MD6 and MD7. Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : UNKNOWN Power Train : DIESEL Descriptive Information : Certain 2024 MD 6 and MD 7 models manufactured from June 23, 2023 and July 21, 2023 when improperly calibrated torque tooling was in use. The number of affected vehicles is 395. Production Dates : JUN 23, 2023 – JUL 21, 2023 VIN Range 1 : Begin : 1M2MDBAA5RS010044 End : 1M2MDBAA6RS012417 ✔ Not sequential Description of Defect : Description of the Defect : The steering gear fasteners may not be torqued to specification. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : Under-torqued fasteners can result in loss of clamp load, which may affect the steering and potentially cause loss of vehicle control and an increased risk of a crash. There have been no reports of accidents or loss of vehicle control associated with this condition. Description of the Cause : Manufacturing issue. Torque tool used in tightening steering gear fasteners was improperly calibrated and final assembly torque was not to specification. Identification of Any Warning that can Occur : Loose fasteners are detectable during visual inspection, driver alignment and the driver may be able to discern that there is an issue felt in the steering/ handling of the vehicle. Involved Components : Part 573 Safety Recall Report 23V-605 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : M20*140 Component Description : HEXAGON SCREW Component Part Number : 00992482 Supplier Identification : Component Manufacturer Name : Mack Trucks Address : 7825 National Service Rd. Greensboro North Carolina 27409-9667 Country : United States Chronology : August 15 2023 Mack Manufacturing Engineering reports to Product Safety Working Group that Mack Medium Duty assembly plant has reported that the have a potential under torque situation on steering gear fasteners, an investigation is opened at that time. August 21, 2023 Product Safety Working Group meets and evaluates the investigation results and recommends that this be brought to Product Safety Committee as a potential product safety defect. August 25, 2023 Product Safety Committee meets and decides that a product safety defect exists. August 30, 2023 573 Report filed with NHTSA. There have been no field reports, warranty claims or customer complaints associated with this issue. Description of Remedy : Description of Remedy Program : Remedy program will be to tighten the steering gear fasteners to specification Reimbursement for the recall will be covered by Manufacturer’s Reimbursement Plan on file with NHTSA. How Remedy Component Differs from Recalled Component : The remedy, component fasteners will be properly tightened to specification. 00992482, HEXAGON SCREW, M20*140 Identify How/When Recall Condition was Corrected in Production : Torque assembly tooling in our factory was corrected on August 4, 2023. Recall Schedule : Part 573 Safety Recall Report 23V-605 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Recall Schedule : Dealer notification will begin on September 4, 2023 and owner notification will begin on or before October 23, 2023 Planned Dealer Notification Date : SEP 04, 2023 – SEP 04, 2023 Planned Owner Notification Date : OCT 23, 2023 – OCT 23, 2023 * NR – Not Reported
**************************************************************************************************************
OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-605 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Mack Trucks, Inc. Submission Date : SEP 06, 2023 NHTSA Recall No. : 23V-605 Manufacturer Recall No. : SC0449 Manufacturer Information : Manufacturer Name : Mack Trucks, Inc. Address : 2100 Mack Boulevard PO Box M Allentown PA 18105-5000 Company phone : 610-709-2131 Population : Number of potentially involved : 395 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2024-2024 Mack MD6 and MD7. Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : UNKNOWN Power Train : DIESEL Descriptive Information : Certain 2024 MD 6 and MD 7 models manufactured from June 23, 2023 and July 21, 2023 when improperly calibrated torque tooling was in use. The number of affected vehicles is 395. Production Dates : JUN 23, 2023 – JUL 21, 2023 VIN Range 1 : Begin : 1M2MDBAA5RS010044 End : 1M2MDBAA6RS012417 ✔ Not sequential Description of Defect : Description of the Defect : The steering gear fasteners may not be torqued to specification. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : Under-torqued fasteners can result in loss of clamp load, which may affect the steering and potentially cause loss of vehicle control and an increased risk of a crash. There have been no reports of accidents or loss of vehicle control associated with this condition. Description of the Cause : Manufacturing issue. Torque tool used in tightening steering gear fasteners was improperly calibrated and final assembly torque was not to specification. Identification of Any Warning that can Occur : Loose fasteners are detectable during visual inspection, driver alignment and the driver may be able to discern that there is an issue felt in the steering/ handling of the vehicle. Involved Components : Part 573 Safety Recall Report 23V-605 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : M20*140 Component Description : HEXAGON SCREW Component Part Number : 00992482 Supplier Identification : Component Manufacturer Name : Mack Trucks Address : 7825 National Service Rd. Greensboro North Carolina 27409-9667 Country : United States Chronology : August 15 2023 Mack Manufacturing Engineering reports to Product Safety Working Group that Mack Medium Duty assembly plant has reported that the have a potential under torque situation on steering gear fasteners, an investigation is opened at that time. August 21, 2023 Product Safety Working Group meets and evaluates the investigation results and recommends that this be brought to Product Safety Committee as a potential product safety defect. August 25, 2023 Product Safety Committee meets and decides that a product safety defect exists. August 30, 2023 573 Report filed with NHTSA. There have been no field reports, warranty claims or customer complaints associated with this issue. Description of Remedy : Description of Remedy Program : Remedy program will be to tighten the steering gear fasteners to specification Reimbursement for the recall will be covered by Manufacturer’s Reimbursement Plan on file with NHTSA. How Remedy Component Differs from Recalled Component : The remedy, component fasteners will be properly tightened to specification. 00992482, HEXAGON SCREW, M20*140 Identify How/When Recall Condition was Corrected in Production : Torque assembly tooling in our factory was corrected on August 4, 2023. Recall Schedule : Part 573 Safety Recall Report 23V-605 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Recall Schedule : Dealer notification will begin on September 4, 2023 and owner notification will begin on or before October 23, 2023 Planned Dealer Notification Date : SEP 04, 2023 – SEP 04, 2023 Planned Owner Notification Date : OCT 23, 2023 – OCT 23, 2023 * NR – Not Reported
**************************************************************************************************************
**************************************************************************************************************
**************************************************************************************************************
SEOCONTENT-END
This product presentation was made with AAWP plugin.