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November 19, 2019 NHTSA CAMPAIGN NUMBER: 19V831000
Flex Plate Fasteners Improperly Torqued
The loose bolts can become lodged in the starter, disabling the bus, resulting in an evacuation in an uncontrolled traffic situation, increasing the risk of an injury.
NHTSA Campaign Number: 19V831
Manufacturer Daimler Trucks North America LLC
Components POWER TRAIN
Potential Number of Units Affected 30
Summary
Daimler Trucks North America LLC (DTNA) is recalling certain 2018-2020 Thomas Built Saf-T-Liner HDX school buses equipped with Detroit DD8 Engines and Allison Transmissions. The Flex-Plate/Torque Converter fasteners may have been insufficiently tightened.
Remedy
DTNA will notify owners, and dealers will inspect and tighten the fasteners, as necessary, free of charge. DTNA issued owners an interim notification on December 13, 2019. The recall began August 7, 2020. Owners may contact DTNA customer service at 1-800-547-0712. DTNA’s number for this recall is FL-839.
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.safercar.gov.
Check for Daimler Trucks North America Recalls
Daimler Trucks
North America LLC
August 2020 FL839A
NHTSA #19V-831
IMPORTANT SAFETY RECALL
See enclosed VIN list
Subject: TBB Torque Converter Bolts
This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act.
Daimler Trucks North America LLC, on behalf of its wholly owned subsidiary, Thomas Built Buses, has decided that a defect which relates to motor vehicle safety exists on specific Model Year 2018-2020 Thomas Built Buses Safe-T-Liner HDX school buses manufactured May 3, 2017, through April 17, 2019, and equipped with a Detroit Diesel DD8 engine and an Allison transmission.
On certain school buses, the flex plate/torque converter fasteners may not have been properly torqued at the plant. Improperly torqued fasteners may diminish the clamp load and become broken or dislodged. Loose or broken bolts may cause illumination of the CEL, damage to the flex plate, or become lodged in the starter, which may disable the school bus. This could result in an evacuation in an uncontrolled traffic situation and increase the risk of injury.
The torque converter bolts, located at the engine/transmission mating point, will be replaced.
This is the second letter regarding this recall to let you know the repair is now available. To arrange for repairs, you should contact your local Thomas Built Buses dealer immediately. The repair should take approximately an hour, and will be performed at no charge to you.
You may be liable for any progressive damage that results from your failure to complete the Recall within a reasonable time after receiving notification.
If you have any questions about this recall, please contact the Warranty Campaigns Department at (800) 547-0712, 7:00 a.m. to 4:00 p.m. Pacific Time, Monday through Friday. If you are not able to have the defect remedied without charge and within a reasonable time, you may wish to submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, SE., Washington, DC 20590; or call the Vehicle Safety Hotline at (888) 3274236 (TTY: (800) 424-9153); or to https://www.safercar.gov.
We regret any inconvenience this action may cause but feel certain you understand our interest in motor vehicle safety.
WARRANTY CAMPAIGNS DEPARTMENT
Enclosure
Reimbursement to Customers for Repairs Performed Prior to Recall
If you have already paid to have this recall condition corrected you may be eligible to receive reimbursement.
Requests for reimbursement may include parts and labor. Reimbursement may be limited to the amount the repair would have cost if completed by an authorized Daimler Trucks North America LLC dealer. The following documentation must be presented to your dealer for consideration for reimbursement.
Please provide original or clear copies of all receipts, invoices, and repair orders that show:
- The name and address of the person who paid for the repair.
- The Vehicle Identification Number (VIN) of the vehicle that was repaired.
- What problem occurred, what repair was done, when the repair was done.
- Who repaired the vehicle.
- The total cost of the repair expense that is being claimed.
- Proof of payment for the repair (such as the front and back of a cancelled check or a credit card receipt).
Reimbursement will be made by check from your Daimler Trucks North America LLC dealer. Please speak with your Thomas Built Buses authorized dealer concerning this matter.
Daimler Trucks
North America LLC
December 2019
FL839
Interim Recall Notice NHTSA #19V-831
IMPORTANT SAFETY RECALL
See enclosed VIN list
Subject: TBB Torque Converter Bolts
This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act.
Daimler Trucks North America LLC, on behalf of its wholly owned subsidiary, Thomas Built Buses, Inc., has decided that a defect which relates to motor vehicle safety exists on specific Model Year 2018-2020 Thomas Built Buses Saf-T-Liner HDX school buses manufactured May 3, 2017, through April 17, 2019, equipped with a Detroit Diesel DD8 engine and an Allison transmission.
On certain school buses, the flex plate/torque converter fasteners may not have been properly torqued at the plant. Improperly torqued fasteners may diminish the clamp load and become broken or dislodged. Loose/broken bolts may cause illumination of the CEL, damage to the flex plate, or become lodged in the starter, which may disable the school bus. This could result in an evacuation in an uncontrolled traffic situation and increase the risk of injury.
This is the first of two notices you will receive regarding this subject. This letter is to inform you of an upcoming recall to correct the issue noted above. The repair is being validated and parts are being procured. There is no action for you to take at this time. You may continue to operate your vehicle.
The second notice will inform you when the final remedy is available. When you receive the second notice, please contact your authorized Thomas Built Buses dealer to schedule the Recall for your vehicle.
If you have any questions about this recall, please contact the Warranty Campaigns Department at (800) 547-0712, 7:00 a.m. to 4:00 p.m. Pacific Time, Monday through Friday. If you are not able to have the defect remedied without charge and within a reasonable time, you may wish to submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, SE., Washington, DC 20590; or call the Vehicle Safety Hotline at (888) 3274236 (TTY: (800) 424-9153); or to https://www.safercar.gov.
We regret any inconvenience this action may cause but feel certain you understand our interest in motor vehicle safety.
WARRANTY CAMPAIGNS DEPARTMENT
Enclosure
SEOCONTENT-START
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Defect Information Report
(Section 573.6)
FL-839
Date of Submission: November 19, 2019
Manufacturer: Daimler Trucks North America LLC
P.O. BOX 3849
Portland, Oregon 97208
Type of Report: X Safety Defect 0 Non-Compliance
Vehicle Information
Model Yr. Start: 2018
Make: Thomas Built Buses
Model: Saf-T-Liner HDX
Production Dates: Begin: 05/03/2017
Model Yr. End: 2020
End: 04/17/2019
Descriptive Information: Certain Thomas Built Buses Saf-T-Liner HDX School Buses equipped with a
Detroit 008 Engine and an Allison Transmission.
Number potentially involved: 30 Estimated percentage of involve with defect: 100%
Defect/ Noncompliance Description
For this Defect/Noncompliance:
Describe the defect or noncompliance: On certain school buses, the Flex-Plate/Torque Converter
fasteners may not have been properly torqued at the plant. Improperly torqued fasteners at the flex
plate may diminish the clamp load and can become broken or dislodged within the flywheel housing.
If a noncompliance, provide the applicable FMVSS: N/ A
0 Check if this recall only affects products in certain geographic regions.
Describe the safety risk:
If the torque converter bolts are loose or cross threaded, bolts may fall into the flywheel housing. The
loose bolts may lead to illumination of the CEL, damage to the flex plate, or become lodged into the
starter, which could result in a disabled school bus and result in a school bus evacuation procedure in an
uncontrolled traffic situation, increasing the risk of an injury.
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DAIMLER —~:~.:-.5~::· .
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Chronology of Defect/ Noncompliance Determination
Provide the chronology of events leading up to the defect decision or test data for the
noncompliance decision.: July 2019, DTNA received two reports from the field of broken fasteners in
the flywheel housing on school buses being delivered from the school bus manufacturing plant to the
dealership. The issue was communicated to the school bus manufacturing plant requesting an inspection
to identify potential scope of the issue. July – August 2019, 33 school buses were inspected at the plant.
The inspection indicated all school buses had correctly torqued flex plate/torque converter bolts. August
2019, Thomas Built Buses updated the manufacturing process to ensure the correct torque and loc-tite
was being applied on the flex plate/torque converter bolts as per vehicle specification. August –
November 2019, DTNA began evaluating the process to determine if the bolts were properly installed
and backed out or if the bolts were not properly installed on the reported busses. DTNA evaluated torque
sequence, loc-tite application, and continued to monitor warranty claims and field reports for additional
complaints. The review of field complaints indicated no additional claims outside of the initial two school
buses reported with broken flex-plate/torque converter fasteners. November 12, 2019, DTNA with an
abundance of caution, decided to conduct a voluntary recall campaign on certain school buses that may
have incorrectly torqued Flex-Plate/Torque Converter fasteners.
Identify the Remedy
Describe the defect/noncompliance remedy program, including the manufacture’s plan for
reimbursement.: The Flex Plate/Torque Converter fasteners will be inspected and repaired if necessary
on the identified School buses. Repairs will be performed by Daimler Trucks North America authorized
service facilities. Customer notification will be done by first class mail using Daimler Trucks North
America records to determine the customers affected. Details of the reimbursement plan will be included
in the owner’s notification letter.
Identify the Recall Schedule
Describe the recall schedule for notifications.: Customer notification will be made by first class mail
using Daimler Trucks North America records to determine the customers affected.
Planned Dealer Notification Begin· Date:
Planned Dealer Notification End Date:
Planned Owner Notification Begin Date:
01/17/2020
01/17/2020
01/17/2020
Planned Owner Notification End Date: 01/17/2020
Manufacture’s identification code for this recall (if applicable): FL-839
Andy Jones
Manager
Compliance and Regulatory Affairs
******************************************************
The information contained in this letter supercedes and supplements any related policies and procedures in any previously
released bulletins, the Warranty Manual, and/or previously released letters. Failure to read or distribute this letter will not
exempt addressees from compliance with the information contained herein.
Page 1 of 2
Daimler Trucks North America LLC
REF #:
ICI19-063
Effective:
12/13/2019
Release:
12/09/2019
SUBJECT:
TBB FL839 – Interim Recall Notice
This letter is to inform you that an interim recall notice will be sent to affected customers for upcoming Thomas Built Buses recall FL839 ~ TBB Torque Converter Bolts. The interim notices mail by 12/13/2019. A copy of the notice follows for reference.
This notice is for informational purposes only. There is no action for customers or dealers to take at this time. If customers inquire, please refer them to the interim recall notice and let them know the recall will begin when all preparations are completed.
If you have questions or need further information, contact the Warranty Campaigns Department by submitting an inquiry through the WSC Link on DTNAConnect.
WARRANTY CAMPAIGNS DEPARTMENT
P.O. Box 4090
800-547-0712
Portland, Oregon 97208-4090
ATTENTION: Dealer Principal, Warranty Manager, Service Manager, Parts Manager
Freightliner Dealers – U.S. and Canada
Western Star and Sterling Dealers – U.S. and Canada
FCCC Dealers – U.S. and Canada
Direct Warranty Customers – U.S. and Canada
Export Distributors
If you have questions about this Letter, please submit your inquiry on the Web using the WSC Link on DTNAConnect
Daimler Trucks
North America LLC
December 2019
FL839
Interim Recall Notice
NHTSA #19V-831
IMPORTANT SAFETY RECALL
See enclosed VIN list
Subject: TBB Torque Converter Bolts
This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act.
Daimler Trucks North America LLC, on behalf of its wholly owned subsidiary, Thomas Built Buses, Inc., has decided
that a defect which relates to motor vehicle safety exists on specific Model Year 2018-2020 Thomas Built Buses
Saf-T-Liner HDX school buses manufactured May 3, 2017, through April 17, 2019, equipped with a Detroit Diesel DD8
engine and an Allison transmission.
On certain school buses, the flex plate/torque converter fasteners may not have been properly torqued at the plant.
Improperly torqued fasteners may diminish the clamp load and become broken or dislodged. Loose/broken bolts may
cause illumination of the CEL, damage to the flex plate, or become lodged in the starter, which may disable the school
bus. This could result in an evacuation in an uncontrolled traffic situation and increase the risk of injury.
This is the first of two notices you will receive regarding this subject. This letter is to inform you of an upcoming recall to
correct the issue noted above. The repair is being validated and parts are being procured. There is no action for you to
take at this time. You may continue to operate your vehicle.
The second notice will inform you when the final remedy is available. When you receive the second notice, please
contact your authorized Thomas Built Buses dealer to schedule the Recall for your vehicle.
If you have any questions about this recall, please contact the Warranty Campaigns Department at (800) 547-0712,
7:00 a.m. to 4:00 p.m. Pacific Time, Monday through Friday. If you are not able to have the defect remedied without
charge and within a reasonable time, you may wish to submit a complaint to the Administrator, National Highway Traffic
Safety Administration, 1200 New Jersey Avenue, SE., Washington, DC 20590; or call the Vehicle Safety Hotline at
(888) 3274236 (TTY: (800) 424-9153); or to https://www.safercar.gov.
We regret any inconvenience this action may cause but feel certain you understand our interest in motor vehicle safety.
WARRANTY CAMPAIGNS DEPARTMENT
Enclosure
Daimler Trucks North America LLC
Thomas Built Buses, Inc.
1408 Courtesy Road
High Point, NC 27260
800.547.0712 Phone
3 Affected Products
Vehicle
MAKE | MODEL | YEAR |
THOMAS BUILT BUSES | SAF-T-LINER HDX | 2018-2020 |
7 Associated Documents
ISSUED Interim Owner Notification Letter(Part 577)
RIONL-19V831-4468.pdf 44.896KB
Manufacturer Notices(to Dealers,etc)
Defect Notice 573 Report
RCLRPT-19V831-7810.PDF 213.7KB
Recall Acknowledgement
RCAK-19V831-8020.pdf 244.864KB
Miscellaneous Document- 573 Defect Information Report
RMISC-19V831-0793.pdf 534.647KB
Owner Notification Letter(Part 577)
RCONL-19V831-5920.pdf 51.402KB
Recall Quarterly Report #1, 2020-3
RCLQRT-19V831-0521.PDF 211.141KB
Latest Recalls Documents
For the Latest and Most Recent Recalls Information Visit the link below…
https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=19V831&docType=RCL
- Durable Ratchet Head: Made from Hardened treated Chrome Vanadium steel alloy (Cr-V) Corrosion-Retardant: Satin Finish. Made in Taiwan
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- Simple and Reliable: “Click” sound tells the preset torque value is reached. Stop applying force when you hear and feel it.
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- COMFORTABLE - Comes with a reversible ratchet head that drives in both directions and measure torque in a clockwise direction.
- ±3% HIGH PRECISION AND COOL APPEARANCE: 1/2 inch drive torque wrench (10-170ft.-lb/13.6-230.5Nm)has a calibration error range of ±3%, high precision, and comes with a corresponding serial number, which is easy to trace the original data, and you can use it with confidence.Hairich torque wrench not only has superior quality but also has a superior appearance. The classic combination of black and red is fashionable and textured, allowing you to enjoy a visual feast during use.
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- ERGONOMIC DESIGN AND POWERFUL: Every design of our industrial torque wrench conforms to ergonomic, easy to handle.72-tooth ratchet, 5° ratcheting arc head, a quick-release button for easy loading and unloading, and an aluminum non-slip handle for excellent grip and control. A recent research review that, 72-tooth ratchets are very professional tooth ratchets, you just only rotate 5 degrees to finish it. Not easy to slip and wear, can be used in small spaces, and is more durable and powerful.
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- 【High Precision&Quick Reading】: 3/8 torque wrench has high contrast and dual range scale( 5-45 Ft-Lb/6.8-61 Nm),making it clear and easy to read. We have professional torque wrench production technology, and after 20000 tests, the calibration error range of the torque wrench is ± 3%, making it an essential helper for you.
- 【Safe and Reliable Operation】: Equipped with a bidirectional drive ratchet head, torque can be measured clockwise or counterclockwise. When the set torque value is reached, a "click" sound will remind you to stop applying force to prevent damage to the item due to excessive torque.
- 【High Quality and Durable Material】: Made of hardened chromium vanadium steel alloy (Cr-V). At the same time, the bottom buckle tail plug adopts a red anodizing process to improve the product's oxidation resistance during use and enhance surface wear resistance. 72 tooth ratchet head, made of chromium molybdenum steel. High quality materials resist corrosion and are durable.
- 【Quick Torque Setting】: Simple and fast torque setting, pull down the locking knob and hold it down to rotate to the torque you need. Release the hand and the locking knob will automatically rebound to lock the torque value. And the designer referred to the appearance of the flashlight handle and designed a non slip and labor-saving knurled handle, making it more comfortable and easy to hold when using.
- 【Easy to Store and Widely Use】: You will receive the 3/8-inch drive click torque wrench with a sturdy plastic shell storage box, which is very delicate and durable. Torque wrench is suitable nuts and bolts on various occasions, such as bike, motorcycle, car spark, and is the best helper for you🎁. 🔔 And we provide 12 months warranty. If you have any questions, please feel free to contact us.
- 【3Pcs Torque Wrench Set】 The calibration error range is ±3%, each torque wrench has a calibration certificate. The 3-in-1 torque wrench set can meet your different needs. Including 1/4 inch 20-240in.lb, 3/8 inch 5-45ft.lb, 1/2 inch 20-160ft.lb.
- 【Safe & Reliable】 When the 1/2 torque wrench reaches the preset torque value, it makes a clear "click" sound, accompanied by an obvious hand vibration that reminds you no longer to apply force, prevent damage caused. 72-tooth reversible ratchet head, it can be used both clockwise and counterclockwise directions.
- 【Quick Release Button】 This 3/8 torque wrench has a quick release button with which accessories can easily be installed and removed, the accessories can grip and is not easy to fall down. It is more convenient to use. The torque wrench is made of CR-MO with a higher hardness.
- 【Easy to Set】First pull down the locking knob and hold it down and then start setting the desired torque value. Release the hand and the locking knob will automatically rebound to lock the torque value. If you do not use, please set the torque key to the minimal torque value.
- 【Widely Use】The torque wrenches can satisfy you in bicycle, motorcycle, car, truck and wheel screws, wheel nuts and in the device installation, electrical engineering, etc. We provide 12 months warranty. If you have any questions, please feel free to contact us.
- PORTABILITY: Torque wrench 1/2 inch drive has a durable case for portability or storage
- ADDED COMFORT: Bi-material handle for comfort and grip of the 1/2 torque wrench
- HASSLE FREE USE: Locking feature adjusts quick and easily for hassle free use
- QUICK IDENTIFICATION: Scales stamped into housing showing inch and metric torque settings
- Meets or Exceeds ASME Specifications
- 🔧【𝐌𝐢𝐥𝐢𝐭𝐚𝐫𝐲-𝐠𝐫𝐚𝐝𝐞 𝐒𝐭𝐞𝐞𝐥】ETOOLAB torque wrench utilizes military-grade steel as its base material, coupled with professional surface rust protection methods tailored to usage habits. While ensuring user comfort, it enhances product strength, wear resistance, and rust resistance. offers a more comfortable experience and a longer lifespan!
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- Includes 1-pc. 3/8 in. drive torque wrench; Storage case; Product manual with torque conversion chart
- Wrench emits a click that can be heard and felt when the preset value is reached
- Permanently marked, high-contrast dual-range scale is easy to read, even in low light
- Reversible ratchet head drives in both directions and measures torque in clockwise direction
- Durable all-steel construction has no plastic parts to break or wear out
- Includes 1-pc. 1/4 in. drive micrometer torque wrench (20-200 in.-lb.) with storage case and product manual; 1-pc. 3/8 in. drive micrometer torque wrench (10-80 ft.-lb.) with storage case and product manual; 1-pc. 1/2 in. drive micrometer torque wrench (25-250 ft.-lb.) with storage case and product manual
- Wrenches emit a click that can be heard and felt when the preset value is reached
- Permanently marked, high-contrast dual-range scale is easy to read, even in low light
- Reversible ratchet heads drive in both directions and measure torque in clockwise direction
- Durable all-steel construction has no plastic parts to break or wear out
- 【PRECISION】 - Ships pre-calibrated to +/- 4% accuracy and ready to use. Include calibration certificate . Before shipping, we take 200 times calibration tests to make sure all wrenches performance well .
- 【DURABLE】 - Reinforced ratchet gear head constructed from hardened, heat treated Chrome Vanadium alloy steel.
- 【 RELIABLE & SAFE】: When small torque wrench set torque value is reached, the wrench will emits slight click sound to remind you to stop applying force to prevent overtorque damage to your items.
- 【LONG-LASTING】 - Rust & corrosion protection with our unique and newly invented Chrome finish treatment.
- 【 DUAL-DIRECTION MEASURES & WIDE USE】: The paddle of the mini torque wrench head can adjust the direction of use at any time,so that the wrench can be used both clockwise and counterclockwise directions. More widely used for Installation equipment, Electrical engineering, bicycle/motorcycle maintenance, Product assembly.With a storage box and an instruction manual.
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