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March 20, 2019
Engine Fuel Heater May Overheat and Cause Fire
A fire increases the risk of injury. An engine stall can increase the risk of crash.
NHTSA Campaign Number: 19V216
Manufacturer Navistar
, Inc.
Components FUEL SYSTEM, DIESEL
Potential Number of Units Affected 23,122
Summary
Navistar, Inc. (Navistar) is recalling certain 2017-2020 International DuraStar and WorkStar, 2018-2020 IC Bus CECB, International HV and MV, 2018-2019 IC Bus 1300 FBC and HCCB, and 2019-2020 IC Bus TCCB vehicles equipped with Cummins B6.7 diesel engines with fuel module option number FS90301 or FS90453. The electric fuel heater within the fuel module may overheat and cause plastic in the fuel heater to melt and potentially catch fire. It may also lead to engine stalling.
Remedy
Cummins will notify the affected Navistar owners. A temporary field action will involve removing the fuse for the fuel heater and replacing any fuel heater found with signs of damage or fuel leakage with a temporary cavity plug. Customers will be renotified once Cummins determines a final remedy. The recall began May 2, 2019. Owners may contact Cummins customer service at 1-800-286-6467 or Navistar customer service at 1-800-448-7825.
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.
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| Engine Serial Number | Vehicle Model | Vehicle Identification Number |
| 74094787 | 4300 4X2 | 3HAMMM |
Customer:
This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act.
Cummins Inc. has decided that a defect which relates to motor vehicle safety exists in certain B6.7 diesel engines that were manufactured between December 16, 2015 and February 25, 2019 and equipped with fuel module option FS90301 or FS90453.
This notice applies to your engine(s) listed on the enclosed Engine/Vehicle list.
Fuel module options FS90301 and FS90453 contain an electric fuel heater. Internal electrical arcing within the fuel heater may create sufficient heat inside the fuel heater to cause plastic in the fuel heater to melt and potentially catch fire. It may also cause an engine stall. A fire, if undetected and uncontained, presents an increased risk of personal injury. An unexpected engine stall may increase the risk of a crash. If this condition exists, melting of the fuel heater may be visible during a service event, smoke may precede or accompany a fire or the engine may become increasingly difficult to start.
Cummins is currently developing a permanent remedy for this issue. You will receive a second notification to inform you when the final remedy is available and to provide instructions to schedule the recall for your engine.
In the meantime, Cummins advises you to take the following actions to mitigate the safety risk:
- Locate the fuel filter module and fuel heater at the driver’s side front of the engine as shown in Figure 1 below.
- Inspect the heater and module for any signs of damage or fuel leakage.
- If there is no damage or leakage after engine shutdown, remove the fuel heater fuse as shown in Figures 2 or 3 below (based on application) and leave the wiring harness connected.
- In the event there are signs of damage OR leakage, contact your local Cummins service location at the number below to have a heater plug kit installed. (Reference TSB190038)
Distributor or authorized warranty dealer. You may also contact Cummins Care at 1-800CUMMINS (1-800-286-6467), or visit our website at care.cummins.com.
If you have a complaint relative to this recall, you may report it to the following:
Administrator
National Highway Traffic Safety Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
You may also call the toll-free Vehicle Safety Hotline at 1-888-327-4236 (TTY: 1-800-424-9153); or go to https://www.safercar.gov.
If you are no longer the owner of the engine or vehicle listed in the table below, please forward this notice to the new owner or provide the new owner’s contact information to Cummins so that we can notify them of this recall.
Cummins is taking this action in the interest of safety and satisfaction with our products. We apologize for any inconvenience and thank you for your attention to this matter.
Sincerely,
Campaign Administrator Cummins Inc.
Figure 1 – Location of Fuel Filter Module & Heating Element
- Fuel Heater
- Cable Tie
- Electrical Connector
® CE Bus Fuse Removal Instructions
- Locate red Maxi Fuse on dash panel. See Figure below.
- Remove fuse cap and discard red Maxi Fuse. See Figure below.
- Reinstall fuse cap. Do not replace fuse. See Figure below.
- Retain fuse for reinstallation once final remedy is performed.
® MV/HV Fuse Removal Instructions Remove fuse.
- Remove cover of fuse box, located on passenger side dashboard as indicated in the photo below.
- Remove 20 amp fuse located at B8-J cavity 17-21 as indicated in the photo below.
- Remove 40 amp fuse located at 2C cavity as indicated in the photo below..
- Retain fuses for reinstallation once final remedy is performed.
® MV/HV.
Location of 40A Fuse on Navistar® MV/HV
Fuel Heater May Overheat and Cause Fire – Cummins B6.7 Medium Duty Diesel Engines
Fuel Heater May Overheat and Cause Fire – Cummins B6.7 Medium Duty Diesel Engines
23 Affected Products
Vehicles
| IC BUS | 1300 FBC | 2018-2019 |
| IC BUS | CE | 2018-2020 |
| IC BUS | HC | 2018-2019 |
| IC BUS | TC | 2019-2020 |
| INTERNATIONAL | DURASTAR | 2017-2020 |
| INTERNATIONAL | HV | 2018-2020 |
| INTERNATIONAL | MV | 2018-2020 |
| INTERNATIONAL | WORKSTAR | 2017-2020 |
3 Associated Documents
Owner Notification Letter(Part 577)
RCONL-19V216-0394.pdf 1470.187KB
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Defect Notice 573 Report
RCLRPT-19V216-4917.PDF 219.475KB
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Recall Acknowledgement
RCAK-19V216-3024.pdf 245.974KB
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