45-066
Service Bulletin Details
Public Details for: 45-066
A testing procedure has been created for the coolant level sensor on model 520.
- 2024 - 2023 - 2022 - 2021 - 2020 - 2019 - 2018 - 2017 -
Models from 2024
| 2024 PETERBILT 579 |
Models from 2023
| 2023 PETERBILT 520 |
| 2023 PETERBILT 579 |
Models from 2022
| 2022 PETERBILT 520 |
| 2022 PETERBILT 579 |
Models from 2021
| 2021 PETERBILT 579 |
Models from 2020
| 2020 PETERBILT 579 |
Models from 2019
| 2019 PETERBILT 579 |
Models from 2018
| 2018 PETERBILT 579 |
Models from 2017
| 2017 PETERBILT 579 |
10/17/23, 9:15 AM Vehicle Service Bulletin 45-066 M520 Coolant Level Sensor Testing Procedure 10/17/2023 Edit Clone 45-066 Due to the lack of coolant level sensor diagnostic procedures, sensors are being replaced and faulty sensors are sent back to the manufacturer where they are analyzed and determined NTF (No Trouble Found). Due to the high incidence of NTF for these sensors, diagnostic procedures have been created and are now available. Subject 45-066 M520 Coolant Level Sensor Testing Procedure Whats New Abstract A testing procedure has been created for the coolant level sensor on model 520. Chassis Affected All Peterbilt 520 models built from 2022 through 2023. Action Information Only Due to the lack of coolant level sensor diagnostic procedures, sensors are being replaced and faulty sensors are sent back to the manufacturer where they are analyzed and determined NTF. Due to the high incidence of NTF for these sensors, diagnostic procedures have been created and are now available. Background A testing procedure has been created for the coolant level sensor on model 520. Using currently available coolant level sensor diagnostic procedures, sensors are being replaced and faulty sensors are sent back to the manufacturer where they are analyzed and determined NTF. Procedure Please follow your dealership's safety procedures and precautions to ensure the vehicle can be safely repaired and maintained. Remove sensor from coolant reservoir and wipe dry. Perform all sensor resistance value checks as specified in procedure below. If all resistant values are within range, sensor is functioning properly and should not be replaced. If any of the resistance values are not within the specified ranges, sensor can be considered failed. If returning sensor to supplier, be sure to report which resistance values were out of range and https://paccarnet.sharepoint.com/sitepages/vehsvcbltin.aspx?ctx=eyJ3ZWJVcmwiOiJodHRwczovL3BhY2Nhcm5ldC5zaGFyZXBvaW50LmNvbS9zaX… 1/2 10/17/23, 9:15 AM Vehicle Service Bulletin provide an exact meter reading. https://paccarnet.sharepoint.com/sitepages/vehsvcbltin.aspx?ctx=eyJ3ZWJVcmwiOiJodHRwczovL3BhY2Nhcm5ldC5zaGFyZXBvaW50LmNvbS9zaX… 2/2