SBW49-020
Service Bulletin Details
Public Details for: SBW49-020
Western star service bulletin for def connector reinforcement caps
- 2022 - 2021 - 2020 - 2019 - 2018 - 2017 - 2016 - 2015 - 2014 -
Models from 2022
| 2022 WESTERN STAR 4700 |
| 2022 WESTERN STAR 4900 |
| 2022 WESTERN STAR 5700 |
| 2022 WESTERN STAR 6900 |
Models from 2021
| 2021 WESTERN STAR 4700 |
| 2021 WESTERN STAR 4900 |
| 2021 WESTERN STAR 5700 |
| 2021 WESTERN STAR 6900 |
Models from 2020
| 2020 WESTERN STAR 4700 |
| 2020 WESTERN STAR 4900 |
| 2020 WESTERN STAR 5700 |
| 2020 WESTERN STAR 6900 |
Models from 2019
| 2019 WESTERN STAR 4700 |
| 2019 WESTERN STAR 4900 |
| 2019 WESTERN STAR 5700 |
| 2019 WESTERN STAR 6900 |
Models from 2018
| 2018 WESTERN STAR 4700 |
| 2018 WESTERN STAR 4900 |
| 2018 WESTERN STAR 5700 |
| 2018 WESTERN STAR 6900 |
Models from 2017
| 2017 WESTERN STAR 4700 |
| 2017 WESTERN STAR 4900 |
| 2017 WESTERN STAR 5700 |
| 2017 WESTERN STAR 6900 |
Models from 2016
| 2016 WESTERN STAR 4700 |
| 2016 WESTERN STAR 4900 |
| 2016 WESTERN STAR 5700 |
| 2016 WESTERN STAR 6900 |
Models from 2015
| 2015 WESTERN STAR 4700 |
| 2015 WESTERN STAR 4900 |
| 2015 WESTERN STAR 5700 |
| 2015 WESTERN STAR 6900 |
Models from 2014
| 2014 WESTERN STAR 4700 |
| 2014 WESTERN STAR 4900 |
| 2014 WESTERN STAR 5700 |
| 2014 WESTERN STAR 6900 |
49-020 DEF Connector Reinforcement Caps > 4700 4800 > 4900 Western Star Service Bulletin > 5700 > 6900 49X General Information Some customers experience separation of the diesel exhaust fluid (DEF) lines from the connection ports in extreme cold temperatures. To prevent this, a process was developed to secure the lines with wire ties. A new reinforcement cap has been developed to simplify this process at the DEF connection fittings. Vehicles built from January 2013 to January 2022 can be fitted with reinforcement caps on most DEF line connections. See Table 1. DEF lines for vehicles equipped with Detroit engines, built from November 2018 to February 2020, have a different line design. For this date range, the original lines connecting the DEF tank to the pump, and doser to the tank, are not compatible with the reinforcement caps. If a customer complains of DEF line separation resulting from freezing fluid, or if the vehicle is operated in areas with extreme cold conditions, the customer should consider making this update to prevent such issues in the future. Installing the DEF Connector Reinforcement Cap NOTE: For specific instructions on accessing the components listed below, see the applicable vehicle workshop manual. NOTICE If the vehicle has sustained a line separation resulting from frozen DEF, and the line is damaged, it must be replaced. Separate the line from the fitting (port), remove the white retaining clip, and inspect the line connector for damage. See Fig. 1. 11/10/2021 f470774 Fig. 1, Line Damage Resulting from Freezing DEF 1. 1. Remove the lines from the aftertreatment system (ATS) doser. 1.1 Unlock the line connectors by pushing them onto the ports as far as possible. Then squeeze the ends of the white locking clip together. 1.2 Remove each line. 2. Install the caps on the connectors on the opposite side from the locking clip. See Fig. 2. Western Star Service Bulletin, 02/15/2022 Page 1 49-020 DEF Connector Reinforcement Caps Western Star Service Bulletin > 4700 4800 > 4900 > 5700 > 6900 49X 1 2 11/15/2021 f470775 1. DEF Line With Reinforcement Cap Installed 2. DEF Line Before Installation of Reinforcement Cap Fig. 2, Reinforcement Cap Installation 3. Install the lines. 4. For vehicles equipped with a Detroit engine, remove the line from the left-hand (suction) port of the DEF pump. 5. Install the reinforcement cap on the connector. See Fig. 3. 11/10/2021 f470776 Fig. 3, Reinforcement Cap Installation Page 2 Western Star Service Bulletin, 02/15/2022 49-020 DEF Connector Reinforcement Caps > 4700 4800 > 4900 Western Star Service Bulletin > 5700 > 6900 49X 6. Install the suction port line. 7. Remove the line from the right-hand (supply) port of the DEF pump, install the reinforcement cap, and install the line. 8. Remove the line from the left-hand (supply) port of the DEF tank, install the reinforcement cap, and install the line. 9. Install any vehicle components removed to access the DEF lines. 09/27/2021 f547637 Fig. 4, Installing DEF Tank Reinforcement Cap Western Star Service Bulletin, 02/15/2022 Page 3 49-020 DEF Connector Reinforcement Caps Western Star Service Bulletin > 4700 4800 > 4900 09/28/2021 > 5700 > 6900 49X f547639 Fig. 5, DEF Tank Reinforcement Cap Installed (reverse angle) Parts 02/11/2022 f470777 Fig. 6, DEF Connector Reinforcement Cap Kit Parts Location Line Detroit Fitting Size / Line Type / Clip Orientation Reinforcement Cap Number Page 4 Tank Suction 5/16_PA_LH DEF Reinforcement Cap Kit Numbers per Engine Type Pump Pump Doser Doser Suction Pressure Pressure Return 1/4_PA_LH 5/16_EPDM_RH 1/4_EPDM_RH 5/16_EPDM_LH 04-35740-211 04-35740-111 04-35740-222 04-35740-122 04-35740-211 Tank Return 3/8_PA_RH N/A Western Star Service Bulletin, 02/15/2022 49-020 DEF Connector Reinforcement Caps > 4700 4800 > 4900 Western Star Service Bulletin > 5700 > 6900 49X Cummins 5/16_EPDM_LH Fitting Size / Line Type / Clip Orientation Reinforcement 04-35740-211 Cap Number 3/8_EPDM_LH 5/16_EPDM_RH 1/4_EPDM_RH 5/16_EPDM_LH 3/8_EPDM_RH N/A 04-35740-222 04-35740-122 04-35740-211 N/A Table 1, DEF Reinforcement CAP Kit Parts per Engine Type DTNA Part Number 04-35740-122 04-35740-111 04-35740-211 04-35740-222 04-35740-221 Reinforcement Cap Part Numbers Clip Type Qty. Detroit 1/4_EPDM_RH 1 1/4_PA_LH 1 5/16_PA_LH 2 5/16_EPDM_RH 1 5/16_EPDM_LH N/A Qty. Cummins 1 N/A N/A 1 2 Table 2, Reinforcement Cap Part Numbers Warranty This is an informational bulletin only. Warranty does not apply. Western Star Service Bulletin, 02/15/2022 Page 5