2023 Kenworth T800B TSBs
18 Technical Service Bulletins across 7 categories
Software & Calibration
6 bulletinsThe verbiage in the Introduction section has been updated.
(KW) Certain T680 / T800 / T880 / W900 / W990 have updated GHG labels available for order and installation.
The attached procedures document has been updated with more detail and explanations.
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This is not a stand-alone procedure. Cummins Quickserve troubleshooting will specify the use of these procedures while troubleshooting specific fault codes.
Bogie Crossmember Torque Value Update - Procedure has been updated to correct torque values.
FIX-AS-FAIL Updated procedures and claim filing information.
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EPA2021 injector cleaning is referenced in RMI for certain injector faults. Complete the procedures in E290. Refer to E300 for in-tank additive information
FIX-AS-FAIL Updated procedures and claim filing information.
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EPA2021 injector cleaning is referenced in RMI for certain injector faults. Complete the procedures in E290. Refer to E300 for in-tank additive information
Engine
5 bulletinsProcedure pictures updated for clarity.
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When troubleshooting Cummins X15 fault codes 555 or 556, follow this additional testing, inspection, and documentation procedure to help identify the root cause of dusted engines. This is not a stand-alone process but must be used alongside Cummins troubleshooting steps. Cummins Quickserve will reference this bulletin for fault codes 555 or 556.
PACCAR will reimburse customers for the local purchase of in-tank fuel additive for EPA2021 compliant MX engines.
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This is a one-time reimbursement. Only customers who have received E290 injector cleaning qualify for this reimbursement. See bulletin for limits and purchase tracking requirements.
Info Only - PACCAR is introducing Over-the-Air (OTA) software updates for engine MY17 and newer chassis equipped with...
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Cummins X15, X12, ISX12, ISX12N, L9N, PX-7, and PX-9 engines The technology will leverage the existing Remote Diagnostic cs hardware to deliver secure software updates remotely. This will reduce downtime and save on maintenance costs for eligible vehicles.
Kenworth is providing guidance for PACCAR MX Engine Composite Oil Pan leak troubleshooting to avoid over-repairs and to...
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provide warrantable repair guidance. Oil leaks, if not repaired, can lead to severe engine damage.
Certain T680 NextGen chassis equipped with an RCX230 Horton fan clutch and a Cummins X15 engine are experiencing an adapter harness failure.
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This failure causes the fan to remain activated while the truck is in operation and may trigger a check engine light and diagnostic trouble codes.
Air Bags & Safety
2 bulletinsSafety Recall Repair parts and procedures are now available.
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On certain Kenworth model years 2018 through 2024 C500/T660/T800/W900 trucks with Sears Atlas 70 or 80 series seats, a spacer was installed on the seatbelt mounting assembly. In a severe collision, the ICP bar may fail, increasing the risk of injury.
Safety Recall Interim Notification On certain Kenworth model year 2018 through 2024 C500/T660/T800/W900 trucks with...
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Sears Atlas 70 or 80 series seats, an additional spacer was installed on the seatbelt mounting assembly. In a severe collision, the ICP bar may fail allowing the seatbelt to slip, increasing the risk of injury. This bulletin will be updated when repair parts and procedures become available.
Body & Paint
2 bulletinsChassis were shipped without door stop plates installed due to a supplier shortage.
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Parts kits are now available and shipped to dealers. Installation procedures and warranty information have been included. Cotter pins are not included in the parts kit and will need to be locally sourced.
NFO ONLY Certain Model Year 2023 T800, W900, and C500 chassis were shipped without door stop plates installed due to a supplier shortage.
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This bulletin will be updated once parts are available.
Other
1 bulletin"Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes.
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2 chassis added to the chassis list. Peterbilt: Dealers should check the chassis list and SIR weekly for VIN changes. 10 chassis added to the chassis list."
Brakes
1 bulletinCertain C500/T440/T470/T660/T680/T800/T880/W900 chassis may have air tank reservoirs that do not meet air volume...
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requirements per FMVSS/CMVSS 121 Air Brake Systems. This bulletin will be updated when repair parts and procedures are available.
Electrical
1 bulletinDue to a global chip shortage, certain chassis will be shipped without the Bendix side object detection radar modules and A-pillar displays.
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Refer to Sales Bulletin TE2680 for details.