Service bulletin 02-184
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10241498 |
| Published by NHTSA | 2023-09-01 |
| Manufacturer's number | 02-184 |
| Manufacturer's date | 2023-08-30 |
| NHTSA component | STRUCTURE |
NHTSA's summary
Certain W990 chassis may have hood hardware that could loosen. Additionally, some chassis may have hood rests that are too rigid causing excessive noise. Hood attaching hardware and hood rests will be replaced as necessary.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Body and frame
| KENWORTH W990 | 2018, 2019, 2020, 2021, 2022, 2023, 2024 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 14-033 | 2023-11-10. Service bulletin. 14-033: T680/T880/W990 Crossmember Fastener Torque Certain chassis may have under-torqued crossmember fasteners. Frame crossmember gusset fasteners must be re-torqued to prevent damage from frame vibration and movement. |
|---|---|
| 02-174 | 2023-09-01. Service bulletin. Certain W990 hood-mounted engine air intake covers could loosen and rattle or separate from vehicle. New air intake covers are available with improved retention. Installation of new covers requires hood modification. Procedures are available for replacement of hood-mounted engine air intake covers. |
| 02-168 | 2021-10-05. Service bulletin. Information Only - Rear axle Quarter Fenders with less than two inches of clearance between the top of the quarter fender and the bottom of the trailer/equipment are susceptible to damage. The lack of clearance could result in cracked/broken quarter fenders or complete separation if undetected or un-remedied. |
| 14-027 | 2020-10-06. Service bulletin. Information only: In 2020, Peterbilt and Kenworth began using the same M10, M12, M16, and M20 frame fasteners on all vehicles. Torque specifications for these fasteners are different from previous fasteners. |
| 43-066 | 2020-04-07. Service bulletin. DEF tank covers may become loose and potentially crack on vehicles built before October 2019 with DEF tank part number M86-6221-003**(TANK-DEF MEDIUM ASSY) and M86-6222-003**(TANK-DEF LARGE, ASSY). Resolution is to resolve the vibration on the tank cover by adding bottom tank washers. |