Service bulletin TechTalk7742
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 | 10181990 |
| Published by NHTSA | 2020-11-03 |
| Manufacturer's number | TechTalk7742 |
| Manufacturer's date | 2020-10-05 |
| NHTSA component | EQUIPMENT; STEERING; SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY:SHACKLE |
NHTSA's summary
Tech Talk discussion on loose rear spring shackle bushings in the springs causing steer axle to shift on pins,
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
Equipment and accessories, Steering, Suspension
| WESTERN STAR 4900 | 2020 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 20V634000 | 2020-10-14. EQUIPMENT:OTHER:LABELS; TIRES |
|---|---|
| 20V539000 | 2020-09-03. SUSPENSION:MULTIPLE AXLE |
| 20V211000 | 2020-04-10. EQUIPMENT:OTHER:LABELS |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
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| SS734-WST | 2024-06-05. Other. Service Solution for Thread Spring Pin Suspension Alignment & Installation |
| CALWS49-001 | 2021-05-25. Service bulletin. Customer Advisory Letter on ATD Inlet Pipe Bellows Assembly |
| WSTCAE180-2020 | 2021-05-18. Service bulletin. Portland Truck Plant Paint Changes |
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| WSTCAE171-2019 | 2021-05-18. Service bulletin. Allison FuelSense 2.0 |
| WI21-008 | 2021-04-23. Service bulletin. Warranty Information Letter announcing DTNA is adjusting the Standard Repair Times (SRTs) shown. The updated times will be applied to repair orders opened on or after April 5, 2021. |
| DT12 Trans Chafe | 2021-04-08. Service bulletin. DTNA received a field notification on multiple units regarding diagnostic fault codes that were found to be causing issues to the After Treatment Control Module (ACM). These fault codes indicated that the ACM communication message was not received by the Motor Control Module (MCM) which in certain cases, led to a 25% engine de-rate situation. Further diagnosis revealed that the DT12 wiring harness was chafing and contacting the transmission TCU case. To reduce potential chafing areas, the proposed short-term containment was to route the wiring harness using additional tie straps. This communication applies to Freightliner and Western Star vehicles built with DT12 transmissions. |
| WP60-100 | 2021-03-25. Service bulletin. Updated Western Star Parts Technical Bulletin for Universal Design Floor Mats. This bulletin replaces the version dated February 12, 2021. Information about parts notes in the Paragon system have been added and the trimming instructions are revised. Universal floor mat designs fit multiple cab configurations and may require trimming. Trim lines displaying size options are scored into the pad side of the mat; use an existing floor mat as a guide for optimal results. The new mat should not interfere with safety-critical equipment, such as foot pedals. |