Service bulletin TSN 31-07
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 | 10193162 |
| Published by NHTSA | 2021-05-13 |
| Manufacturer's number | TSN 31-07 |
| Manufacturer's date | 2014-09-26 |
| NHTSA component | SUSPENSION |
NHTSA's summary
The location of the EOF crossmsmber with respect to the centerline of the rear suspension is 1.0 inch (25.4mm) to far forward resulting in interference between the lower drop crossmember and rear suspension air spring. This condition can result in a failure of the rear suspension air spring - TSN.
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
Suspension
| FREIGHTLINER CASCADIA | 2016 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| FAB143 | 2021-05-18. Service bulletin. Freightliner Action Bulletin FAB143 Load Transfer Suspension |
|---|---|
| TSN 32-06 REV A | 2021-05-13. Service bulletin. TSN for all Cascadia vehicles equipped with Airliner 40K and 40K extra duty rear suspensions - Customer complaints of loose fasteners at the rear suspension crossmember where the c-channel attaches to the gussets |
| SB31-043 | 2020-07-31. Service bulletin. Freightliner Service Bulletin for Non-Airliner Rear Suspension Crossmember Fastener Change. With the start of production on March 2, 2020, the fasteners used to assemble the non-Airliner rear suspension (bogie) crossmember have changed. The rear suspension bogie crossmember gussets to the C-channel will be assembled with 5/8 - 18 fasteners. This change includes a revision to a higher friction nut that requires an increase in tightening torque. The new higher friction nut can be identified by its green color. |
| SB32-033 | 2020-03-31. Service bulletin. Freightliner Service Bulletin for Front Axle Spacer Replacement. This service bulletin replaces the version dated 05/01/2016. This bulletin is updated to include the parts list. Some vehicles may exhibit a lean (right or left) due to weight difference on the front suspension. While this does not affect the operation of the vehicle, it may be visually unpleasing to many customers. To correct this condition, replace the existing front axle spacer on the low side of the vehicle with a thicker one. |
| SB00-038 | 2020-03-18. Service bulletin. Freightliner Service Bulletin for vibration troubleshooting - finding the cause. This version replaces the version dated 5/1/14 and adds New Cascadia. |
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| FL807 | 2019-06-10. Service bulletin. Hendrickson 5 Inch Drop Axle Tie Rods |
| New Cascadia Cab | 2019-04-08. Service bulletin. Field Service-New Cascadia Cab Air Shocks |
| New Cascadia Cab | 2019-04-01. Service bulletin. Field Service-New Cascadia Cab Air Shocks |
| DOC-1034171 | 2019-04-01. Service bulletin. SS 1034171 Airliner Rear Suspension Chassis Lean Troubleshooting |