Freightliner Cascadia 2017–2021 — technical service bulletin
Bulletin CALFTL32-008 · NHTSA communication 10181323 · issued Oct 15, 2020
Technical service bulletin
communication type
Suspension
component
2017–2021
model years
5
vehicle entries
Official summary
Customer Advisory Letter for Drive Axle Leaf Spring Pin Hex Nut Torque Inspection. Select New Cascadia vehicles may have been delivered to customers with insufficient torque applied to the hex nuts at the front of the spring hanger.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.