Freightliner 114SD 2018–2021 — technical service bulletin

Bulletin 20TS-03REV · NHTSA communication 10176789 · issued Jun 25, 2020

Technical service bulletin

communication type

Engine and Engine Cooling

component

2018–2021

model years

vehicle entries

Official summary

Revised Technical Service Letter for DD Heavy Duty Platform Belt Tensioner Change. A newly designed, dual-arm friction shoe damping tensioner was implemented for the DD Heavy Duty Platform.

Vehicles covered

2018 Freightliner 114SD
2019 Freightliner 114SD
2020 Freightliner 114SD
2021 Freightliner 114SD
2018 Freightliner 122SD
2019 Freightliner 122SD
2020 Freightliner 122SD
2021 Freightliner 122SD
2018 Freightliner Business Class M2
2019 Freightliner Business Class M2
2020 Freightliner Business Class M2
2021 Freightliner Business Class M2
2018 Freightliner Cascadia
2019 Freightliner Cascadia
2020 Freightliner Cascadia
2021 Freightliner Cascadia
2018 Western Star 4700
2019 Western Star 4700
2020 Western Star 4700
2021 Western Star 4700
2018 Western Star 4800
2019 Western Star 4800
2020 Western Star 4800
2021 Western Star 4800
2018 Western Star 4900
2019 Western Star 4900
2020 Western Star 4900
2021 Western Star 4900
2018 Western Star 5700
2019 Western Star 5700
2020 Western Star 5700
2021 Western Star 5700
2018 Western Star 6900
2019 Western Star 6900
2020 Western Star 6900
2021 Western Star 6900

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.