Field Service Campaign for Detroit Diesel Engine Fan Activation with A/C. On certain Freightliner and...
Freightliner technical service bulletin SF631 for 2022 Freightliner Business Class M2, 2022 Western Star 4900 and 2022 Western Star 4700 and others.
- Bulletin number
- SF631
- Component
- Engine and engine cooling
- Summary
- Field Service Campaign for Detroit Diesel Engine Fan Activation with A/C. On certain Freightliner and Western Star vehicles with Detroit Diesel engines, the engine fan fails to activate when the A/C pressure switch circuit is opened, resulting in poor A/C cooling performance at idle.
Vehicles covered
- Freightliner Business Class M2 2022 2022
- Western Star 4900 2022 2022
- Western Star 4700 2022 2022
- Freightliner 114SD 2022 2022
- Western Star 5700 2022 2022
- Freightliner 122SD 2022 2022
- Freightliner 108SD 2022 2022
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