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July 27, 2020 Service bulletin

Technical Service Letter for EPA10, GHG14, GHG17 Diesel Particulate Filter (DPF) Compatibility

Freightliner technical service bulletin 20TS-05 for 2010-2021 Freightliner Cascadia, 2010-2021 Freightliner Business Class M2 and 2010-2021 Thomas Built Buses Saf-T-Liner C2 and others.

Bulletin number
20TS-05
Component
Engine and engine cooling
Summary
Technical Service Letter for EPA10, GHG14, GHG17 Diesel Particulate Filter (DPF) Compatibility. Note: This document supersedes 14 TS-25 and 15 TS-8. Detroit Diesel has determined that some, Diesel Particulate Filters (DPFs) are compatible in pairs and or can be mixed together within EPA10 and GHG14 Systems. For 1-BOX and Two-Box Configuration Aftertreatment Systems (ATS), this is only possible when the filters are used in accordance with Tables 1 and 2 shown below. All other DPFs, NOT mentioned below, are NOT compatible.

Owners of these vehicles have filed 27 complaints in the engine category.

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