Terex Reach stackers, CS/TFC

AdBlue (DEF) capacity & service interval

Terex Reach stackers, CS/TFC utilize AdBlue (DEF) with a capacity range of 17 to 25 liters. The data covers 4 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
CS 7.5 S6, Cummins QSB6.7 Tier 4f (Stage IV)
  • Use: Normal
  • Capacity 19-25 liter
CS 7.5 S6, Volvo TAD750VE Tier 3 (Stage IIIA)
  • Use: Normal
  • Capacity 17 liter (Engine only)
CS 7.5 S6, Volvo TAD762VE Tier 4i (Stage IIIB)
  • Use: Normal
  • Capacity 17 liter (Engine only)
CS 7.5 S6, Volvo TAD871VE Tier 4f (Stage IV)
  • Use: Normal
  • Capacity 17 liter (Engine only)

Additional Notes

  • The Terex CS 7.5 S6 with the Cummins QSB6.7 Tier 4f (Stage IV) engine carries a notably wider AdBlue capacity range of 19-25 liters, compared to the fixed 17-liter figure shared by all three Volvo engine variants in the same model. A variable capacity range typically reflects differences between tank configurations or installation options across machine builds.
  • All three Volvo engine variants in the CS 7.5 S6 — the TAD750VE Tier 3 (Stage IIIA), TAD762VE Tier 4i (Stage IIIB), and TAD871VE Tier 4f (Stage IV) — share an identical AdBlue capacity of 17 liters. The "(Engine only)" qualifier on each of these entries indicates the figure applies specifically to the engine-side SCR tank, excluding any additional machine-level storage that may exist separately.
  • The "(Engine only)" notation is absent from the Cummins QSB6.7 Tier 4f entry, which lists a 19-25 liter range without that qualifier. This distinction separates the Cummins configuration from the Volvo-engined variants in terms of how the capacity measurement is scoped.
  • AdBlue, also known as Diesel Exhaust Fluid (DEF), is consumed by selective catalyst reduction (SCR) systems to reduce nitrogen oxide (NOx) emissions. All four CS 7.5 S6 configurations listed carry an SCR system, consistent with the Tier 3 through Tier 4f (Stage IIIA through Stage IV) emissions standards represented across the engine range.
  • Tier 3 (Stage IIIA) engines were not originally required to use SCR technology, yet the Volvo TAD750VE in the CS 7.5 S6 is noted as using an SCR system. This reflects a manufacturer-level design choice rather than a regulatory mandate at that emissions tier.

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