John Deere (Timberjack) Harvesters

AdBlue (DEF) capacity & service interval

John Deere (Timberjack) Harvesters utilize AdBlue (DEF) with a capacity range of 33 to 39 liters. The data covers 5 configurations.

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

TypeSpecifications
803M/MH, John Deere PowerTech Plus 6090 (2019- )
  • Use: Normal
  • Capacity 33 liter
853M/MH, John Deere PowerTech Plus 6090 (2019- )
  • Use: Normal
  • Capacity 33 liter
859M/MH, John Deere PowerTech Plus 6090 (2019- )
  • Use: Normal
  • Capacity 33 liter
953M/MH, John Deere PowerTech Plus 6090 (2019- )
  • Use: Normal
  • Capacity 39 liter
959M/MH, John Deere PowerTech Plus 6090 (2019- )
  • Use: Normal
  • Capacity 39 liter

Additional Notes

  • All five harvester models listed pair the John Deere PowerTech Plus 6090 engine with a selective catalytic reduction (SCR) system, which uses AdBlue (DEF) to reduce nitrogen oxide emissions by injecting the fluid into the exhaust stream before a catalytic converter.
  • The 803M/MH, 853M/MH, and 859M/MH models each carry a 33-liter AdBlue tank capacity, reflecting the fluid reservoir size available under normal operating conditions.
  • The John Deere Timberjack 953M/MH and 959M/MH models carry a larger 39-liter AdBlue tank capacity, a 6-liter increase over the smaller-frame models in the same lineup.
  • The capacity figures listed represent the tank fill volume for the SCR system, not a fluid change interval volume, meaning the value reflects how much AdBlue the reservoir holds when filled.
  • All capacity values apply under normal use conditions, which in fluid specification contexts typically refers to standard operating environments as opposed to severe-duty or extended-cycle conditions.
  • The split between 33-liter and 39-liter tank sizes across the two groups of models suggests a difference in machine size or engine load demands, with the 9-series harvesters requiring the larger reservoir.

Other Systems