Zoomlion Rough terrain cranes, RT

Coolant capacity & service interval

Zoomlion Rough terrain cranes, RT use coolant with a capacity range of 30 to 60 liters. Service intervals include checks every 8 hours and changes every 6 months. The data covers 5 configurations.

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

TypeSpecifications
RT100, Cummins QSC8.3 Tier 3 / EU Stage IIIA
  • Use: Normal
  • Capacity 60 liter
  • Check 8 hours
  • Change 6 months
RT35, Cummins QSB6.7 Tier 3 / EU Stage IIIA
  • Use: Normal
  • Capacity 30 liter
  • Check 8 hours
  • Change 6 months
RT55, Cummins QSB6.7 Tier 3 / EU Stage IIIA
  • Use: Normal
  • Capacity 50 liter
  • Check 8 hours
  • Change 6 months
RT60, Cummins QSB6.7 Tier 3 / EU Stage IIIA
  • Use: Normal
  • Capacity 50 liter
  • Check 8 hours
  • Change 6 months
RT75, Cummins QSB6.7 Tier 3 / EU Stage IIIA
  • Use: Normal
  • Capacity 50 liter
  • Check 8 hours
  • Change 6 months

Additional Notes

  • The Zoomlion RT100, equipped with the Cummins QSC8.3 Tier 3 / EU Stage IIIA engine, carries the largest cooling system capacity in the RT lineup at 60 liters. A capacity at this level reflects the greater thermal load generated by the larger displacement QSC8.3 engine compared to the QSB6.7 units found in smaller RT models.
  • The RT35 holds the smallest cooling system capacity across the listed RT models at 30 liters, paired with the Cummins QSB6.7 Tier 3 / EU Stage IIIA engine. The lower volume is consistent with the reduced engine output and physical scale of the RT35 relative to heavier-capacity crane models in the range.
  • The RT55, RT60, and RT75 all share an identical cooling system capacity of 50 liters, each running the same Cummins QSB6.7 Tier 3 / EU Stage IIIA engine. The uniform capacity across three distinct crane models suggests the QSB6.7 engine's cooling requirements remain consistent regardless of the crane's rated lifting capacity.
  • All five RT models specify a coolant level check interval of every 8 hours under normal use conditions. An 8-hour interval corresponds to a standard single operator shift, meaning coolant level verification is expected as part of daily pre-shift or post-shift maintenance practice.
  • The coolant change interval is set at 6 months for all listed RT models under normal use conditions. A time-based interval rather than an hours-based one reflects the degradation characteristics of coolant additives, which break down over time regardless of machine operating hours.

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