Valpadana 4600 series

Coolant capacity & service interval

Valpadana 4600 series uses coolant with a capacity range of 3 to 6 liters. Service intervals require changes every 1000 hours or 12 months. The data covers 8 configurations.

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

TypeSpecifications
4630 ARM, Yanmar 3TNV76-XVA (2015-2020)
  • Use: Normal
  • Capacity 3 liter
  • Change 1000 hours/ 12 months
4630 ISM, Yanmar 3TNV76-XVA (2015-2020)
  • Use: Normal
  • Capacity 3 liter
  • Change 1000 hours/ 12 months
4645 ARM, Yanmar 3TNV88-BKVA (2015-2020)
  • Use: Normal
  • Capacity 5 liter
  • Change 1000 hours/ 12 months
4645 ISM, Yanmar 3TNV88-BKVA (2015-2020)
  • Use: Normal
  • Capacity 5 liter
  • Change 1000 hours/ 12 months
4645 VRM, Yanmar 3TNV88-BKVA (2015-2020)
  • Use: Normal
  • Capacity 5 liter
  • Change 1000 hours/ 12 months
4655 ARM, Yanmar 4TNV88-BKVA (2015-2020)
  • Use: Normal
  • Capacity 6 liter
  • Change 1000 hours/ 12 months
4655 ISM, Yanmar 4TNV88-BKVA (2015-2020)
  • Use: Normal
  • Capacity 6 liter
  • Change 1000 hours/ 12 months
4655 VRM, Yanmar 4TNV88-BKVA (2015-2020)
  • Use: Normal
  • Capacity 6 liter
  • Change 1000 hours/ 12 months

Additional Notes

  • Across the Valpadana 4600 series (2015-2020), cooling system capacity varies by engine displacement rather than by transmission or cab configuration. The 4630 variants fitted with the Yanmar 3TNV76-XVA hold 3 liters, the 4645 variants with the 3TNV88-BKVA hold 5 liters, and the 4655 variants with the 4TNV88-BKVA hold 6 liters.
  • The 3-liter cooling system capacity on the 4630 ARM and 4630 ISM reflects the smaller displacement of the three-cylinder 3TNV76-XVA engine. Smaller displacement engines generally require less coolant volume to maintain operating temperature.
  • The step from 5 liters on the 4645 to 6 liters on the 4655 corresponds to the addition of a fourth cylinder. Both engines share the same 88mm bore designation in the TNV88 family, so the capacity increase is attributable to the greater total engine volume rather than a change in bore size.
  • Within the 4645 range, the ARM, ISM, and VRM configurations all share an identical 5-liter cooling system capacity. The suffix differences, which typically denote transmission or operator platform variants, have no effect on the cooling system fill volume for the 3TNV88-BKVA engine.
  • The same pattern holds for the 4655 range, where the ARM, ISM, and VRM variants all specify 6 liters. Configuration type does not alter the cooling system capacity when the underlying engine remains constant.
  • All eight configurations across the 4600 series share a uniform coolant change interval of 1,000 hours or 12 months under normal use conditions, whichever comes first. The dual-trigger format is standard practice for equipment that may accumulate hours at varying rates across different seasons or workloads.
  • The 1,000-hour or 12-month interval applies specifically to normal use conditions. In agricultural machinery, normal use typically refers to operation within standard load, temperature, and environmental parameters as opposed to sustained heavy-duty or dusty field conditions.