Komatsu Forklift trucks, diesel - DX20 series

Coolant capacity & service interval

Komatsu Forklift trucks, diesel - DX20 series utilize coolant with a capacity range of 9,5 to 17 liters. Service intervals include checks every 8 hours and changes every 6 months or 1200 hours. The data covers 6 configurations.

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

TypeSpecifications
FD60-10, Komatsu SAA4D95LE-5-A (55001 ->)
  • Use: Normal
  • Capacity 9,5 liter
  • Check 8 hours
  • Change 6 months/ 1200 hours
FD70-10, Komatsu SAA4D95LE-5-A (55001 ->)
  • Use: Normal
  • Capacity 9,5 liter
  • Check 8 hours
  • Change 6 months/ 1200 hours
FD70-7, Komatsu 6D102E (40001 ->)
  • Use: Normal
  • Capacity 17 liter
  • Check 8 hours
  • Change 6 months/ 1200 hours
FD70T-8, Komatsu S6D102E (46001 ->)
  • Use: Normal
  • Capacity 17 liter
  • Check 8 hours
  • Change 6 months/ 1200 hours
FD80-10, Komatsu SAA4D95LE-5-A (55001 ->)
  • Use: Normal
  • Capacity 9,5 liter
  • Check 8 hours
  • Change 6 months/ 1200 hours
FD80T-8, Komatsu SA6D102E (46001 ->)
  • Use: Normal
  • Capacity 17 liter
  • Check 8 hours
  • Change 6 months/ 1200 hours

Additional Notes

  • The Komatsu FD60-10, FD70-10, and FD80-10 models fitted with the SAA4D95LE-5-A engine share an identical cooling system capacity of 9.5 liters, reflecting the relatively compact four-cylinder displacement of that engine family.
  • Models equipped with the six-cylinder 6D102E, S6D102E, and SA6D102E engines carry a notably larger cooling system capacity of 17 liters, nearly double the 9.5-liter figure associated with the four-cylinder SAA4D95LE-5-A variants.
  • The 17-liter capacity on the FD70-7, FD70T-8, and FD80T-8 is consistent with the greater thermal load generated by larger-displacement six-cylinder engines, which require a higher coolant volume to maintain stable operating temperatures under load.
  • Across all six configurations listed, the coolant level check interval is set at every 8 hours of operation, which corresponds to a standard daily service check in typical single-shift forklift use.
  • The coolant change interval is uniform across all listed configurations at 6 months or 1,200 hours, whichever comes first. The dual-trigger format means time-based degradation is accounted for even in low-utilization applications where the hour threshold may not be reached within the calendar period.
  • The FD70-7 with the Komatsu 6D102E and the FD70T-8 with the S6D102E share the same 17-liter capacity and identical service intervals despite being different model series, indicating that the cooling system architecture is closely related between those two engine variants.
  • All specifications listed apply under normal use conditions, meaning the stated check and change intervals are not adjusted for severe-duty operating environments such as extreme ambient temperatures or heavily contaminated atmospheres.
  • Serial number ranges beginning at 55001 apply to the SAA4D95LE-5-A-equipped FD60-10, FD70-10, and FD80-10, while the 6D102-series engine models carry starting serials of 40001 or 46001, indicating these represent distinct production generations within the DX20 series lineup.

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