Komatsu Forklift trucks, diesel - DX20 series

Automatic transmission fluid capacity & service interval

Komatsu Forklift trucks, diesel - DX20 series require automatic transmission fluid with a capacity range of 20 to 24 liters. Service intervals include checking every 1 month or 200 hours, and changing every 1 to 6 months or 200 to 1200 hours. The data covers 12 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 ->)
  • Powershift
  • Use: Normal
  • Capacity 24 liter
  • Check 1 months/ 200 hours
  • Change 6 months/ 1200 hours
  • Code: Torqflow
  • FD60-10, Komatsu SAA4D95LE-5-A (55001 ->)
  • Powershift
  • Use: Initial service
  • Capacity 24 liter
  • Change 1 months/ 200 hours
  • Code: Torqflow
  • FD70-10, Komatsu SAA4D95LE-5-A (55001 ->)
  • Powershift
  • Use: Normal
  • Capacity 24 liter
  • Check 1 months/ 200 hours
  • Change 6 months/ 1200 hours
  • Code: Torqflow
  • FD70-10, Komatsu SAA4D95LE-5-A (55001 ->)
  • Powershift
  • Use: Initial service
  • Capacity 24 liter
  • Change 1 months/ 200 hours
  • Code: Torqflow
  • FD70-7, Komatsu 6D102E (40001 ->)
  • Powershift
  • Use: Normal
  • Capacity 20 liter
  • Check 1 months/ 200 hours
  • Change 6 months/ 1200 hours
  • Code: Torqflow
  • FD70-7, Komatsu 6D102E (40001 ->)
  • Powershift
  • Use: Initial service
  • Capacity 20 liter
  • Change 1 months/ 200 hours
  • Code: Torqflow
  • FD70T-8, Komatsu S6D102E (46001 ->)
  • Powershift
  • Use: Normal
  • Capacity 20 liter
  • Check 1 months/ 200 hours
  • Change 6 months/ 1200 hours
  • Code: Torqflow
  • FD70T-8, Komatsu S6D102E (46001 ->)
  • Powershift
  • Use: Initial service
  • Capacity 20 liter
  • Change 1 months/ 200 hours
  • Code: Torqflow
  • FD80-10, Komatsu SAA4D95LE-5-A (55001 ->)
  • Powershift
  • Use: Normal
  • Capacity 24 liter
  • Check 1 months/ 200 hours
  • Change 6 months/ 1200 hours
  • Code: Torqflow
  • FD80-10, Komatsu SAA4D95LE-5-A (55001 ->)
  • Powershift
  • Use: Initial service
  • Capacity 24 liter
  • Change 1 months/ 200 hours
  • Code: Torqflow
  • FD80T-8, Komatsu SA6D102E (46001 ->)
  • Powershift
  • Use: Normal
  • Capacity 20 liter
  • Check 1 months/ 200 hours
  • Change 6 months/ 1200 hours
  • Code: Torqflow
  • FD80T-8, Komatsu SA6D102E (46001 ->)
  • Powershift
  • Use: Initial service
  • Capacity 20 liter
  • Change 1 months/ 200 hours
  • Code: Torqflow

Additional Notes

  • All powershift transmission fluid capacities across the DX20 series fall into one of two values: 24 liters for models paired with the Komatsu SAA4D95LE-5-A engine, and 20 liters for models paired with the 6D102E engine family. The 24-liter figure applies to the FD60-10, FD70-10, and FD80-10, while the 20-liter figure applies to the FD70-7, FD70T-8, and FD80T-8.
  • A powershift transmission is a type of automatic transmission that uses hydraulic clutch packs to shift gears under load without interrupting power delivery. The relatively large fluid capacities listed here reflect the hydraulic volume required to operate and cool those clutch packs during continuous heavy-duty forklift operation.
  • Each model carries two distinct service entries for the powershift transmission: one for normal use and one for initial service. The initial service entry specifies a fluid change at 1 month or 200 hours, which represents an early break-in interval intended to remove metal particles and contaminants generated during the first operating period of a new or rebuilt transmission.
  • Under normal use conditions, the fluid change interval is set at 6 months or 1,200 hours across all listed models, whichever comes first. A separate fluid level check is also specified at 1 month or 200 hours under normal use, meaning the check interval mirrors the timing of the initial service change.
  • The initial service entries for all models list only a change interval of 1 month or 200 hours, with no separate check interval specified for that condition. Under normal use, both a check and a change interval are listed, reflecting the more structured ongoing maintenance schedule that follows the break-in period.
  • The FD70-7 with the Komatsu 6D102E engine carries serial numbers from 40001 onward, while the FD70T-8 with the S6D102E and the FD80T-8 with the SA6D102E both begin at serial number 46001. The SAA4D95LE-5-A-equipped models — FD60-10, FD70-10, and FD80-10 — share a later starting serial number of 55001, indicating a more recent production origin relative to the 6D102E-based variants.
  • The S6D102E in the FD70T-8 and the SA6D102E in the FD80T-8 are variants of the same 6D102E engine family, with the prefix letters denoting turbocharged and turbocharged-aftercooled configurations respectively. Despite these engine differences, both models share the same 20-liter transmission fluid capacity and identical service intervals.

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