Komatsu Forklift trucks, diesel - Tusk DX20 series

Automatic transmission fluid capacity & service interval

Komatsu Forklift trucks, diesel - Tusk DX20 series automatic transmission fluid capacity ranges from 20 to 24 liters. Service intervals include checks at 1 month or 200 hours, and changes at 1 month or 200 hours and 6 months or 1200 hours. The data covers 10 configurations.

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

TypeSpecifications
  • 1320PD-10, Komatsu SAA4D95LE-5-A (55001 ->)
  • Powershift
  • Use: Normal
  • Capacity 24 liter
  • Check 1 months/ 200 hours
  • Change 6 months/ 1200 hours
  • Code: Torqflow
  • 1320PD-10, Komatsu SAA4D95LE-5-A (55001 ->)
  • Powershift
  • Use: Initial service
  • Capacity 24 liter
  • Change 1 months/ 200 hours
  • Code: Torqflow
  • 1540PD-10, Komatsu SAA4D95LE-5-A (55001 ->)
  • Powershift
  • Use: Normal
  • Capacity 24 liter
  • Check 1 months/ 200 hours
  • Change 6 months/ 1200 hours
  • Code: Torqflow
  • 1540PD-10, Komatsu SAA4D95LE-5-A (55001 ->)
  • Powershift
  • Use: Initial service
  • Capacity 24 liter
  • Change 1 months/ 200 hours
  • Code: Torqflow
  • 1540PD-8, Komatsu S6D102E (46001 ->)
  • Powershift
  • Use: Normal
  • Capacity 20 liter
  • Check 1 months/ 200 hours
  • Change 6 months/ 1200 hours
  • Code: Torqflow
  • 1540PD-8, Komatsu S6D102E (46001 ->)
  • Powershift
  • Use: Initial service
  • Capacity 20 liter
  • Change 1 months/ 200 hours
  • Code: Torqflow
  • 1800PD-10, Komatsu SAA4D95LE-5-A (55001 ->)
  • Powershift
  • Use: Normal
  • Capacity 24 liter
  • Check 1 months/ 200 hours
  • Change 6 months/ 1200 hours
  • Code: Torqflow
  • 1800PD-10, Komatsu SAA4D95LE-5-A (55001 ->)
  • Powershift
  • Use: Initial service
  • Capacity 24 liter
  • Change 1 months/ 200 hours
  • Code: Torqflow
  • 1800PD-8, Komatsu SA6D102E (46001 ->)
  • Powershift
  • Use: Normal
  • Capacity 20 liter
  • Check 1 months/ 200 hours
  • Change 6 months/ 1200 hours
  • Code: Torqflow
  • 1800PD-8, Komatsu SA6D102E (46001 ->)
  • Powershift
  • Use: Initial service
  • Capacity 20 liter
  • Change 1 months/ 200 hours
  • Code: Torqflow

Additional Notes

  • All configurations in the Komatsu Tusk DX20 series covered here use powershift automatic transmissions, a design that requires a dedicated automatic transmission fluid rather than a conventional gear oil, due to the hydraulic clutch packs and torque converter involved in powershift operation.
  • The 1320PD-10, 1540PD-10, and 1800PD-10 models paired with the Komatsu SAA4D95LE-5-A engine all share a 24-liter powershift transmission fluid capacity, while the 1540PD-8 and 1800PD-8 models fitted with the S6D102E and SA6D102E engines respectively carry a 20-liter capacity.
  • The 4-liter difference between the -10 and -8 series transmission capacities reflects a distinction between the two powertrain generations rather than a difference in truck load rating, since both the 1540 and 1800 model designations appear across both capacity figures.
  • Under normal use conditions, the fluid check interval is set at 1 month or 200 hours, whichever comes first, while the full fluid change is scheduled at 6 months or 1,200 hours. The dual time-and-hour structure accounts for machines that accumulate hours quickly as well as those used intermittently.
  • An initial service interval is specified separately for all configurations, requiring a fluid change at 1 month or 200 hours. This early change is standard practice for powershift transmissions to remove metallic particles and assembly residues that accumulate during the break-in period before normal service intervals take over.
  • The initial service change interval of 1 month or 200 hours is identical in timing to the ongoing check interval under normal use, meaning the first scheduled fluid check and the initial fluid change fall at the same point in the service calendar.
  • Serial number ranges beginning at 55001 apply to the SAA4D95LE-5-A engine variants, while those beginning at 46001 apply to the S6D102E and SA6D102E variants, indicating that the two engine families entered production or specification tracking at different serial number thresholds.

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