Komatsu Forklift trucks, diesel - Tusk BX20 series, -14/-16

Automatic transmission fluid capacity & service interval

Komatsu Forklift trucks, diesel - Tusk BX20 series, -14/-16 utilize automatic transmission fluid with a capacity of 11,8 liters. Service intervals include checks at 200 hours and changes at 1 months/200 hours or 6 months/1200 hours. The data covers 12 configurations.

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

TypeSpecifications
  • 400PD-14, Komatsu 4D94E
  • Powershift
  • Use: Normal
  • Capacity 11,8 liter
  • Check 200 hours
  • Change 6 months/ 1200 hours
  • Code: Torqflow
  • 400PD-14, Komatsu 4D94E
  • Powershift
  • Use: Initial service
  • Capacity 11,8 liter
  • Change 1 months/ 200 hours
  • Code: Torqflow
  • 400PDS-14, Komatsu 4D94E
  • Powershift
  • Use: Normal
  • Capacity 11,8 liter
  • Check 200 hours
  • Change 6 months/ 1200 hours
  • Code: Torqflow
  • 400PDS-14, Komatsu 4D94E
  • Powershift
  • Use: Initial service
  • Capacity 11,8 liter
  • Change 1 months/ 200 hours
  • Code: Torqflow
  • 500PD-14, Komatsu 4D94E
  • Powershift
  • Use: Normal
  • Capacity 11,8 liter
  • Check 200 hours
  • Change 6 months/ 1200 hours
  • Code: Torqflow
  • 500PD-14, Komatsu 4D94E
  • Powershift
  • Use: Initial service
  • Capacity 11,8 liter
  • Change 1 months/ 200 hours
  • Code: Torqflow
  • 500PDS-14, Komatsu 4D94E
  • Powershift
  • Use: Normal
  • Capacity 11,8 liter
  • Check 200 hours
  • Change 6 months/ 1200 hours
  • Code: Torqflow
  • 500PDS-14, Komatsu 4D94E
  • Powershift
  • Use: Initial service
  • Capacity 11,8 liter
  • Change 1 months/ 200 hours
  • Code: Torqflow
  • 600PD-14, Komatsu 4D94E
  • Powershift
  • Use: Normal
  • Capacity 11,8 liter
  • Check 200 hours
  • Change 6 months/ 1200 hours
  • Code: Torqflow
  • 600PD-14, Komatsu 4D94E
  • Powershift
  • Use: Initial service
  • Capacity 11,8 liter
  • Change 1 months/ 200 hours
  • Code: Torqflow
  • 600PDS-14, Komatsu 4D94E
  • Powershift
  • Use: Normal
  • Capacity 11,8 liter
  • Check 200 hours
  • Change 6 months/ 1200 hours
  • Code: Torqflow
  • 600PDS-14, Komatsu 4D94E
  • Powershift
  • Use: Initial service
  • Capacity 11,8 liter
  • Change 1 months/ 200 hours
  • Code: Torqflow

Additional Notes

  • The powershift transmission in the Komatsu Tusk BX20 series holds 11.8 liters of automatic transmission fluid across all listed configurations, covering the 400PD-14, 400PDS-14, 500PD-14, 500PDS-14, 600PD-14, and 600PDS-14 models, all equipped with the Komatsu 4D94E engine.
  • A powershift transmission uses hydraulic pressure to engage gear clutches automatically, meaning the fluid serves both a lubricating and a hydraulic control function, which explains why fluid condition and level are critical to transmission operation.
  • Under normal use conditions, a fluid level check is specified at every 200 hours, while a full fluid change is due at 6 months or 1,200 hours, whichever comes first.
  • The dual-trigger change interval of 6 months or 1,200 hours reflects that fluid degrades through both time-based oxidation and operational stress, so calendar time alone can warrant a change even when hour thresholds have not been reached.
  • An initial service interval applies to all listed configurations, requiring a fluid change at 1 month or 200 hours. This early change is standard practice for powershift transmissions to remove metal particles and assembly residues that accumulate during the break-in period.
  • The initial service change interval of 1 month or 200 hours is considerably shorter than the normal-use interval of 6 months or 1,200 hours, reflecting the elevated contamination risk during early operation rather than a difference in fluid capacity.
  • The 11.8-liter capacity is consistent across the 400, 500, and 600 series variants, indicating that the PD and PDS configurations within each model share the same transmission assembly despite any differences in chassis or attachment specifications.

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