Komatsu Forklift trucks, diesel - BX20 series, -14

Differential fluid capacity & service interval

Komatsu Forklift trucks, diesel - BX20 series, -14 require 5,7 liters of differential fluid. Service intervals include checks every 3 months or 600 hours and changes at 1 month or 200 hours and 6 months or 1200 hours. The data covers 12 configurations.

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

TypeSpecifications
FD20T-14, Komatsu 4D94E
  • Use: Normal
  • Capacity 5,7 liter
  • Check 3 months/ 600 hours
  • Change 6 months/ 1200 hours
FD20T-14, Komatsu 4D94E
  • Use: Initial service
  • Capacity 5,7 liter
  • Change 1 months/ 200 hours
FD20TUS-14, Komatsu 4D94E
  • Use: Normal
  • Capacity 5,7 liter
  • Check 3 months/ 600 hours
  • Change 6 months/ 1200 hours
FD20TUS-14, Komatsu 4D94E
  • Use: Initial service
  • Capacity 5,7 liter
  • Change 1 months/ 200 hours
FD25T-14, Komatsu 4D94E
  • Use: Normal
  • Capacity 5,7 liter
  • Check 3 months/ 600 hours
  • Change 6 months/ 1200 hours
FD25T-14, Komatsu 4D94E
  • Use: Initial service
  • Capacity 5,7 liter
  • Change 1 months/ 200 hours
FD25TUS-14, Komatsu 4D94E
  • Use: Normal
  • Capacity 5,7 liter
  • Check 3 months/ 600 hours
  • Change 6 months/ 1200 hours
FD25TUS-14, Komatsu 4D94E
  • Use: Initial service
  • Capacity 5,7 liter
  • Change 1 months/ 200 hours
FD30T-14, Komatsu 4D94E
  • Use: Normal
  • Capacity 5,7 liter
  • Check 3 months/ 600 hours
  • Change 6 months/ 1200 hours
FD30T-14, Komatsu 4D94E
  • Use: Initial service
  • Capacity 5,7 liter
  • Change 1 months/ 200 hours
FD30TUS-14, Komatsu 4D94E
  • Use: Normal
  • Capacity 5,7 liter
  • Check 3 months/ 600 hours
  • Change 6 months/ 1200 hours
FD30TUS-14, Komatsu 4D94E
  • Use: Initial service
  • Capacity 5,7 liter
  • Change 1 months/ 200 hours

Additional Notes

  • The differential fluid capacity of 5.7 liters applies uniformly across all FD20T-14, FD20TUS-14, FD25T-14, FD25TUS-14, FD30T-14, and FD30TUS-14 models in the Komatsu BX20 series, each powered by the 4D94E engine. A consistent capacity across multiple load-rated variants typically reflects a shared axle and differential housing design.
  • All models in the series carry a dual-trigger service interval for normal use, where a fluid check falls due at 3 months or 600 hours, whichever comes first. Interval specifications expressed as time-or-hours thresholds account for machines that accumulate operating hours slowly, ensuring calendar-based maintenance still occurs.
  • The normal-use fluid change interval is set at 6 months or 1,200 hours across all listed configurations. At 1,200 hours, a forklift operating in a standard single-shift environment would represent roughly two years of use, making the 6-month calendar trigger the more frequent governing factor in many applications.
  • An initial service change interval of 1 month or 200 hours is specified for all models, separate from the normal-use schedule. Early drain intervals of this type are standard practice for gear-type differentials, as the break-in period generates fine metallic particles from component seating that accelerate fluid degradation.
  • The initial service interval applies only to a fluid change, with no check interval listed for that period. In contrast, the normal-use schedule includes both a check and a change interval, reflecting the different monitoring requirements once the differential has passed the break-in phase.
  • The FD20T-14 and FD20TUS-14 share identical differential fluid capacities and service intervals despite the "US" suffix denoting a different configuration variant. The same pattern holds for the FD25T and FD25TUS, and the FD30T and FD30TUS pairings, indicating the suffix designation does not affect differential servicing requirements.

Other Systems