Iseki TF

Power steering fluid capacity & service interval

Iseki TF models utilize power steering fluid with a capacity of 1,1 liters. Service intervals include checks every 100 hours and changes every 300 hours. The data covers 8 configurations.

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

TypeSpecifications
TF 317 FH (Hydrostatic) (1998- )
  • Use: Normal
  • Capacity 1,1 liter
  • Check 100 hours
  • Change 300 hours
TF 317 FM (Mechanical) (1998- )
  • Use: Normal
  • Capacity 1,1 liter
  • Check 100 hours
  • Change 300 hours
TF 321 FH (Hydrostatic) (1998- )
  • Use: Normal
  • Capacity 1,1 liter
  • Check 100 hours
  • Change 300 hours
TF 321 FM (Mechanical) (1998- )
  • Use: Normal
  • Capacity 1,1 liter
  • Check 100 hours
  • Change 300 hours
TF 325 FH (Hydrostatic) (1998- )
  • Use: Normal
  • Capacity 1,1 liter
  • Check 100 hours
  • Change 300 hours
TF 325 FM (Mechanical) (1998- )
  • Use: Normal
  • Capacity 1,1 liter
  • Check 100 hours
  • Change 300 hours
TF 330 FH (Hydrostatic) (1998- )
  • Use: Normal
  • Capacity 1,1 liter
  • Check 100 hours
  • Change 300 hours
TF 330 FM (Mechanical) (1998- )
  • Use: Normal
  • Capacity 1,1 liter
  • Check 100 hours
  • Change 300 hours

Additional Notes

  • The Iseki TF series power steering system holds 1.1 liters of fluid across all listed configurations, covering the TF 317, TF 321, TF 325, and TF 330 variants. A capacity at this level is typical of a compact tractor steering circuit, where the reservoir and hydraulic lines together account for a relatively small total volume.
  • The 1.1-liter capacity figure applies uniformly whether the transmission type is hydrostatic (FH) or mechanical (FM), indicating that the power steering circuit is independent of the transmission configuration in these models.
  • A fluid level check is specified at every 100 operating hours under normal use conditions. On compact agricultural tractors, hour-based intervals reflect the variable nature of seasonal and field use more accurately than calendar-based schedules.
  • A full fluid change is specified at 300 operating hours under normal use conditions, meaning three check intervals pass before a drain-and-refill is due. This ratio is common in hydraulic steering systems where contamination and fluid degradation accumulate gradually under steady working loads.
  • All eight configurations share identical service intervals of 100-hour checks and 300-hour changes, with no variation between the hydrostatic and mechanical transmission variants across the TF 317, TF 321, TF 325, and TF 330 models.
  • All specifications listed apply to normal use conditions. In agricultural equipment, normal use typically refers to standard field operation without the additional thermal and mechanical stress associated with severe-duty classifications such as continuous heavy draft work or extreme ambient temperatures.

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