Komatsu Forklift trucks, diesel - FH series, FH-1

Differential fluid capacity & service interval

Komatsu Forklift trucks, diesel - FH series, FH-1 differential fluid capacity is 11 liters. Service intervals include checks at 1 month or 200 hours and changes at 6 months or 1200 hours. The data covers 3 configurations.

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

TypeSpecifications
  • FH40-1, Komatsu SAA4D95LE-5-C T4i (138001 ->)
  • Front
  • Use: Normal
  • Capacity 11 liter
  • Check 1 months/ 200 hours
  • Change 6 months/ 1200 hours
  • FH45-1, Komatsu SAA4D95LE-5-C T4i (138001 ->)
  • Front
  • Use: Normal
  • Capacity 11 liter
  • Check 1 months/ 200 hours
  • Change 6 months/ 1200 hours
  • FH50-1, Komatsu SAA4D95LE-5-C T4i (138001 ->)
  • Front
  • Use: Normal
  • Capacity 11 liter
  • Check 1 months/ 200 hours
  • Change 6 months/ 1200 hours

Additional Notes

  • The front differential on the Komatsu FH40-1, FH45-1, and FH50-1 each holds 11 liters of fluid, a capacity figure that reflects a service fill level rather than a full overhaul or dry fill quantity.
  • All three variants covered here share an identical 11-liter front differential capacity, indicating no variation in this specification across the FH40-1, FH45-1, and FH50-1 within the SAA4D95LE-5-C T4i engine configuration.
  • The check interval for the front differential fluid is set at 1 month or 200 hours under normal use conditions, whichever comes first, reflecting a relatively frequent monitoring schedule for a heavy-duty industrial application.
  • The fluid change interval is specified at 6 months or 1200 hours under normal use conditions, meaning the drain-and-refill cycle occurs six times less frequently than the check interval on an hourly basis.
  • All specifications listed apply to serial numbers from 138001 onward, meaning units produced before that serial number are outside the scope of these figures.
  • The use condition for all three rows is normal, so the 1-month/200-hour check and 6-month/1200-hour change intervals are tied specifically to standard operating environments rather than severe-duty cycles.

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