Case - IH 40

Manual transmission fluid capacity & service interval

Case - IH 40 uses manual transmission fluid with a capacity range of 34,5 to 37,5 liters. Service intervals consist of checking every 200 hours and changing every 1600 hours. The data covers 6 configurations.

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

TypeSpecifications
440 (1991-1992)
  • Use: Normal
  • Capacity 37,5 liter
  • Check 200 hours
  • Change 1600 hours
  • Code: 16/8
540 (1991- )
  • Use: Normal
  • Capacity 37,5 liter
  • Check 200 hours
  • Change 1600 hours
  • Code: 16/8
640 (1991- )
  • Use: Normal
  • Capacity 37,5 liter
  • Check 200 hours
  • Change 1600 hours
  • Code: 16/8
740 (1991- )
  • Use: Normal
  • Capacity 34,5 liter
  • Check 200 hours
  • Change 1600 hours
  • Code: 16/8
840 (1991- )
  • Use: Normal
  • Capacity 34,5 liter
  • Check 200 hours
  • Change 1600 hours
  • Code: 16/8
940 (1991-1992)
  • Use: Normal
  • Capacity 34,5 liter
  • Check 200 hours
  • Change 1600 hours
  • Code: 16/8

Additional Notes

  • The Case-IH 40 series manual transmission fluid specifications cover six configurations: the 440, 540, 640, 740, 840, and 940, all with a 1991 starting year under normal use conditions.
  • The 440 and 540 and 640 variants share a manual transmission fluid capacity of 37.5 liters, while the 740, 840, and 940 variants each carry 34.5 liters — a difference of 3 liters between the two groups.
  • A capacity figure of 34.5 to 37.5 liters is consistent with a large agricultural transmission housing that integrates the gearbox with other drivetrain components, rather than a standalone passenger-vehicle gearbox where capacities are typically measured in under 3 liters.
  • All six configurations share an identical fluid check interval of 200 operating hours under normal use, regardless of the capacity difference between the lower- and higher-numbered variants.
  • The fluid change interval of 1600 operating hours applies uniformly across all six configurations. In agricultural equipment, hour-based intervals reflect engine runtime rather than distance, since field machines accumulate hours at variable speeds and loads.
  • The ratio between the check interval (200 hours) and the change interval (1600 hours) means fluid level is verified eight times for every full drain-and-fill cycle across all listed configurations.
  • The 440 and 940 are listed with a 1991-1992 year range, while the 540, 640, 740, and 840 carry a starting year of 1991, meaning the specifications for those four variants are not bounded by the same endpoint as the 440 and 940.

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