Case - IH 43/45

Manual transmission fluid capacity & service interval

Case - IH 43/45 uses manual transmission fluid with a capacity range of 42,5 to 45,5 liters. Service intervals include checking at 200 hours and changing at 1600 hours. The data covers 5 configurations.

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

TypeSpecifications
743 XL (1985-1990)
  • Use: Normal
  • Capacity 45,5 liter
  • Check 200 hours
  • Change 1600 hours
  • Code: 16/4
743 XL (1985-1990)
  • Use: Normal
  • Capacity 45,5 liter
  • Check 200 hours
  • Change 1600 hours
  • Code: 8/4
745 XL (1985-1990)
  • Use: Normal
  • Capacity 45,5 liter
  • Check 200 hours
  • Change 1600 hours
  • Code: 16/4
745 XL (1985-1990)
  • Use: Normal
  • Capacity 45,5 liter
  • Check 200 hours
  • Change 1600 hours
  • Code: 8/4
845 XL, XLA (1985-1990)
  • Use: Normal
  • Capacity 42,5 liter
  • Check 200 hours
  • Change 1600 hours
  • Code: 16/4

Additional Notes

  • The Case - IH 43/45 series manual transmission fluid specifications cover the transaxle assembly across all listed variants, meaning the capacity figures represent the full transaxle fill rather than a partial or top-up quantity.
  • The 743 XL and 745 XL share an identical transaxle fluid capacity of 45.5 liters under normal use conditions, while the 845 XL and 845 XLA carry a slightly lower capacity of 42.5 liters under the same conditions.
  • A 45.5-liter transaxle capacity is a substantial volume, consistent with integrated transmission and axle housings common in larger agricultural equipment, where a single shared sump serves multiple drivetrain functions.
  • The 845 XL and 845 XLA share the same 42.5-liter capacity figure, indicating no fluid volume difference between the standard and XLA trim variants of that model.
  • All five listed configurations share a fluid check interval of 200 hours under normal use, establishing a consistent inspection frequency across the 743 XL, 745 XL, and 845 XL/XLA variants.
  • The fluid change interval across all listed variants is 1,600 hours under normal use conditions, a figure that reflects the extended service cycles typical of heavy-duty agricultural transaxle systems operating under routine workloads.
  • The ratio between the check interval (200 hours) and the change interval (1,600 hours) means the transaxle fluid is inspected eight times before a full drain and refill is due, under normal use conditions.

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