International Harvester 44

Coolant capacity & service interval

International Harvester 44 uses coolant with a capacity range of 17,5 to 21,5 liters. Service intervals consist of a 50 hour check and a 1200 hour change. The data covers 4 configurations.

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

TypeSpecifications
844 XL (1981-1985)
  • Use: Normal
  • Capacity 19,5 liter
  • Check 50 hours
  • Change 1200 hours
644 (1975-1980)
  • Use: Normal
  • Capacity 17,5 liter
  • Check 50 hours
744 (1975-1980)
  • Use: Normal
  • Capacity 17,5 liter
  • Check 50 hours
844 S (1974-1985)
  • Use: Normal
  • Capacity 19,5-21,5 liter
  • Check 50 hours
  • Change 1200 hours

Additional Notes

  • The International Harvester 644 and 744 share an identical cooling system capacity of 17.5 liters, while the 844 S carries a notably larger range of 19.5 to 21.5 liters depending on configuration.
  • The 844 XL cooling system holds 19.5 liters, placing it at the lower end of the 844 S capacity range, which spans from 19.5 to 21.5 liters.
  • A variable capacity range of 19.5 to 21.5 liters on the 844 S suggests the system volume differs across sub-variants or engine configurations within that model designation.
  • All four configurations share a 50-hour coolant check interval under normal use conditions, regardless of differences in system capacity.
  • The 644 and 744 specifications include only a check interval at 50 hours, with no coolant change interval listed, whereas the 844 S and 844 XL both carry a 1,200-hour change interval alongside the same 50-hour check.
  • A 1,200-hour coolant change interval on the 844 S and 844 XL reflects a long-cycle maintenance schedule typical of agricultural machinery operating under normal conditions.
  • The 844 S covers the widest production span among the listed configurations, running from 1974 to 1985, while the 844 XL entered the specification range later, from 1981 to 1985.
  • The 644 and 744 share not only identical capacities but also identical production year ranges of 1975 to 1980, indicating closely related engineering across those two variants.

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