McCormick MB series

Coolant capacity & service interval

McCormick MB series coolant capacity ranges from 10,5 to 15,5 liters. Service intervals require changes every 1000 hours or 12 months. The data covers 6 configurations.

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

TypeSpecifications
MB55, Perkins 1103C-33 (2006-2015)
  • Use: Normal
  • Capacity 10,5 liter
  • Change 1000 hours/ 12 months
MB65, Perkins 1104C-44 (2006-2015)
  • Use: Normal
  • Capacity 15,5 liter
  • Change 1000 hours/ 12 months
MB75, Perkins 1104C-44 (2006-2015)
  • Use: Normal
  • Capacity 15,5 liter
  • Change 1000 hours/ 12 months
MB75B, Perkins 1104A-44 (2006-2015)
  • Use: Normal
  • Capacity 15,5 liter
  • Change 1000 hours/ 12 months
MB85, Perkins 1104C-44 (2006-2015)
  • Use: Normal
  • Capacity 15,5 liter
  • Change 1000 hours/ 12 months
MB85B, Perkins 1104A-44 (2006-2015)
  • Use: Normal
  • Capacity 15,5 liter
  • Change 1000 hours/ 12 months

Additional Notes

  • The McCormick MB55 carries a 10.5-liter cooling system capacity, which is notably smaller than the 15.5-liter figure shared by all other models in the MB series. The difference reflects the MB55's smaller Perkins 1103C-33 three-cylinder engine compared to the four-cylinder Perkins 1104-series units fitted to the remaining variants.
  • The MB65, MB75, MB75B, MB85, and MB85B all share an identical 15.5-liter cooling system capacity despite being fitted with different sub-variants of the Perkins 1104 engine family. The 1104C-44 and 1104A-44 designations represent distinct engine builds, yet the cooling system volume remains consistent across all four-cylinder applications in the range.
  • The Perkins 1103C-33 in the MB55 is a three-cylinder, 3.3-liter displacement engine, while the 1104C-44 and 1104A-44 units are four-cylinder engines displacing 4.4 liters. The step up in displacement and cylinder count directly corresponds to the 5-liter increase in cooling system capacity between the MB55 and the larger models.
  • All six configurations across the 2006-2015 model range share the same coolant change interval of 1,000 hours or 12 months under normal use conditions, whichever comes first. The dual-trigger format is standard practice for agricultural equipment, accounting for machines that may accumulate hours slowly and would otherwise go extended calendar periods without a fluid change.
  • The MB75 and MB75B share the same 15.5-liter capacity and the same 1,000-hour/12-month change interval despite using different engine variants. The MB75 uses the Perkins 1104C-44 while the MB75B uses the 1104A-44, indicating that the cooling system architecture was carried over between the two builds without modification to total fluid volume.
  • The same relationship applies to the MB85 and MB85B pairing. Both hold 15.5 liters and follow the 1,000-hour/12-month interval, with the only difference being the engine sub-variant: 1104C-44 in the MB85 and 1104A-44 in the MB85B.

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