McCormick MB series

Differential fluid capacity & service interval

McCormick MB series differential fluid capacity is 5,8 liters. Service intervals occur every 1000 hours or 12 months. The data covers 5 configurations.

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

TypeSpecifications
  • MB65, Perkins 1104C-44 (2006-2015)
  • Front, (4x4) w/o brakes
  • Use: Normal
  • Capacity 5,8 liter
  • Change 1000 hours/ 12 months
  • MB75, Perkins 1104C-44 (2006-2015)
  • Front, (4x4) w/o brakes
  • Use: Normal
  • Capacity 5,8 liter
  • Change 1000 hours/ 12 months
  • MB75B, Perkins 1104A-44 (2006-2015)
  • Front, (4x4) w/o brakes
  • Use: Normal
  • Capacity 5,8 liter
  • Change 1000 hours/ 12 months
  • MB85, Perkins 1104C-44 (2006-2015)
  • Front, (4x4) w/o brakes
  • Use: Normal
  • Capacity 5,8 liter
  • Change 1000 hours/ 12 months
  • MB85B, Perkins 1104A-44 (2006-2015)
  • Front, (4x4) w/o brakes
  • Use: Normal
  • Capacity 5,8 liter
  • Change 1000 hours/ 12 months

Additional Notes

  • The McCormick MB series front differential fluid capacity is 5.8 liters across all five configurations covered — MB65, MB75, MB75B, MB85, and MB85B — each rated for 4x4 applications without brakes.
  • A 5.8-liter fill volume for a front differential is a moderately substantial capacity, consistent with the housing size typical of compact utility tractors designed for four-wheel-drive operation.
  • All five configurations share an identical service interval of 1,000 hours or 12 months under normal use conditions, whichever comes first.
  • The dual-trigger interval structure — hours and calendar time — reflects that tractor operation can vary widely in intensity, so the 12-month limit applies even when the 1,000-hour threshold has not been reached.
  • The MB65 and MB85 both use the Perkins 1104C-44 engine, yet both carry the same 5.8-liter front differential capacity, indicating the differential specification is independent of engine displacement differences between trims.
  • The MB75B and MB85B variants use the Perkins 1104A-44 engine rather than the 1104C-44 found in the MB75 and MB85, yet the front differential capacity and service interval remain identical at 5.8 liters and 1,000 hours/12 months.
  • The specifications apply specifically to the front differential in 4x4 configurations without brakes, meaning configurations with front axle brakes fall outside the scope of these particular capacity and interval figures.

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