Manitowoc Mobile cranes

Transfer case fluid capacity & service interval

Manitowoc mobile cranes utilize transfer case fluid with a capacity range of 8 to 15 liters. The data covers 5 configurations.

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

TypeSpecifications
GMK6300L, Mercedez-Benz OM926LA (2018- )
  • Use: Normal
  • Capacity 15 liter
GMK6300L-1, Mercedez-Benz OM926LA (2018- )
  • Use: Normal
  • Capacity 15 liter
GMK6400, Mercedes-Benz OM502LA (2018- )
  • Use: Normal
  • Capacity 8 liter
GMK4080-2, Mercedes-Benz OM470LA (2017- )
  • Use: Normal
  • Capacity 14 liter
GMK4090, Mercedes-Benz OM470LA (2017- )
  • Use: Normal
  • Capacity 14 liter

Additional Notes

  • The Manitowoc GMK4080-2 and GMK4090, both powered by the Mercedes-Benz OM470LA engine from 2017, share an identical transfer case (transferbox) fluid capacity of 14 liters under normal use conditions.
  • A 14-liter transfer case capacity is relatively substantial for mobile crane applications, reflecting the heavy-duty power distribution demands placed on the drivetrain of large all-terrain cranes.
  • The GMK6300L and GMK6300L-1, both equipped with the Mercedes-Benz OM926LA engine from 2018, each carry a transferbox fluid capacity of 15 liters under normal use conditions, the highest capacity among the configurations listed.
  • The one-liter difference between the OM470LA-powered models at 14 liters and the OM926LA-powered GMK6300L variants at 15 liters corresponds to a change in both engine family and crane model series, suggesting differing transfer case assemblies between the two groups.
  • The Manitowoc GMK6400, fitted with the Mercedes-Benz OM502LA engine from 2018, has a notably lower transferbox fluid capacity of 8 liters under normal use conditions, which is significantly less than the other configurations in the same model year group.
  • The OM502LA is a V8 engine, while the OM470LA and OM926LA are inline-six units. The GMK6400's lower transfer case capacity of 8 liters despite its larger engine displacement points to a fundamentally different transfer case design rather than a scaled version of those used in the other models.
  • All five configurations specify normal use conditions, meaning the listed capacities apply to standard operating environments rather than severe-duty cycles, which in heavy equipment contexts typically involve extreme loads, temperatures, or terrain.

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