Claas Celtis

Automatic transmission fluid capacity & service interval

Claas Celtis automatic transmission fluid capacity is 65 liters. Service intervals include checking every 10 hours and changing every 1000 hours. The data covers 4 configurations.

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

TypeSpecifications
  • Celtis 426 (M3612DB/3612DA/3611DB) (2003-2008)
  • Hydraulic system
  • Use: Normal
  • Capacity 65 liter
  • Check 10 hours
  • Change 1000 hours
  • Celtis 436 (M3622DB/3622DA/3621DB) (2003-2008)
  • Hydraulic system
  • Use: Normal
  • Capacity 65 liter
  • Check 10 hours
  • Change 1000 hours
  • Celtis 446 (M3632DB/3632DA/3631DB) (2003-2008)
  • Hydraulic system
  • Use: Normal
  • Capacity 65 liter
  • Check 10 hours
  • Change 1000 hours
  • Celtis 456 (M3642DB/3642DA) (2003-2008)
  • Hydraulic system
  • Use: Normal
  • Capacity 65 liter
  • Check 10 hours
  • Change 1000 hours

Additional Notes

  • All four Claas Celtis variants covered in the specifications share an identical transmission/hydraulic system fluid capacity of 65 liters, which is a notably large volume reflecting a combined transmission and hydraulic reservoir rather than a standalone gearbox sump.
  • The 65-liter figure applies uniformly across the Celtis 426, 436, 446, and 456, spanning all listed model code variants from 2003-2008, indicating no capacity differentiation between the lower and higher trim designations within the range.
  • A fluid level check interval of 10 operating hours is specified under normal use conditions, a very short interval by agricultural machinery standards, consistent with the high operational demands placed on a shared transmission and hydraulic circuit in tractor applications.
  • The fluid change interval is set at 1000 operating hours under normal use conditions, a figure that translates to roughly one to two seasons of heavy field use depending on annual hours logged.
  • The check and change intervals are both tied to normal use conditions, meaning the 10-hour check and 1000-hour change schedule applies specifically within that defined operating context as listed in the specifications.
  • Each Celtis variant carries multiple factory model codes, for example the Celtis 426 is listed under M3612DB, M3612DA, and M3611DB, which indicates production variants sharing the same fluid specifications across all three codes.

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