Valtra (Valmet) T4 Active

Additional Notes

• Across all six T4 Active variants covered by the 2014-2021 specifications, the front differential fluid capacity is 8.5 liters regardless of which Dana axle assembly is fitted.
• Five distinct Dana axle designations appear in the specifications: Dana 740/560, Dana 740/561, Dana 750/570, Dana 755/509, and Dana 755/510. All five share the same 8.5-liter fill capacity, meaning axle selection within the T4 Active range does not alter the service fill volume.
• The Dana 740, 750, and 755 series are heavy-duty front axle assemblies commonly used in agricultural tractors. The numeric suffixes in designations such as 740/560 typically distinguish gear ratio or hub reduction variants within the same axle family.
• The 8.5-liter capacity figure represents a service fill volume, which is the quantity of fluid required when refilling a drained but otherwise intact differential housing during routine maintenance, as opposed to an overhaul fill that may account for additional passages or components.
• The service schedule separates inspection from fluid replacement. A fluid level check is specified at 600 hours, while a full fluid change is required at 1,200 hours or 12 months, whichever comes first.
• The 600-hour check interval falls at exactly half the 1,200-hour change interval, allowing a condition assessment at the midpoint between drain cycles without requiring a full fluid replacement at that stage.
• The 12-month calendar limit on the fluid change interval means a machine with low annual hours still reaches a mandatory change point based on elapsed time alone, independent of the 1,200-hour threshold.
• All six variants, spanning the T144 A through T234 A, carry identical front differential service intervals and capacities across the 2014-2021 model years, indicating a uniform front axle servicing standard across the entire T4 Active lineup for that period.