Valtra (Valmet) T4 HiTech

Additional Notes

• Across all six T4 HiTech variants from 2015-2021, the front differential fluid capacity is specified at 8.5 liters regardless of which Dana axle assembly is fitted.
• Five distinct Dana axle designations are listed for the Valtra T4 HiTech front differential: Dana 740/560, Dana 740/561, Dana 750/570, Dana 755/509, and Dana 755/510. All share the same 8.5-liter fill capacity, indicating a consistent housing volume across these axle variants.
• The 8.5-liter capacity figure applies to a service fill context, meaning the volume of fluid required when refilling a drained but otherwise intact differential assembly during routine maintenance.
• The T144 H, T154 H, T174e H, T194 H, T214 H, and T234 H all carry identical front differential service intervals under normal use conditions, with a fluid level check specified at 600 hours and a full fluid change required at 1,200 hours or 12 months, whichever comes first.
• The 600-hour check interval represents a mid-cycle inspection point, falling at exactly half the 1,200-hour change interval. A level check at this stage allows detection of fluid loss or contamination before the full drain-and-fill service is due.
• The 12-month calendar limit on the fluid change interval means that even in low-utilization applications where 1,200 operating hours may not be reached within a year, the fluid is still subject to annual replacement under normal use conditions.
• The front differential specifications are uniform across the entire T144 H through T234 H model range for 2015-2021, meaning the axle hardware and its associated service requirements do not vary with the power output differences that distinguish individual variants within the lineup.