Hürlimann VDT

Power steering fluid capacity & service interval

Hürlimann VDT power steering fluid capacity is 41 liters. Service intervals include checking at 50 hours and changing at 1200 hours. The data covers 3 configurations.

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

TypeSpecifications
  • 305 VDT (1993-1996)
  • Transaxle/hydraulic system
  • Use: Normal
  • Capacity 41 liter
  • Check 50 hours
  • Change 1200 hours
  • 306 VDT (1993-1996)
  • Transaxle/hydraulic system
  • Use: Normal
  • Capacity 41 liter
  • Check 50 hours
  • Change 1200 hours
  • 307 VDT (1993-1996)
  • Transaxle/hydraulic system
  • Use: Normal
  • Capacity 41 liter
  • Check 50 hours
  • Change 1200 hours

Additional Notes

  • The Hürlimann VDT power steering fluid system is shared with the transaxle and hydraulic system, meaning the 41-liter capacity figure reflects a combined reservoir rather than a dedicated power steering circuit alone.
  • All three variants — the 305, 306, and 307 VDT — carry an identical 41-liter capacity for the transaxle/hydraulic/power steering system across the full 1993-1996 model year span.
  • A 41-liter capacity is notably large and consistent with agricultural tractor hydraulic systems, where a single shared sump serves multiple functions simultaneously.
  • The check interval is set at 50 hours of operation under normal use conditions, which in tractor service terms represents a relatively frequent monitoring schedule given the shared nature of the fluid circuit.
  • The change interval of 1,200 hours under normal use conditions applies uniformly to the 305, 306, and 307 VDT, indicating no differentiation in fluid life expectancy across the three model variants.
  • In hour-based service intervals typical of agricultural equipment, 1,200 hours represents a substantial drain period, reflecting the high fluid volume and the stable operating demands of a combined hydraulic sump.

Other Systems