Ursus 02/04 series

Power steering fluid capacity & service interval

Ursus 02/04 series power steering fluid capacity ranges from 5,5 to 10 liters. Service intervals include checking at 100 hours and changing at 800 hours. The data covers 4 configurations.

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

TypeSpecifications
1454 (1983-1985)
  • Use: Normal
  • Capacity 10 liter
  • Check 100 hours
  • Change 800 hours
902, 904 (1983-1985)
  • Use: Normal
  • Capacity 5,5 liter
  • Check 100 hours
  • Change 800 hours
1604 (1979-1985)
  • Use: Normal
  • Capacity 10 liter
  • Check 100 hours
  • Change 800 hours
1002, 1004 (1978-1985)
  • Use: Normal
  • Capacity 5,5 liter
  • Check 100 hours
  • Change 800 hours

Additional Notes

  • The Ursus 02/04 series power steering systems are specified in operating hours rather than calendar or mileage intervals, which is standard practice for agricultural machinery where annual usage varies widely between operators.
  • The 1002 and 1004 models covering 1978-1985 carry a power steering fluid capacity of 5.5 liters, a figure consistent with smaller-displacement tractor steering circuits of that era.
  • The 902 and 904 models from 1983-1985 share the same 5.5-liter capacity as the 1002 and 1004, placing both pairings in the lower capacity group within the series.
  • The 1454 and 1604 models each hold 10 liters of power steering fluid, nearly double the capacity of the smaller models, reflecting the larger hydraulic steering circuits associated with higher-horsepower tractors.
  • Across all four configurations, the fluid check interval is set at 100 hours under normal use conditions, indicating a relatively frequent inspection cycle relative to the 800-hour change interval.
  • The change interval of 800 hours applies uniformly across the 1002, 1004, 902, 904, 1454, and 1604 under normal use conditions, meaning the fluid is replaced roughly every eight check cycles.
  • The 1604, with production beginning in 1979, entered the lineup one year after the 1002 and 1004, yet shares the same 800-hour change interval and 10-liter capacity as the later 1454 introduced in 1983.
  • The ratio of check interval to change interval, 100 hours versus 800 hours, suggests the specifications account for gradual fluid degradation or minor leakage that warrants monitoring well before a full drain and refill is required.

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