Prentice Feller bunchers

Differential fluid capacity & service interval

Prentice Feller bunchers require differential fluid with a capacity of 52 liters. Service intervals include checking at 50 hours and 500 hours, and changing every 12 months or 2000 hours. The data covers 16 configurations.

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

TypeSpecifications
  • 2470C, W2M (2012- )
  • Front
  • Use: Normal
  • Capacity 52 liter
  • Check 50 hours
  • Change 12 months/ 2000 hours
  • 2470C, W2M (2012- )
  • Front
  • Use: Fluid analysis
  • Capacity 52 liter
  • Check 500 hours
  • 2470C, W2M (2012- )
  • Rear
  • Use: Normal
  • Capacity 52 liter
  • Check 50 hours
  • Change 12 months/ 2000 hours
  • 2470C, W2M (2012- )
  • Rear
  • Use: Fluid analysis
  • Capacity 52 liter
  • Check 500 hours
  • 2570C, W57 (2012- )
  • Front
  • Use: Normal
  • Capacity 52 liter
  • Check 50 hours
  • Change 12 months/ 2000 hours
  • 2570C, W57 (2012- )
  • Front
  • Use: Fluid analysis
  • Capacity 52 liter
  • Check 500 hours
  • 2570C, W57 (2012- )
  • Rear
  • Use: Normal
  • Capacity 52 liter
  • Check 50 hours
  • Change 12 months/ 2000 hours
  • 2570C, W57 (2012- )
  • Rear
  • Use: Fluid analysis
  • Capacity 52 liter
  • Check 500 hours
  • 2670C, W67 (2012- )
  • Front
  • Use: Normal
  • Capacity 52 liter
  • Check 50 hours
  • Change 12 months/ 2000 hours
  • 2670C, W67 (2012- )
  • Front
  • Use: Fluid analysis
  • Capacity 52 liter
  • Check 500 hours
  • 2670C, W67 (2012- )
  • Rear
  • Use: Normal
  • Capacity 52 liter
  • Check 50 hours
  • Change 12 months/ 2000 hours
  • 2670C, W67 (2012- )
  • Rear
  • Use: Fluid analysis
  • Capacity 52 liter
  • Check 500 hours
  • 2570C, F1B (2009- )
  • Front
  • Use: Normal
  • Capacity 52 liter
  • Check 500 hours
  • Change 12 months/ 2000 hours
  • 2570C, F1B (2009- )
  • Rear
  • Use: Normal
  • Capacity 52 liter
  • Check 500 hours
  • Change 12 months/ 2000 hours
  • 2670C, B3E (2009- )
  • Front
  • Use: Normal
  • Capacity 52 liter
  • Check 500 hours
  • Change 12 months/ 2000 hours
  • 2670C, B3E (2009- )
  • Rear
  • Use: Normal
  • Capacity 52 liter
  • Check 500 hours
  • Change 12 months/ 2000 hours

Additional Notes

  • All configurations across the Prentice Feller bunchers 2470C, 2570C, and 2670C share a uniform front and rear differential fluid capacity of 52 liters. A capacity at this scale is consistent with heavy-duty axle housings found in large forestry equipment, where substantial fluid volume supports lubrication under high load and continuous operation.
  • The 2570C with engine code F1B and the 2670C with engine code B3E, both introduced from 2009, specify a 500-hour check interval for both front and rear differentials under normal use conditions. A 500-hour check interval places routine inspection at a relatively infrequent cadence, reflecting confidence in fluid stability over extended operating periods.
  • The 2470C (W2M), 2570C (W57), and 2670C (W67) configurations, all introduced from 2012, specify a significantly shorter 50-hour check interval for both front and rear differentials under normal use. A 50-hour interval represents a much more frequent inspection schedule compared to the 500-hour interval on the earlier engine-coded variants, indicating a tighter monitoring requirement for these configurations.
  • The change interval for all configurations under normal use is set at 12 months or 2000 hours, whichever comes first. The dual-trigger structure of a time-based limit alongside an hours-based limit accounts for machines that accumulate operating hours slowly, ensuring fluid degradation from age alone does not go unaddressed.
  • The W2M, W57, and W67 configurations each carry a fluid analysis condition alongside the normal use condition for both front and rear differentials. Under fluid analysis, the check interval extends to 500 hours, and no change interval is specified, meaning the fluid change schedule under analysis is determined by the results of the analysis rather than a fixed interval.
  • The front and rear differential specifications are identical in capacity and interval for every configuration listed. Both axles share the 52-liter fill and the same check and change schedules within each configuration, indicating no differentiation between front and rear axle service requirements across these models.
  • The 2009-introduced F1B and B3E engine-coded variants do not carry a fluid analysis condition in the specifications, while the 2012-introduced W2M, W57, and W67 variants do. The addition of a fluid analysis service path in the later configurations introduces an alternative maintenance route tied to laboratory assessment of fluid condition rather than fixed time or hour thresholds.

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