Bobcat Telescopic handlers

Transfer case fluid capacity & service interval

Bobcat Telescopic handlers require 0,8 liter of transfer case fluid. Service intervals include checking every 1 month or 200 hours and changing every 800 to 1000 hours or 12 months. The data covers 6 configurations.

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

TypeSpecifications
T35120L (2004- )
  • Use: Normal
  • Capacity 0,8 liter
  • Check 1 months/ 200 hours
  • Change 800 hours/ 12 months
T35120SL (2004- )
  • Use: Normal
  • Capacity 0,8 liter
  • Check 1 months/ 200 hours
  • Change 800 hours/ 12 months
T3571, Perkins 1104C-44T (2004-2011)
  • Use: Normal
  • Capacity 0,8 liter
  • Check 1 months/ 200 hours
  • Change 800 hours/ 12 months
T3571L, Perkins 1104C-44T (2004-2011)
  • Use: Normal
  • Capacity 0,8 liter
  • Check 1 months/ 200 hours
  • Change 800 hours/ 12 months
T40140, Perkins 1104.44T (2004-2013)
  • Use: Normal
  • Capacity 0,8 liter
  • Check 1 months/ 200 hours
  • Change 800 hours/ 12 months
T40170, Perkins 1104.44T (2004-2013)
  • Use: Normal
  • Capacity 0,8 liter
  • Check 200 hours
  • Change 1000 hours/ 12 months

Additional Notes

  • Across the Bobcat telescopic handler range covered here, the transfer case (transferbox) fluid capacity is uniformly 0.8 liter. A figure this small reflects a compact, sealed transfer unit rather than a large multi-plate assembly, and the consistent value across six distinct configurations points to a shared transfer case design used throughout the lineup.
  • The T35120L and T35120SL, both introduced in 2004, share identical transfer case service intervals: a fluid level check every 1 month or 200 hours, whichever comes first, and a full fluid change at 800 hours or 12 months. The dual-trigger check interval, combining a calendar period with an operating-hour threshold, accounts for machines that accumulate hours quickly as well as those used infrequently.
  • The Perkins 1104C-44T-powered T3571 and T3571L, covering model years 2004-2011, carry the same 800-hour or 12-month change interval as the T35120 variants, along with the same 1-month or 200-hour check schedule. The shared interval across these four models suggests the transfer case hardware and fluid volume requirements were consistent across that portion of the range.
  • The T40140 with the Perkins 1104.44T engine, spanning 2004-2013, also follows the 800-hour or 12-month change interval and the 1-month or 200-hour check cycle, keeping it aligned with the smaller-capacity T35 and T3571 models despite the T40 designation indicating a higher load capacity machine.
  • The T40170, also fitted with the Perkins 1104.44T and covering 2004-2013, is the only configuration in the group with a longer fluid change interval: 1,000 hours or 12 months. The 200-hour check interval remains, but the absence of the 1-month check trigger distinguishes the T40170 from all other models listed. The extended change interval may reflect differences in duty cycle expectations or transfer case loading for that specific variant.
  • The 12-month calendar limit on fluid changes, present across all six configurations, means the fluid is replaced at least once per year regardless of operating hours accumulated. This calendar-based ceiling is common in equipment service schedules because fluid degrades chemically over time even when the machine is idle, independent of mechanical wear.

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