Caterpillar Bulldozers/tracked tractors

Automatic transmission fluid capacity & service interval

Caterpillar Bulldozers/tracked tractors require automatic transmission fluid with a capacity of 178 liters. Service intervals include checks at 10 hours and 500 hours, with fluid changes required every 6 months or 1000 hours. The data covers 4 configurations.

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

TypeSpecifications
  • D7R LGP, DLN (2012- )
  • Hydrostatic
  • Use: Normal
  • Capacity 178 liter
  • Check 10 hours
  • Change 6 months/ 1000 hours
  • D7R LGP, DLN (2012- )
  • Hydrostatic
  • Use: Fluid analysis
  • Capacity 178 liter
  • Check 500 hours
  • D7R XR, DJR (2012- )
  • Hydrostatic
  • Use: Normal
  • Capacity 178 liter
  • Check 10 hours
  • Change 6 months/ 1000 hours
  • D7R XR, DJR (2012- )
  • Hydrostatic
  • Use: Fluid analysis
  • Capacity 178 liter
  • Check 500 hours

Additional Notes

  • The Caterpillar D7R LGP (DLN) and D7R XR (DJR), both from 2012 onward, share an identical hydrostatic transmission fluid capacity of 178 liters, indicating a large-volume system typical of heavy tracked tractor powertrains where substantial fluid reserves support continuous hydraulic load demands.
  • Under normal use conditions, the hydrostatic transmission on both D7R variants requires a check interval of 10 hours, which reflects the frequency expected during early operational monitoring or routine pre-shift inspections on heavy equipment.
  • The normal use change interval for both D7R configurations is set at 6 months or 1,000 hours, whichever comes first, meaning either the calendar period or the operational hour threshold triggers a fluid change obligation.
  • When fluid analysis is applied instead of the standard normal use schedule, the check interval extends to 500 hours on both the D7R LGP (DLN) and D7R XR (DJR), replacing the 10-hour check cadence with a laboratory-driven monitoring approach.
  • No fluid change interval is listed under the fluid analysis condition for either D7R variant, as the fluid analysis rows specify only a capacity and a 500-hour check interval without an associated change schedule.
  • The 178-liter capacity figure appears consistently across all four specification rows, covering both D7R configurations and both use conditions, confirming the hydrostatic transmission volume is uniform regardless of service approach.

Other Systems