Caterpillar Challenger

Automatic transmission fluid capacity & service interval

Caterpillar Challenger automatic transmission fluid capacity is 124 liters. Service intervals include checks at 10 hours and changes at 1000 hours or 12 months. The data covers 3 configurations.

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

TypeSpecifications
  • 55 (1996-1998)
  • Hydraulic system
  • Use: Normal
  • Capacity 124 liter
  • Check 10 hours
  • Change 1000 hours/ 12 months
  • Code: Powershift 16/9
  • 35 (1995-1998)
  • Hydraulic system
  • Use: Normal
  • Capacity 124 liter
  • Check 10 hours
  • Change 1000 hours/ 12 months
  • Code: Powershift 16/9
  • 45 (1995-1998)
  • Hydraulic system
  • Use: Normal
  • Capacity 124 liter
  • Check 10 hours
  • Change 1000 hours/ 12 months
  • Code: Powershift 16/9

Additional Notes

  • The Caterpillar Challenger 35 and 45 share a combined transmission and hydraulic system capacity of 124 liters, which reflects a unified fluid circuit rather than separate transmission and hydraulic reservoirs.
  • The Challenger 55 carries the same 124-liter transmission and hydraulic system capacity as the 35 and 45, with model years beginning in 1996 compared to 1995 for the other two variants.
  • A 124-liter capacity is a substantial service fill volume, consistent with large agricultural tractor systems where the transmission and hydraulic circuits share a common sump.
  • All three models specify a fluid check interval of every 10 hours of operation under normal use conditions, indicating frequent monitoring is expected given the demands placed on a shared transmission and hydraulic system.
  • The change interval across all three models is set at 1000 hours or 12 months under normal use conditions, meaning whichever threshold is reached first would govern the service event.
  • The 12-month calendar limit on the change interval means that even low-utilization machines reaching fewer than 1000 hours annually are still subject to a fluid change within that period under normal use conditions.

Other Systems