Crown Forklift trucks, LPG (Doosan)

Power steering fluid capacity & service interval

Crown Forklift trucks, LPG (Doosan) require power steering fluid with a capacity of 73 liters. Service intervals include checking every 10 hours and changing every 15 months or 2500 hours. The data covers 5 configurations.

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

TypeSpecifications
  • CGC35S-5, PSI 4.3L V6 Tier 3
  • And power steering system
  • Use: Normal
  • Capacity 73 liter
  • Check 10 hours
  • Change 15 months/ 2500 hours
  • CGC40S-5, PSI 4.3L V6 Tier 3
  • And power steering system
  • Use: Normal
  • Capacity 73 liter
  • Check 10 hours
  • Change 15 months/ 2500 hours
  • CGC45S-5, PSI 4.3L V6 Tier 3
  • And power steering system
  • Use: Normal
  • Capacity 73 liter
  • Check 10 hours
  • Change 15 months/ 2500 hours
  • CGC50C-5, PSI 4.3L V6 Tier 3
  • And power steering system
  • Use: Normal
  • Capacity 73 liter
  • Check 10 hours
  • Change 15 months/ 2500 hours
  • CGC55C-5, PSI 4.3L V6 Tier 3
  • And power steering system
  • Use: Normal
  • Capacity 73 liter
  • Check 10 hours
  • Change 15 months/ 2500 hours

Additional Notes

  • The Crown Forklift trucks, LPG (Doosan) CGC35S-5 through CGC55C-5 models, all equipped with the PSI 4.3L V6 Tier 3 engine, share an identical combined hydraulic and power steering system capacity of 73 liters, which reflects a shared reservoir serving both functions rather than a dedicated power steering circuit alone.
  • A 73-liter capacity is notably large relative to typical automotive power steering systems and is consistent with industrial forklift hydraulic circuits, where the same fluid reservoir supplies both the lift mast hydraulics and the steering gear simultaneously.
  • The check interval for the combined hydraulic and power steering system is set at every 10 operating hours, a frequency that reflects the continuous and load-intensive nature of forklift operation compared to road vehicle service schedules.
  • The fluid change interval is specified as 15 months or 2,500 operating hours, whichever comes first, under normal use conditions, meaning the calendar-based limit can be reached before the hour-based threshold in lower-utilization applications.
  • All five configurations — CGC35S-5, CGC40S-5, CGC45S-5, CGC50C-5, and CGC55C-5 — carry the same 73-liter capacity and identical check and change intervals, indicating no variation in the hydraulic and power steering system specification across the model range despite differences in rated lift capacity between units.