Gradall Material handlers

Brake fluid capacity & service interval

Gradall Material handlers use Brake fluid with a capacity of 1,2 liters. Service intervals include checks at 250 hours and changes at 1000 hours or 6 months. The data covers 2 configurations.

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

TypeSpecifications
  • 534B-9
  • Wet brakes
  • Use: Normal
  • Capacity 1,2 liter (each)
  • Check 250 hours
  • Change 1000 hours
  • 544B
  • Wet brakes
  • Use: Normal
  • Capacity 1,2 liter (each)
  • Check 250 hours
  • Change 6 months/ 1000 hours

Additional Notes

  • The Gradall Material Handlers 534B-9 and 544B both carry a brake fluid capacity of 1.2 liters per wet brake assembly, where "each" indicates the figure applies individually to every brake unit rather than to the total system volume.
  • Wet brakes are enclosed brake assemblies that run submerged in oil or fluid, which is why a dedicated fluid capacity and a separate service schedule are assigned to them rather than treating them as a dry mechanical component.
  • Both the 534B-9 and 544B share a 250-hour brake fluid check interval under normal use conditions, meaning the fluid level and condition in each wet brake assembly are inspected at that frequency without a full drain and refill.
  • The 534B-9 specifies a change interval of 1000 hours under normal use, while the 544B carries a change interval expressed as 6 months or 1000 hours, whichever comes first, making the 544B subject to a time-based threshold that the 534B-9 does not carry.
  • The addition of a 6-month calendar limit on the 544B means fluid replacement can be triggered by elapsed time alone, even when the machine has not accumulated 1000 operating hours within that period.

Other Systems