System Description

The machine is equipped with a so-called "open-center hydraulic system", i.e. with engine running at constant speed the hydraulic pump conveys a constant amount of hydraulic oil.

    The hydraulic pump is a triple pump:

  • Pump (A) conveys 35 L/Min. (9.2 gpm)
  • Pump (B) conveys 25 L/Min. (6.6 gpm)
  • Pump (C) conveys 15 L/Min. (4.0 gpm)

For pumps (A) and (B) a pressure valve each is located in the solenoid valve block (D). If no pressure oil is required, the valves direct oil back to the tank via the oil cooler.

Oil flowing from oil cooler to the tank is partially directed through bevel gear drive (main gearcase) where it is used for lubrication and cooling purposes.

NOTE: A detailed list of solenoid valves can be found in Section "Service - Electrical System".


A-Pump 35 L/Min. (9.2 gpm) (hydraulic system)
B-Pump 25 L/Min. (6.6 gpm) (hydraulic system)
C-Pump 15 L/Min. (4.0 gpm) (steering system)
D-Solenoid valve block, l.h. side
E-Solenoid valve block, r.h. side

ZX013559
ZX022373
ZX022374

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