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 28.6 L/min. (7.55 gpm)
• Pump (B) conveys 28.6 L/min. (7.55 gpm)
• Pump (C) conveys 10.6 L/min. (2.80 gpm)

If no pressure oil is required, the pressure valves direct pressure-free oil back to the tank.

The basic valve block (D) is suspended below the rotary intake screen on the right-hand combine side.

The valve block controls 6 different functions on the combine by means of individual modules:

• Module (E) for reverser motor oil supply.
• Module (F) for cutting platform lift and lowering.
• Module (G) for flow divider.
• Module (H) for reel lift and lowering.
• Module (J) for grain tank discharge tube swing adjustment.
• Module (K) for cylinder speed adjustment.
• Module (L) for reel fore-and-aft adjustment.

NOTE: For detailed list of the solenoid valves, see "Service - Electrical System".

A-Pump (Hydraulic System)
B-Pump (Reel Drive)
C-Pump (Steering System)
D-Solenoid Valve Block
E-Reverser Circuit
F-Header Lift
G-Inlet Port And Flow Divider
H-Reel Lift
J-Unloading Auger
K-Threshing Cylinder
L-Reel Horizontal Adjustment
M-Return Junction Block
N-Outlet Port To Reservoir

ZX,OMSLC007720 -19-07JAN97-1/1