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Hydraulic Gear Pump
The JS7020 has a Hydraulic Gear Pump (A)
that is mounted directly to the output shaft of the
combine's rear engine housing. It provides the
necessary hydraulic flow to operate the leveling
systems functions. The gear pump isolates
the leveling system's hydraulic flow from the
remaining combine's hydraulics.
JS9020 Hydraulic Flow
Hydraulic flow for the JS9020 leveling system
is supplied from the "T" located in the Deere
pressure supply line on the header height valve
block (B). This valve is located on the left side
of the combine below the cab. From this "T" oil
flows to the Hillco leveling valve located behind
the inspection door on the operator's platform.
Oil is returned from the leveling valve to a "T"
located in the John Deere header height valve
block.
Leveling Control Manifold
The leveling control manifold (B) is located
behind the inspection door on the operator's
platform. The operator electronically activates
the manifold by either pushing the manual
leveling buttons or having it in automatic mode.
The manifold diverts hydraulic flow to the
corresponding leveling cylinder to rotate the
chassis.
D-171206CMA01C
A
A - Gear Pump
Hillco Technologies, Inc.
12
B
B - Header Height Valve Block
C - Leveling Manifold
C
Sept, 2022
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