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Hydraulic Leveling Cylinders and
Counter-Balance Valves
JS7020 & JS9020
There are two leveling cylinders (A) located on the
rearward side of the leveling system's carriage.
These cylinders are pressurized by the leveling
hydraulic valve to tilt the combine chassis to correct
for slope changes.
equipped with built in hydraulic counter-balance
valves (B) that positively lock the oil into the cylinders
until a pressure signal is sent from the hydraulic
leveling valve. These counter-balance valves lock
the chassis position in the event of hydraulic hose
failure.
Leveling Cylinder Safety Stops
When the leveling cylinder safety stops are installed
on the leveling cylinders, the carriage cannot
rotate. The stops must be installed before working
on or around the leveling system and when hauling
the combine. It is recommended that the stops be
inserted during long-term storage. When the stops
are not being used, they should be stored on the
mount next to the leveling cylinder.
WARNING
Install the cylinder stops before working on
or around the leveling system.
install the cylinder stops before working on
or around the leveling system may result in
sudden chassis rotation.
D-171206CMA01C
Both leveling cylinders are
Failure to
Hillco Technologies, Inc.
B
A - Cylinder
B - Counter Balance Valve
C
C - Cylinder Safety Stops
D - Cylinder Safety Stop Holder
17
A
D
Sept, 2022
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