GREAT PLAINS Terra Max HT1100-20 Посібник з польових налаштувань - Сторінка 4
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Hydraulic Down Pressure Adjustment: (HT1100-20,
HT1100-25, HT1100-30)
Note: This setup procedure is for tractors with closed
center pressure compensated or pressure and flow
compensating hydraulic systems. Open center hydrau-
lics are NOT SUPPORTED.
1) With the machine unfolded, engage the fold/unfold
hydraulics for continuous flow (unfold position).
2) From the tractor cab, adjust the hydraulic flow so the
needle on the bypass gauge is in the green zone 1000-
1500 psi.
Note: The faster the flow of oil through the
system the greater the potential for oil heating, prema-
ture wear or tractor damage.
3) At the valve, adjust the valve to set the initial down
pressure. This is usually set at 300-400 psi (do not
exceed 800 psi).
During field operation, if the wings are running too high,
increase the pressure setting to help level the machine.
If the center of the machine is running too high,
decrease the pressure setting.
Note: When operating machine with the blades in
angled position it is generally unnecessary to apply
wing down pressure. Only in very hard ground will wing
down pressure be necessary.
CAUTION: When not operating with live down pressure
the fold system must be in "FLOAT" position. Failure to
operate in either float or active down pressure will dam-
age the fold system. See your tractor operator's manual
to set system to "FLOAT "position if necessary.
Gang Angle Adjustment:
Several conditions will dictate the gang angle setting
that will accomplish the desired result:
Research has shown that 3-5 degree of gang angle is
recommended for most applications.
1) The Terra Max may be operated with gangs running
from 0-8 degrees. Changing the angle does affect the
operation of the unit. As indicated above, if the gangs
are operated at an angle, down pressure is generally
unnecessary. Operating speeds will need to be less
when operating with the gangs angled 3-6 degrees.
Operating speeds should be from 7-9 mph when oper-
ating gangs in the angled position and from 8-10 mph
when operating in the straight position.
2) When operating the gangs in the straight position (0
degrees), down pressure may be necessary, usually
between 200-400 psi.
CAUTION: When not operating with live down pressure
the fold system must be in "FLOAT" position. Failure to
operate in either float or active down pressure will dam-
age the fold system. See your tractor operator's manual
to set system to "FLOAT "position if necessary.
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