Bleeding marker hydraulics, In-line filters – Great Plains 3S-3000HDF Operator Manual v1 User Manual
Page 77
Great Plains Manufacturing, Inc.
Maintenance and Lubrication
73
2014-07-01
195-441M
Bleeding Marker Hydraulics
Crushing and Sharp Object Hazard:
You may be injured if hit by a folding or unfolding marker.
Markers may fall quickly and unexpectedly if the hydraulics
fail. Never allow anyone near the drill when folding or unfold-
ing markers.
1.
Review warnings, bleeding notes and system
information on page 69.
Refer to Figure 74
2.
With markers unfolded in field position, crack
hydraulic-hose JIC fittings
at base and rod ends of
each marker cylinder.
3.
With tractor at idle speed, activate tractor hydraulic
valve forward until oil appears at a fitting. When oil
begins to seep out around a fitting, tighten that
fitting. Reverse the tractor hydraulic valve until oil
appears at opposite hose fitting. Tighten that fitting.
4.
If you have dual markers, activate tractor hydraulic
valve forward again until oil seeps out around a fitting
on the other marker cylinder. Tighten that fitting.
Reverse tractor hydraulic valve until oil seeps out
around remaining hose fitting and tighten it.
5.
Fold and unfold markers slowly to work out all air.
Note: Use caution when folding and unfolding markers for
the first time, checking for pinching and kinking of
hoses.
In-Line Filters
If the raising or lowering times of the openers slow
noticeably, check the in-line filters and clean if needed.
Refer to Figure 75
Two filters are located on one each of the down-pressure
adjustment valves. If the Point Row option is installed,
another filter is located on the third adjustment valve
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Figure 74
Bleeding Marker Hydraulics
18942
1
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Figure 75
In-Line Filter Locations
22968