Great Plains 3S-4000HDF Predelivery Manual - Manual (Page 25)

Setup 23
12/10/2009 195-067Q
Bleeding Marker Hydraulics
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 infor-
mation on page 19.
Refer to Figure 27
2. With markers unfolded in field position, crack hydrau-
lic-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 fit-
ting. 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.
Figure 27
Bleeding Marker Hydraulics
18942
1