Bleeding marker hydraulics – Great Plains 3S-4000F Operator Manual User Manual
Page 82
78
3S-4000
Great Plains Manufacturing, Inc.
195-394M
2014-06-10
Bleeding Marker Hydraulics
Sharp Object, Crushing and Overhead 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
unfolding markers.
Refer to Figure 85
1.
Make sure tractor hydraulic reservoir is full.
2.
With markers unfolded in field position, crack
hydraulic-hose 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 one 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 and tighten that
fitting.
4.
If you have dual markers, activate your tractor
hydraulic valve forward again until oil seeps out
around one fitting on the other marker cylinder and
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.
1
Figure 87
Bleeding Marker Hydraulics
18942