Great Plains 3PYPA Operator Manual - Manual (Page 123)

Great Plains Manufacturing, Inc. Table of Contents Index Maintenance and Lubrication 119
03/20/2012 Table of Contents Index 401-647M
Marker Fold Cylinder Bleeding
Refer to Figure 146 and Figure 147
Normally the marker hydraulics are bled at the factory
before shipping, and bleeding should not be required
other than to fold fully and hold lever on for one minute or
until all cylinders reach the end of their stroke.
1. Consult complete tilt circuit hydraulic diagram:
“Wing Fold and Marker Hydraulics”, page 145
(partially repeated here for reference)
2. Check that tractor hydraulic reservoir is full.
3. Unfold the wings (page 33). Turn the CFM Wing Fold
switch Off and leave it (and the Marker Tilt switch)
Off during this bleed.
4. Leave the markers tilted down for safer access to the
marker fold cylinders
.
5. Disconnect rod ends of both marker fold cylinders.
6. Retract the marker fold circuit.
7. Loosen the JIC fittings at both marker fold cylinder
base ends
.
8. Set marker fold circuit to Extend until fluid emerges.
9. Neutralize the circuit and secure the fittings.
10. Extend the tilt rods.
11. Loosen the JIC fittings at both marker fold cylinder
rod ends .
12. Set tilt circuit to Retract until fluid emerges.
13. Neutralize the circuit and secure the fittings.
14. Re-attach the rod ends to the markers.
Marker Grease Seal Cap
If grease seal cap for marker-disk-hub bearings is dam-
aged or missing, disassemble and clean hub. Repack
with grease and install new seal or grease cap.
Null4:
Figure 146
Marker Fold Cylinder Location
25420
3
3
4
Null4:
Figure 147
Marker Fold Cylinders
25062
L
R
4
4
5
5
5
4