Great Plains 3PYPA Operator Manual - Manual (Page 122)

118 3PYPA Table of Contents Index Great Plains Manufacturing, Inc.
401-647M Table of Contents Index 03/20/2012
Marker Tilt Cylinder Bleeding
Crush, Pinch and Equipment Damage Hazards:
Markers must be folded and tilted down for this bleed. If tilted
up, markers would tilt down rapidly during bleed.
Normally the tilt 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
switch Off and leave it (and the Marker Fold switch)
Off during this bleed.
Refer to Figure 144 and Figure 145
4.
Leave the markers tilted down.
5. Disconnect the rod ends of both tilt cylinders.
6. Retract the tilt circuit.
7. Loosen the JIC fittings at both tilt cylinder base
ends
.
8. Set wing 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 tilt 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.
Null4:
Figure 144
Tilt Cylinder Location
25419
1
2
Null4:
Figure 145
Marker Tilt Cylinders
25062
L
R
1
1
2
2
1
2
1