Great Plains 3PYP Operator Manual - Manual (Page 108)

104 3PYP Table of Contents Index Great Plains Manufacturing, Inc.
401-312M Table of Contents Index 2014-09-09
Bleeding Marker Tilt Hydraulics
Refer to Figure 133 and Figure 134.
Bleeding must be performed with markers folded and tilted
down.
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 for
your planter:
“Wing Fold with Markers (all s/n)” on page 128
(partially repeated here for reference)
2. Check that tractor hydraulic reservoir is full.
3. Unfold the wings. See “Unfolding The 3PYP” on
page 28 Turn the wing switch Off and leave it (and
the marker fold switch) Off during this bleed.
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.
Figure 133
Tilt Cylinder Location
25419
1
2
Figure 134
Marker Tilt Cylinders
25062
L
R
1
1
2
2
1
2
1