Great Plains
| 401-647M | 2019-06-11
Table of Contents
Index
120
3PYPA
Table of Contents
Index
Maintenance and Lubrication
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 148
(partially repeated here for reference)
2. Check that tractor hydraulic reservoir is full.
3. Unfold the wings (page 36). Turn the CFM Wing
switch Off and leave it (and the Marker Fold switch)
Off during this bleed.
Refer to Figure 151 and Figure 152
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. Reattach the rod ends to the markers.
Figure 151
Tilt Cylinder Location
25419
1
2
Figure 152
Marker Tilt Cylinders
25062
L
R
1
1
2
2
1
2
1
