Great Plains YP4025F-1670 Operator Manual - Manual (Page 101)

Great Plains Manufacturing, Inc. Table of Contents Index Maintenance and Lubrication 97
2014-09-08 Table of Contents Index 401-571M
Fold Cylinder Bleeding
Refer to Figure 122
1. Begin with planter raised and lift cylinder locks
installed.
2. Un-pin cylinder rod ends. Orient cylinders so that rod
ends may extend without striking planter parts.
3. Loosen the JIC fittings , at the base end of all
cylinders.
4. Extend the circuit until fluid appears at the loosened
fittings. Set circuit to Neutral and secure fittings.
5. Loosen the JIC fittings , at the rod end of all fold
cylinders.
6. Retract the circuit until fluid appears at all fittings. Set
circuit to neutral and secure fittings.
7. Extend cylinders and re-pin cylinder rod ends.
Marker Cylinder Bleeding
Refer to Figure 123
1. Begin with planter unfolded and lowered, and with
both marker sides extended. See “Unusual Marker
Operations” on page 41.
2. Note the position of the gravity pin lock (above and
latched on rod-end pin when folded, hanging down
when unfolded).
3. Un-pin the rod end of the marker cylinders, and
orient the cylinders so that the rods may extend
without striking marker components.
4. Loosen the JIC fitting at the base end of one
marker cylinder.
5. Extend the circuit until fluid appears at the loosened
fittings. It may be necessary to extend-retract-extend
to cycle the sequence valve to that marker. Set
circuit to Neutral. Secure fittings.
6. Loosen the JIC fitting at the rod end of that same
marker cylinder.
7. Retract the circuit until fluid appears at the loosened
fittings. Set circuit to Neutral. Secure fittings.
8. Repeat for the other side.
9. Re-orient gravity pin lock to position noted at step 2.
10. Re-pin marker rod ends.
Figure 122
Fold Bleed 29221
3
1
2
4
1
3
2
4
1 2
3 4
Figure 123
Marker Bleed
26131
2
1
1
2
1
2