Great Plains YP4025A Operator Manual - Manual (Page 113)

Great Plains Manufacturing, Inc. Table of Contents Index Maintenance and Lubrication 109
2013-04-24 Table of Contents Index 401-627M
Lift Cylinder Bleeding
Refer to Figure 132
1.
Unfold and lower planter.
2. Un-pin rod ends of all lift cylinders. Position cylinders
so that rod ends may extend without striking
machine parts.
3. Loosen the JIC fittings at the base end of each
master lift cylinder.
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 base end of each
slave lift cylinder.
6. Extend the circuit until fluid appears at the loosened
fittings. Set circuit to Neutral and secure fittings.
7. Re-pin rod ends.
Fold Cylinder Bleeding
Refer to Figure 133
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.
Figure 132
Lift Bleed
25227
1
2
1
2
1
2
Figure 133
Fold Bleed 29808
3
1
2
4
1
3
2
4
1 2
3 4