Great Plains NTA3007 Operator Manual - Manual (Page 134)

130 NTA907 or NTA3007 Table of Contents Index Great Plains Manufacturing, Inc.
166-371M Table of Contents Index 2012-07-02
Bleeding Fold Hydraulics
If the systems have sufficient fluid for safe operation,
prior to bleeding, perform unfold (page 34), tilt down
(page 39) and lower (page 42) operations.
1. Review safety advisories and operational advice on
page 128, and on this page, before performing
bleed.
Refer to Figure 125
2.
With drill unfolded and monitor power on, leave
MASTER and Wing Fold ON, and set hydraulic
circuit to Float to relieve pressure in lines.
Refer to Figure 126
3.
Un-pin three cylinder rod ends. Orient cylinders so
that rod ends may extend without striking drill parts.
4. Fully retract cylinders. Set circuit to Neutral.
5. Loosen the JIC fittings at the base end of both fold
cylinders, and at the base end of the tongue latch
cylinder
.
6. Slowly extend the circuit until fluid appears at a
loosened fittings. Set circuit to Neutral and secure
fittings. Repeat until all three fittings are secured.
7. Fully extend cylinders. Set circuit to Neutral.
8. Loosen the JIC fittings at the rod end of both fold
cylinders, and at the rod end of the tongue latch
cylinder
.
9. Slowly retract the circuit until fluid appears at a
fitting. Set circuit to Neutral and secure fitting.
Repeat until all three fittings are secured.
10. Use tractor circuit to re-position rod ends and re-pin.
Bleeding Hook Hydraulics
Drill must be at least partially unfolded for this bleed, so
that wings are not supported on transport hooks.
1. Review safety advisories and operational advice on
page 128, and on this page, before performing
bleed.
Refer to Figure 127
2.
Fully retract hook cylinder. Set hook circuit to
Neutral. Loosen base end JIC fitting
.
3. Slowly Extend circuit until fluid appears at cracked
fitting. Set circuit to Neutral and secure fitting.
4. Fully Extend hook circuit. Set circuit to Neutral.
Loosen rod end JIC fitting
.
5. Slowly Extend circuit until fluid appears at cracked
fitting. Set circuit to Neutral and secure fitting.
Figure 125
CFM Fold Enable for Bleed
29380
Figure 126
Fold Bleed Points
29466
3
3
4
4
5
6
3
5
4
6
Figure 127
Hook Bleed Points
29466
8
7
8
7