Great Plains NTA3007 Operator Manual - Manual (Page 133)

Great Plains Manufacturing, Inc. Table of Contents Index Maintenance and Lubrication 129
2012-07-02 Table of Contents Index 166-371M
Bleeding Tilt Hydraulics
This bleed is most conveniently performed with the drill
fully folded into transport configuration.
If bled while tilted up, all four (4) transport locks must be
in ROAD position, and pins must be engaged behind
pivoting plates. See “Folding the Drill” on page 44.
1. Review safety advisories and operational advice on
page 128, and on this page, before performing
bleed.
Refer to Figure 123
2.
Set transport locks to ROAD.
Set FTM MASTER and Tilt switches on.
Tilt wings up.
Set circuit to Neutral.
3. Verify that transport locks have engaged.
Set circuit to Float to relieve pressure in lines, and
tension at cylinder rod ends.
Refer to Figure 124
4.
Un-pin cylinder rod ends. Support rod ends so that
they cannot strike drill parts, or ground, during
extension.
5. Fully retract circuit.
Set circuit to Neutral.
6. Carefully loosen JIC fittings at cylinder rod ends.
7. Slowly retract circuit again, watching for fluid at each
cracked fitting.
8. As fluid appears, set circuit to Neutral and secure
fitting. Retract again. Repeat until all four rod ends
are secured.
9. Fully Extend tilt cylinders.
Set circuit to Neutral.
10. Carefully loosen JIC fittings at cylinder base ends.
11. Slowly extend circuit again, watching for fluid at each
cracked fitting.
12. As fluid appears, set circuit to Neutral and secure
fitting. Extend again. Repeat until all four rod ends
are secured.
13. Use tractor circuit to re-position rod ends and re-pin.
Crushing Hazard:
Wings must be fully tilted up, with transport locks engaged,
before performing a tilt bleed using this method. Verify that
lock pins are engaged behind pivoting arm weldments before
setting circuit to Float.
Figure 123
CFM Tilt Enable for Bleed
29380
Figure 124
Tilt Bleed Points
29476
2
1
2 1
1
2
1 2
1
2