Great Plains NTA3007HD Operator Manual - Manual (Page 117)

Maintenance and Lubrication 113
04/04/2011 166-207M
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 piv-
oting plates. See “Folding the Air Drill” on page 34.
1. Review safety advisories and operational advice on
page 112, and on this page, before performing
bleed.
Refer to Figure 114
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 115
4.
Un-pin cylinder rod ends. Support rod ends so that
they cannot strike drill parts, or ground, during exten-
sion.
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 fit-
ting. 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 fit-
ting. 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.
Null4:
Figure 114
CFM Tilt Enable for Bleed
29380
Null4:
Figure 115
Tilt Bleed Points
29476
2
1
2 1
1
2
1 2