Great Plains
| 166-207M | 02/26/2019
112
NTA907HD and NTA3007HD
Maintenance and Lubrication
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 “
1.
Review safety advisories and operational advice on
page 111, and on this page, before performing bleed.
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.
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.
Bleeding Fold Hydraulics
If the systems have sufficient fluid for safe operation, prior
to bleeding, perform unfold (page 25), tilt down (page 28)
and lower (page 32) operations.
1.
Review safety advisories and operational advice on
page 111, and on this page, before performing bleed.
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.
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 112
CFM Tilt Enable for Bleed
29380
Figure 113
Tilt Bleed Points
29476
1
2
Figure 114
CFM Fold Enable for Bleed
29380
Содержание NTA3007HD
Страница 2: ...Great Plains 166 207M 02 26 2019 Table of Contents Index ii 166 207M Table of Contents Index ...
Страница 4: ...2SF24 and 2SF30 ...
Страница 177: ...Table of Contents Index Table of Contents Index ...
Страница 178: ...Great Plains Mfg 1525 E North St P O Box 5060 Salina KS 67402 Table of Contents Index ...