Unfolding, Unfold: disengage wing locks – Great Plains NTA2007 Operator Manual User Manual
Page 40
36
NTA607 or NTA2007
Great Plains Manufacturing, Inc.
166-372M
2012-01-05
Unfolding
These steps presume a drill raised and folded for
transport, such as at initial delivery. Follow the detailed
instructions in step 1 through step 6, beginning on this
page, until this is a familiar operation.
1.
Move the drill to level ground with adequate
overhead and lateral clearances for the fold
operation.
Unfold: Retract Fold Cylinders (page 37)
2.
Press “Fold Enable” softkey (if displayed).
Refer to Figure 21
3.
Retract the fold circuit to lift wings off wing fold lock
bars. Set circuit lever to Neutral (not Float) to hold
wings off lock bars
.
Unfold: Disengage Wing Locks
4.
At each wing, rotate the orange spring locking
handle
(top forward) until the locking bar
is
raised to and held at vertical.
Unfold: Fully Raise Drill (page 41)
Note: Gauge wheel cylinder locks are provided for
maintenance, but are not used in typical storage or
transport. Normally, they are not installed at this
time, and do not need to be removed for lowering.
Refer to Figure 22
5.
Extend the Lift circuit to:
5a. deploy the wing gauge wheels, and
5b. lift the implement frame slightly at the lock.
Hold the circuit at Extend for a few seconds after the
gauge wheels are fully deployed.
Equipment Damage Risk:
Raise before unfolding. If this operation is not performed, the
wing openers contact the ground, drag, and may be damaged.
The centre section lift lock may also fail to release during
unfold.
Unfolding: Unfold Wings (page 35)
6.
Unfold the wings by extending the fold cylinders.
Note: One wing may reach the ground before the other. It
is not uncommon for the folding to be slightly
non-symmetrical.
Refer to Figure 23
Hold the circuit at extended for several seconds after the
gauge wheels contact the ground, to ensure that the
centre lock cylinder activates and disengages the lift
lock. Set circuit to Float or Neutral.
Figure 21
Disengage Wing Lock
32458
32460
2
3
2
3
2
Figure 22
Deploy (Lower) Gauge Wheels
31145
3
2
Figure 23
Wing Unfold Progression
31142