Great Plains NTA3007 Operator Manual - Manual (Page 41)

Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 37
2012-07-02 Table of Contents Index 166-371M
Unfold: Unfold Wings
Drill check, un-hook and tractor setup (step 1 through
step 10 starting on page 45) must be completed before
performing the next steps.
Refer to Figure 24
11. On the CFM switch, enabled unfolding with MASTER
and Fold set on.
Crushing Hazard:
Clear everyone from around the drill and tractor. The drill or
the tractor, or both, must move during unfold.
12. Unfold the wings (now tilted down) by retracting the
fold cylinders.
Refer to Figure 25 (depicting an unfold with both tractor and
drill free to move - notice how the length of the drill shortens,
and that it has pulled the tractor toward the drill)
Observe the unfolding. It is not complete until the tongue
lock at the hitch engages the roller on the telescoping
centre tongue tube.
Machine Damage Risk:
Do not tilt down or lower openers while any drill folding
operations are under way or partially complete.
Refer to Figure 26
13. Continue unfolding until tongue lock hook engages
roller on telescoping tongue tube. it may be
necessary to back up the tractor for full engagement.
Machine Damage Risk:
Do not operate drill when unfolded unless tongue lock is
engaged.
Figure 24
CFM Unfold Enable
29380
Unfold Wings: Hydraulic Circuit Operation
Lift
Fan,
Auger
Fold, Tilt,
Marker
Transport
Hooks
Neutral Neutral Retract Neutral
Figure 25
Wing Unfold Progression
32409
32408
32407
Figure 26
Tongue Hook Engaged
29393