Great Plains NTA2007 Operator Manual - Manual (Page 114)

110 NTA607 or NTA2007 Table of Contents Index Great Plains Manufacturing, Inc.
166-372M Table of Contents Index 2012-01-05
Maintenance Lift Lock
Crush and Pinch Hazards; Equipment Damage Risk:
Do not rely on hydraulics to hold the implement at lift. Use the
maintenance lift locks provided. Unlocked lift cylinders settle
over time. Implement sections can crush anyone working
under them. Implement links can pinch or crush anyone
working near them.
Do not rely on the transport lift lock to hold the wings at
raised. Use the gauge wheel lock channels provided. Unlocked
gauge wheel cylinders settle over time. Outer wing openers
can crush anyone working under them. Openers at wing gaps
can pinch anyone working between them. Opener damage is
also possible.
Locks, including gauge wheel cylinder locks, are
provided to hold all implement sections at raised for
maintenance, and for raised unfolded storage. The
gauge wheel lock channels are not used in routine
operations (field or transport).
Steps to engage maintenance lift lock presume a starting
configuration of implement unfolded and lowered:
1. Raise the unfolded implement.
Refer to Figure 88
2.
Install the gauge wheel lock channels. Remove the
channels
from the wing lugs and pin to cylinder
rods .
Refer to Figure 89
3.
With the implement still fully raised, begin a fold
operation (page 37) just
long;}~ }w~0w vgou w v{w2centre loc
k cylinder to
extend and engage the centre lock lug .
4. Lower the implement.
Maintenance Lift Unlock
1. Raise the implement.
2. Remove the gauge wheel lock channels. Return
them to storage.
3. To lower, Perform an unfold operation (page 36) just
long enough to disengage the centre lock.
To fold, leave the centre lock engaged, and complete
a fold operation (page 37).
Figure 88
Maintenance Lock Channel
31415
1
2
3
Figure 89
Centre Lock Engaged
31248
4
5
1 2
3
1
1