Great Plains NP4000 40-foot Operator Manual - Manual (Page 36)

32 NP4000 Table of Contents Index Great Plains Manufacturing, Inc.
407-776M Table of Contents Index 2012-03-28
Inner Wing Lock Channels
Inner Locks in Transport
Refer to Figure 17
These manual-reset lock channels (
and ) are
permanently installed on the inner wing fold cylinder
clevises. These locks (and the outer wing locks) provide
stops limiting fold during lift for field turns.
The rear cylinder lock , equipped with a spring plunger,
also has a separate use during initial unfold, where it
limits inner wing travel to eliminate risk of opener
damage.
During pre-fold, transport and wings-folded storage, both
lock channels are retained by a pin
in a holder .
Inner Locks During Unfold
Refer to Figure 18
1.
Withdraw the pin , releasing at least the
spring-plunger lock channel .
2. Swing the spring plunger toward implement
center, over the stroke control valve , and rest the
spring-load bolt on the cylinder body.
3. Rest the standard lock channel on the front
cylinder face.
Inner Wing Locks After Unfold
Refer to Figure 19
During the initial unfold, the spring-plunger
aligns with
the cylinder axis. The spring-loaded bolt engages an
actuator on the stroke control valve, stopping inner wing
motion slightly above wings-level.
Figure 17
Inner Wing Locks: Transport
34107
3
1
4
2
1 2
2
3 4
Figure 18
Inner Wing Locks: Pre-Unfold
34108
2
3
6
5
3
2
5
6
1
Figure 19
Inner Wing Locks: Initial Unfold
34104
5
5