Great Plains NTA2007HD Operator Manual - Manual (Page 40)

36 Great Plains Manufacturing, Inc. Contents Index NTA607/2007HD
166-283M Contents Index 04/04/2011
Lowering
Refer to Figure 26
1.
Check that maintenance lock channels are not
installed on gauge wheel lift cylinders.
2. Check that center section lift lock is disengaged. If
not:
3. Unfold drill before lowering (page 30).
4. Make sure all persons are clear of opener sections.
Refer to Figure 27
5.
Activate dedicated lift circuit (normally Retract).
Falling Hazard:
Do not stand on tires when implement is lowered. Wing gauge
wheels, caster wheels, and seed cart wheels, may have little or
no weight on them, and may turn suddenly and without warn-
ing if used as a step, resulting in serious injury.
Null4:
• If lock cylinder is extended, check that the fan
shut-off valve is closed (page 31), then perform a
brief unfold operation (Extend the Fold/Fan circuit)
to retract the lock cylinder.
• If the lock cylinder will not retract, perform a brief
Lift operation (Extend the Lift circuit) to free the
pawl. If this fails to disengage the lock, see “Lift
Lock Troubleshooting” on page 100.
Null4:
Figure 26
Lift Lock Disengaged
31249
Null4:
Figure 27
Implement Raised / Lowered
31146