Great-plains NTA2007HD Operator Manual User Manual download pdf (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

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Great-plains NTA2007HD Operator Manual User Manual Page 40