Great Plains 3N-4025P Operator Manual - Manual (Page 32)

28 3N-40P Table of Contents Index Great Plains Manufacturing, Inc.
196-538M Table of Contents Index 2014-01-29
Unfolding the Drill
Machine Damage Risk:
Unfold only when the drill is raised and locked up.
Unfold the drill on level ground with the tractor
transmission in neutral.
Crushing, Pinch-Point and Overhead Hazards. To prevent
serious injury or death:
▲ Always use transport locks when drill is folded.
▲ Fold only if hydraulics are bled free of air and fully charged
with hydraulic oil.
▲ Stay away from frame sections when they are being raised
or lowered.
▲ Keep away and keep others away when unfoldingdrill.
Note: When unfolding, operate the lock circuit exactly in
reverse of folding. Operate the circuit once
(Extend/Neutral). Remember that when the
cylinders move, they release one lock, and enable
six others, stopping in a “ready to unfold” position.
As the drill is unfolded, the six spring loaded locks
snap shut, locking the drill.
Refer to Figure 29
1.
Check selector valve set to Locks.
2. Extend the Lock cylinder circuit lever to:
• disengage the self-latching transport lock,
• enable two tool bar locks,
• enable two swivel locks, and
• enable two caster locks.
Set circuit to Neutral. Do not Retract.
Refer to Figure 23 and 25 on page 25
3.
Raise the drill. Remove lock channels from all six
wheel cylinders. Store lock channels.
4. Activate fold hydraulics and slowly unfold the until
wings are fully unfolded and all spring loaded locks
have snapped into position.
5. Lower the drill.
Refer to Figure 29
6.
Move selector valve handle from Locks to Drive.
Pinch/Crush Risk:
Center section of drill moves forward while unfolding.
Tractor may move backward. Keep all personnel clear of drill
and tractor wheels.
Figure 29
Unfold: Drive/Lock Selector Valve
21844
Figure 30
Transport/Tool Bar Lock Cylinders
21841
21845
Figure 31
Caster Lock Cylinder
21842