
2019-03-08
196-359M
3N-4010F, 3N-4010HDF, and 3N-4020F
Operating Instructions
24
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 unfolding
drill.
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.
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 18 and 19 on page 22
3. Raise the drill. Remove lock channels from all six
wheel cylinders. Store lock channels.
4. Activate fold hydraulics and slowly unfold the drill
until wings are fully unfolded and all spring loaded
locks have snapped into position.
5. Lower drill.
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 23
Unfold: Drive/Lock Selector Valve
21844
Figure 24
Transport/Tool Bar Lock Cylinders
21841
21845
Figure 25
Caster Lock Cylinder
21842