Worldwide Construction And Forestry Division 380GLC Operator's Manual page 115

NOTE: The hydraulic coupler must be held over relief to
lock or unlock the hydraulic coupler cylinder.
2. Rotate to full curl position. Press LOCK button on
hydraulic coupler control box. Hold in full curl position
for 5 seconds.
3. Slowly uncurl hydraulic coupler. Visually verify
supplemental lock contacts locking plate. Visually
verify that lock plate is behind attachment pin.
IMPORTANT: Prevent possible damage to the
hydraulic coupler. Do not operate attachment
when the supplemental lock is used as the
primary locking device. Doing so could result
in hydraulic coupler malfunction.
4. Continue to slowly uncurl hydraulic coupler. Verify that
attachment is properly locked.
Reset Lock Controller
CAUTION: Avoid personal injury. Prevent
injury from hydraulic coupler movement. Keep
bystanders clear of machine.
The safety buzzer will sound if an error occurs with the
hydraulic coupler control box circuit.
1. Lower attachment to ground.
2. Turn key switch to OFF position.
Operation—Operating the Machine
3. Press and hold LOCK and UNLOCK buttons on
hydraulic coupler control box.
4. Turn key switch to ON position.
5. Continue to press and hold LOCK and UNLOCK
buttons for 20 seconds.
6. Safety buzzer and hydraulic coupler control box lights
will cycle on and off.
7. After safety buzzer stops, release LOCK and UNLOCK
buttons. Resume normal operation. If safety buzzer
will not turn off, contact an authorized John Deere
dealer.
2-3-14
Bucket Rotated to Full Curl Position
OUT4001,0000866 -19-26JUL21-2/2
092221
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