LADDER GP 2356940 - Caterpillar

Crush injury. Could cause serious injury or death. Always confirm that the quick coupler is engaged onto the pins. Read the Operator's Manual.
Hold the control lever for the bucket cylinder in the EXTEND position for 5 seconds after the electric switch has been locked.
To verify the engagement of the work tool, perform the following procedure:
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Visually confirm the engagement of the work tool. Ensure that both the work tool front and rear pin locking mechanisms are locked and securing the work tool to the coupler.
Visually confirm positive indication of the ISO Engagement indicator (3), if equipped.
Retract the bucket cylinder and drag the work tool on the ground.
Visually confirm that there is no movement between the work tool and the quick coupler.
Back drag the work tool on the ground to ensure the quick coupler is properly locked.Do Not strike the work tool on the ground to ensure the quick coupler is properly locked. Striking the work tool on the ground will result in damage to the coupler cylinder.
Uncoupling the Work Tool
Place the work tool or bucket in a safe position before disengaging the coupler. Disengaging the coupler will release the work tool or bucket from control of the operator.Serious injury or death may result from disengaging the work tool or bucket when it is in an unstable position or carrying a load.
Auxiliary hoses for work tools must be disconnected before the Hydraulic Quick Coupler is disengaged.Pulling the work tool with the auxiliary hoses could result in damage to the host machine or the work tool.
Always confirm that the buzzer sounds when the switch is in the unlock position. If no sound is heard while in this condition, ensure that the work tool is placed in a stable and safe position. Turn off the engine. Consult your Cat dealer.
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To unlock the coupler, position the work tool so that it is slightly above the ground, with the front pin of the work tool higher than the rear pin of the work tool. If the work tool is a bucket, verify that the cutting edge is slightly higher than the bottom of the bucket.
Move electric switch (1) to the UNLOCK position. Confirm that the buzzer is sounding with an intermittent pattern of one beep per second. If no sound is heard while in this condition, ensure that the work tool is placed in a stable and safe position. Turn off the engine. Consult your Cat dealer.
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Retract the bucket cylinder, ensuring that the work tool rear pin locking mechanism is unlocked. The rear of the quick coupler should be rotated away