An operator is attempting to attach a new quick-coupler bucket to a wheel loader. After aligning the bucket and engaging the coupler, the operator engages the quick-coupler lock pins. However, the indicator lights show that only one pin has fully engaged, and the other remains partially retracted. What should the operator do next?

Question: An operator is attempting to attach a new quick-coupler bucket to a wheel loader. After aligning the bucket and engaging the coupler, the operator engages the quick-coupler lock pins. However, the indicator lights show that only one pin has fully engaged, and the other remains partially retracted. What should the operator do next?

Answer options: ✅ Disengage the quick-coupler, reposition the bucket slightly, and attempt to re-engage the pins.

• Forcefully drive the loader forward and backward to 'seat' the unengaged pin.
• Continue operating the loader with the partially engaged bucket, but avoid heavy loads.
• Bypass the quick-coupler safety system to manually extend the pin.

Correct answer: Disengage the quick-coupler, reposition the bucket slightly, and attempt to re-engage the pins.

Explanation: If a quick-coupler pin does not fully engage, it indicates improper alignment or a potential malfunction. The safest action is to disengage the coupler, reposition the attachment, and reattempt the connection to ensure both pins are securely locked. Forcing the loader, continuing operation with a partially engaged attachment, or bypassing safety systems are extremely dangerous and can lead to the attachment detaching, causing injury or damage.