When loading a tandem dump truck with sand, the excavator operator observes that the material is wet and sticky, causing it to build up in the bucket. What is the most effective technique to handle this material and maintain efficient loading?

Question: When loading a tandem dump truck with sand, the excavator operator observes that the material is wet and sticky, causing it to build up in the bucket. What is the most effective technique to handle this material and maintain efficient loading?

Answer options:

• Increase the bucket curl angle to hold more material.
• Perform quick, jerky movements to shake the material loose.
• Overload the bucket slightly to force the material out. ✅ Cycle the bucket vigorously, using the boom and stick to 'rap' the bucket and dislodge material.

Correct answer: Cycle the bucket vigorously, using the boom and stick to 'rap' the bucket and dislodge material.

Explanation: When handling sticky material, a common and effective technique is to vigorously cycle the bucket, using the boom and stick to 'rap' or shake the bucket against the machine's limits to dislodge the material. This helps to prevent buildup and maintains efficiency. Increasing the curl angle might hold more but won't dislodge sticky material; jerky movements or overloading can be unsafe and ineffective.