An operator is using an excavator with a standard bucket for digging. The original equipment manufacturer (OEM) specifies a maximum lifting capacity at a certain reach. If the operator decides to replace the standard bucket with a heavier, specialized grading bucket for a precise finishing task, how would this affect the maximum lifting capacity at the same reach?

Question: An operator is using an excavator with a standard bucket for digging. The original equipment manufacturer (OEM) specifies a maximum lifting capacity at a certain reach. If the operator decides to replace the standard bucket with a heavier, specialized grading bucket for a precise finishing task, how would this affect the maximum lifting capacity at the same reach?

Answer options: ✅ The maximum lifting capacity would decrease.

• The maximum lifting capacity would increase.
• The maximum lifting capacity would remain unchanged.
• The boom control lever would become harder to move.

Correct answer: The maximum lifting capacity would decrease.

Explanation: Replacing a standard bucket with a heavier specialized grading bucket adds more weight to the end of the boom. This increased weight reduces the machine's effective maximum lifting capacity at any given reach, as the excavator's stability and hydraulic power limits are based on the total load, including the attachment's weight. The boom control lever operation is not directly affected by the attachment's weight.