When will the caution "MM EXCEED" illuminate on the Caution and Advisory Display?

• A. When temperatures soar
• B. When oil pressure drops
• C. When the mast moment exceeds 77%
• D. When RPMs are too high

Answer: (C)

The illumination of the "MM EXCEED" caution on the Caution and Advisory Display specifically indicates that the mast moment exceeds a critical threshold, which in this case is set at 77%. The mast moment is a measure of the forces acting on the lifting system, particularly concerning the stress that the mast is undergoing as it lifts or supports loads. When this value goes beyond 77%, it implies that the system may be operating in a potentially unsafe condition, indicating that it could lead to structural failure or loss of control. Recognizing this warning is essential for ensuring safe operation and preventing accidents.

The focus on mast moment emphasizes the importance of understanding load limits and operational safety protocols in lifting systems, as exceeding these limits can have serious ramifications.