When telescoping the boom section of a rough terrain crane, which section should be telescoped first?

When telescoping the boom section of a rough terrain crane, the most effective approach is to telescope all sections equally. This method ensures that the boom maintains its structural integrity and stability during the extension process. By extending all sections at the same rate, the crane achieves a balanced distribution of weight and forces along the boom. This is particularly important in rough terrain applications, where stability is crucial for safe operation.

Telescope sections unevenly, such as extending only the top section or a middle section first, can lead to an uneven load distribution and an increased risk of instability or even tipping. Doing so may also stress specific parts of the boom more than intended, potentially leading to mechanical failure. Therefore, extending all sections equally is the best practice for maintaining the safety and operational efficiency of the crane.