When checking a trencher boom, which of the following should also be monitored along with loose bolts and worn teeth?

Monitoring tension on the chain is essential when checking a trencher boom because proper chain tension is critical for the efficient functioning of the trencher. If the chain is too loose, it can leads to slippage, increased wear on the components, and ultimately affect the performance of the trencher. Conversely, if the chain is too tight, it can impose excessive strain on the drive mechanism and lead to premature failure of components. Therefore, ensuring the correct tension helps in maintaining operational efficiency, safety, and longevity of the equipment.

Other factors, like oil leakage, hydraulic fluid levels, and engine temperature, while important for overall equipment health and operation, do not directly relate to the specific mechanical integrity of the trencher boom and its immediate functionality during operation. Monitoring tension on the chain is focused more on the mechanical engagement necessary for the boom to perform effectively.