What is the correct way to check the tension of the lifting chain for a stacker?

The correct approach for checking the tension of the lifting chain for a stacker involves raising the shuttle a certain distance, in this case, 15 cm, and then assessing the tightness of the chain. This method allows the operator to observe how the chain behaves under load and check for any slack or excessive tension. By lifting the shuttle, you simulate the operational conditions of the stacker, providing a more accurate measurement of the chain's tension.

Monitoring chain tension is crucial for ensuring the safe and efficient operation of the lift truck. An optimal tension helps prevent wear and tear on the chain and related components while also minimizing the risk of accidental drops that could occur if the chains are too loose.

Other options suggest methods that would not yield accurate results. For instance, leaving the chains on the ground or inspecting them without lifting the shuttle would not provide the necessary conditions to assess their tension accurately. Similarly, using a measuring tool while the chains are tight without raising the shuttle does not mimic operational conditions, which could lead to a false reading of tension levels.