Using the operator’s manual, state the figure for setting track tension. For wheeled units, state the tyres’ operating pressure. Note: The operator’s manual for the machine being used for the test MUST be available for reference by the candidate. 76 Give TWO reasons why, wherever possible, operators should excavate the ground in layers. 77 What is regarded as the danger or hazard zone during a lifting operation? 78 What particular and specific hazards can affect the stability of the machine when working on old industrial (brownfield) sites? 79 If the load inadvertently or accidentally lands, what course of action should be taken? 80 What needs to be inspected on a quick-hitch coupler when attaching lifting accessories to lift 81 slung loads? During work, the engine starts to overheat. Explain the danger if someone tries to remove the radiator or expansion tank cap. 82 List SIX typical subject areas that should be covered in a site induction. 83 On both tracked and wheeled types: a) what differs between lifting over the side compared to over the front or the rear of the 84 machine? b) Explain why. Before manually changing any bucket: a) Where should the bucket be positioned (in relation to the ground) before removing the final 85 pin and b) explain why? Where should the excavator’s operator’s manual be kept and why? 86 The operator is asked to excavate a new trench. State FIVE different requirements that must be considered or implemented before work commences. 87
76 Using the operator’s manual, state the figure for setting track tension. For wheeled units, state the tyres’ operating pressure. Note: The operator’s manual for the machine being used for the test MUST be available for reference by the candidate. 77 Give TWO reasons why, wherever possible, operators should excavate the ground in layers. 78 What is regarded as the danger or hazard zone during a lifting operation? 79 What particular and specific hazards can affect the stability of the machine when working on old industrial (brownfield) sites? 80 If the load inadvertently or accidentally lands, what course of action should be taken? 81 What needs to be inspected on a quick-hitch coupler when attaching lifting accessories to lift slung loads? 82 During work, the engine starts to overheat. Explain the danger if someone tries to remove the radiator or expansion tank cap. 83 List SIX typical subject areas that should be covered in a site induction. 84 On both tracked and wheeled types: a) what differs between lifting over the side compared to over the front or the rear of the machine? b) Explain why. 85 Before manually changing any bucket: a) Where should the bucket be positioned (in relation to the ground) before removing the final pin and b) explain why? 86 Where should the excavator’s operator’s manual be kept and why? 87 The operator is asked to excavate a new trench. State FIVE different requirements that must be considered or implemented before work commences.
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