360 Excavator Practice Review Exam Test.

360 Excavator Practice Review Exam Test. If the operator has loaded the machine onto a transporter/trailer on behalf of a driver, what checks must be carried out before they leave the cab? - CORRECT ANSWER A. Position the machine in an agreed position B. Lower the attachment and release hydraulic pressure C. Close/lock all windows/doors and remove the key Why should different soils be segregated during excavating? - CORRECT ANSWER For reuse on or off site If setting up to excavate in a confined area, name TWO things that should be taken into account before starting. - CORRECT ANSWER A. Exit and entry B. Proximity hazards - people nearby, cables etc. C. Capability to achieve specifications Before manually changing any bucket: A. Where should the bucket be positioned (in relation to the ground) before removing the final pin B. Explain why - CORRECT ANSWER A. Touching the ground B. To prevent injuries If both levers (or travel pedal for wheeled machines) are pushed forwards when the track motors (or driving wheels) in front of the cab, in which direction would the machine move? - CORRECT ANSWER Backwards During work, the engine starts to overheat. Explain the danger if someone tries to remove the radiator or expansion tank cap. - CORRECT ANSWER Hot fluid under pressure can escape uncontrollably causing severe burns. Give FOUR reasons that may cause the machine to tip over - forwards and/or sideways - CORRECT ANSWER 1. Soft ground 2. Too heavy a load 3. Working over the tracks 4. Slopes undercutting 5. Overextending Explain the purpose of a lift plan. - CORRECT ANSWER Is a document that describes how a lifting task is carried out safely and the resources that are to be used When must a banksman/signaller be used before moving an excavator? - CORRECT ANSWER Whenever the operator cannot see in the intended direction of travel What needs to be inspected on a quick-hitch coupler, when attaching lifting accessories to lift slung loads? - CORRECT ANSWER 1. Safe working load 2. Approved for lifting 3. Security of pins 4. Damage to the lifting eye (attachment point) What is the definition of, or how can a hazard be described? - CORRECT ANSWER A hazard is a situation where there is a potential risk to health, environment, life and property Before lowering into or moving a drag box into a trench, what trench-related checks must be made? - CORRECT ANSWER Clear the trench of personnel/equipment Explain all visual checks that must be carried out on all types of quick hitch bucket attaching systems before use. - CORRECT ANSWER 1. Damage to the coupler attachment - hoses 2. All parts available fitted correctly 3. Any safety device fitted is working 4. All pins are located correctly locked and secured Where should the excavator's operator's manual be kept and why? - CORRECT ANSWER A. In the cab B. For easy access Why must excavator Operators not begin to load vehicles until the forward tipping dumper driver is clear of their machine? - CORRECT ANSWER To avoid hitting the driver with the machine /load Describe a physical method of checking that a bucket is fully secured to the quick hitch coupler prior to work. - CORRECT ANSWER A. Raise the attachment and rotate fully back and forth B. Place on the ground and attempt to unhook it If the excavator is carrying out deep excavating work using the full working range, what hazard may occur? - CORRECT ANSWER Undercutting the machine Using the lifting capacity diagram for a59 : A. If the machine is equipped with a 2,5m long dipper, what is the maximum lifting capacity in tonnes at a 6m radius/reach over the sides of the track with the load at 3m height? B. In principle, if a longer dipper is fitted, what effect does that have on the lifting capacity (assuming same size bucket and machine configuration)? - CORRECT ANSWER A. 2250 B. Reduced