Do not attempt to loosen fittings in pressurized lines or while hydraulic
pumps are in operation.
Ensure that all hydraulic systems are shut down and the pressure is
If it should become necessary to perform electrical maintenance on live or
hot circuits, remove all rings, watches, and other jewelry before
performing maintenance as serious burns result from accidental
grounding or shorting circuits.
Ensure the batteries are disconnected
maintenance on an electrical circuit.