I have also heard of fan blades coming off and being thrown a good distance. They could kill someone. Plan the harvest so that the fan discharge on sweepers and harvesters is away from the road. Even the dust could cause an accident. Before dismounting from a hydrostatic unit, be sure the brakes are set and the engine is off or manual transmission is in neutral.
Hydrostatic units can start moving on their own.
Replace worn or torn rubber guards. Prune and pistachio harvesters. It is essential for the shaker and receiver operators and the bin handler to be in contact with and watch out for each other. No one should get between the left rear tire and pan of the receiver. If a person has to go there, the operator should have the machine securely stopped and keep hands and feet away from the controls.