Safety and Accident Prevention 2 2.17 Change of work attachments, maintenance, repair Before working on the electrics or when performing arc-welding on the machine, the connection to the battery must be disconnected. Earth-moving machines are only to be converted, maintained or serviced under the guidance of a suitable person designated by the plant operator and following the manufacturer’s Operating Instructions. When disconnecting the battery, first the negative pole then the positive pole must be disconnected. The battery must be re-connected in reverse order.
After every change of work attachments, the driver must convince himself that the quick-attach system is correctly fastened and locked. During repair work around the battery, it must be covered with insulating material. Tools should never be placed on or near the battery. Work on e. g. Protective devices of moving machine parts are only to be opened or removed after the drive has been switched off and cannot be switched on again by unauthorized persons. Protective devices are e. g. engine/motor covers, doors, protective grating, trim.
braking, steering, hydraulic and electric systems Upon completion of assembly, maintenance or repair work, all protective devices must once more be attached in the proper manner. of the machine is only to be carried out by expert personnel specially trained in these areas. Load-bearing parts of earth-moving machines are only to be welded following consultation with the manufacturer and in accordance with recognized welding principles. Stability must be ensured during all type of work on the machine at all times. The machine must be suitably secured by chocks so that it cannot roll away whenever work is performed, particularly under the machine.
Protective structures (ROPS, FOPS) are not to be welded or drilled in any way. The work equipment must be secured against movement by lowering it to the ground or equivalent measures, e.g. cylinder supports, trestles. As long as the engine is running, the unprotected working and articulation range must not be entered. Before commencing work on the hydraulic system, the operating pressure, pilot pressure, back pressure and pressure inside the tank must be let off. Swallowing lubricants as well as long and repeated skin contact can be hazardous to health and should therefore be avoided. When used properly, there is no particular danger to health.
The safety specification sheets from the mineral companies must be observed. When jacking up earth-moving machines, jacking devices must be positioned so that they cannot slip. Jacks must be positioned and applied absolutely straight, without tilting. Raised earth-moving machines must be supported by suitable structures such as crosswise stacks of planks, square timbers or steel trusses. Only the hoses specified by the manufacturer may be used. Earth-moving machines which are raised with work equipment must be stabilized by a supporting structure immediately after lifting. Work under raised machines which are only supported by their hydraulics is forbidden.
Hydraulic hoses must be routed and assembled by expert personnel. In the vicinity of fuel or batteries, smoking and naked flames are prohibited. The engine/motor(s) must be turned off prior to all maintenance and repair work. These requirements may only be ignored in the case of maintenance or repair work which cannot be performed without the engine/motor(s) running. When performing maintenance and repair work on the hydraulic system, the hydraulic system must be relieved of pressure. With the engine turned off, lower the work equipment to the ground and actuate all hydraulic control levers until there is no more pressure in the hydraulic system.
19/112 TL160 Operating Manual 12.9.08 Version 1.0