Liebherr a924 litronic wheel excavator service repair manual sn:6001 and up

Page 19

Safety Information

Service Manual

Avoidance of crushing and burns – Protective goggles, safety helmets, safety shoes and gloves, reflective vests and ear protection etc. are required for specific jobs. – Ensure that you obtain information on any special safety regulations for the job site from the site foreman. – Always tilt up the safety lever before leaving the operator’s seat. – When getting in and out, do not hold on to the steering column, control panel or joystick. Doing this could cause unintentional movement, which could result in an accident. – Never jump from the machine; use the steps, ladders, gangplanks and supporting straps provided for this purpose. – Use both hands to hold tight and have your face turned towards the machine. – Familiarize yourself with the location of the emergency exit through the front window. – In the absence of any other instructions, proceed as follows for all maintenance and repair work: – switch off the machine on firm, level ground and anchor the grab in the ground. – place all operating levers into neutral and tilt the safety lever up. – switch off the engine and remove the start key. – Before touching any parts of the hydraulic circuits, you must also operate all pilot control devices (joystick and pedals) in all directions with the start key in contact position in order to reduce the actuating and dynamic pressures in the work circuits. You must then reduce the internal tank pressure as described in these operating instructions. – Secure all loose parts on the machine. – Never operate a machine before carrying out a careful inspection tour and checking whether any warning signs are missing or illegible. – Do not carry out any modifications, alterations or conversions to the machine which may affect safety without the express permission of the manufacturer. This also applies for the installation of safety devices and valves and for welding work on load-bearing parts.

1.3

Avoidance of crushing and burns – – – – – – – – – – – –

1.10. 2

Do not work beneath the equipment if it is not safely positioned on the ground or supported. Do not use any damaged or insufficient load-bearing take-up materials, such as ropes or chains. Wear work gloves when working with wire cables. When working on the equipment, never use your fingers to locate bores; use the correct punch for the procedure. Ensure that no objects enter the fan when the engine is on. The fan will eject or destroy these objects and will itself be damaged. The engine cooling system is hot and pressurized when near operating temperature. Avoid coming into contact with coolant carrying parts. There is a risk of sustaining burns. Only check the coolant when the sealing cap of the expansion container has cooled to a point where it is possible to touch it. Then turn the cap carefully to let off the overpressure. Engine and hydraulic oil are hot when near operating temperature. Avoid coming into contact with hot oil or oil-bearing parts. Wear protective goggles and gloves when working on the battery. Avoid sparks and naked flames. Never permit the grab to be guided by hand by auxiliary personnel. When reaching into the engine compartment, always secure the side doors against unintentional closing by positioning the supports provided for this purpose. Never lay under the machine if it is raised with work equipment and has not been correctly and securely supported with hardwood beams.

LIEBHERR


Issuu converts static files into: digital portfolios, online yearbooks, online catalogs, digital photo albums and more. Sign up and create your flipbook.