MAINTENANCE AND SERVICE
General
WARNING!
Most accidents involving machines occur dur- ing trouble shooting, service and maintenance as staff have to locate themselves within the machine’s risk area. Prevent accidents by being alert and by planning and preparing the work.
If service operations or trouble shooting does not require the machine to be switched on, the power cable must be removed and positioned so that it cannot be connected by mistake.
If servicing operations require the motor to be in operation, be aware of risks when working with or in the vicinity of moving parts.
Perform maintenance and servicing in accordance with this Operator’s Manual to avoid shutdowns and to maintain the machine’s value.
Maintain the machine’s supplementary equipment and tools as well.
The user must only carry out the maintenance and service work described in this Operator’s Manual. More extensive work must be carried out by an author- ized service workshop.
Use only original spare parts for repairs.
Measures to take in advance of maintenance, service and trouble shooting
General
•Ensure that the machine is situated in a safe area.
•Place the machine on a ßat surface with the arm system and outriggers down.
•Several components heat up during work with the machine. Do not commence any servicing or main- tenance tasks until the machine has cooled.
•Set out clear signs to inform persons in the vicinity that maintenance work is in progress.
•Ensure that the working area is sufÞciently illumi- nated to create a safe working environment.
•Ascertain the location of
Protective equipment
•Wear personal protective equipment. See instruc- tions under the heading ”Personal protective equip- ment”.
•Use an approved lifting device to secure and lift heavy machine parts. Also ensure that there is equipment to secure machine parts mechanically.
Working environment
•The area around the machine must be free of dirt in order to minimize the risk of slipping.
•Clean the machine. Dirt in the hydraulic system leads rapidly to consequential damage and stop- pages.
•Ensure that there is a sufÞciently large working area.
Discharge stored energy
•Turn off the motor.
•Put the main switch in the OFF position (O).
•Disconnect the power cable and place it so that it cannot be connected by mistake.
•When maintaining the track unit, discharge the pressure in the accumulator. Refer to the directions under ’Functional inspection” in the ’Maintenance and service” section.
Discharge pressure in the hydraulic system
•Undo the air Þlter so that the overpressure in the tank is discharged.
•Discharge pressure in the hydraulic cylinders by taking the load off the arm system by resting it on the ground.
•Wait until the pressure has decreased via internal leakage.
•When maintaining the track unit, discharge the pressure in the accumulator. Refer to the directions under ’Functional inspection” in the ’Maintenance and service” section.
Dismantling
•When dismantling machine parts, heavy compo- nents can start moving or fall down. Secure moving parts mechanically before loosening screw joints or hydraulic hoses.
•Pipe and hose couplings can remain pressurized despite the motor being switched off. Always work on the assumption that the hoses are under pressure when dismantling. Take great care when undoing connections and use appropriate personal protective equipment.
•Make sure to mark all cables and hoses that are undone in conjunction with service and mainte- nance in order to ensure correct reassembly.
Test running the machine
•The machine’s movements can be defective if a terminal, cable or hose is incorrectly mounted. Exercise caution during test runs and be prepared to turn the machine off immediately in the event of a fault.
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