7 - PERIODIC SAFETY INSPECTIONS
7 - 7
STEERING OPERATING MODES
Make sure the steering system is working correctly in the three modes envisaged:
- four-wheel coordinated steering
- steering on the front axle
- crab steering
PLATES AND INSTRUCTIONS
Make sure all the plates are present on the machine, and the various instruction pages are actually in the removable container
in the cab. They must all be in good condition.
The main ones are shown in the relative chapters of this manual. If they are illegible or have been lost, you must request
replacements (giving the serial number on the specific part as a reference).
STABILISERS COMMAND LOCK
- Raise the boom until its lower part (without load) coincides with the upper corner of the cab.
- Operate the stabiliser command. The control must be locked.
- Lower the boom and repeat the commands, making sure they can be activated in this condition.
CROSSWAYS LEVELLING "TILTING" COMMANDS LOCK
- Raise the boom until its lower part (without load) coincides with the upper corner of the cab.
- Activate the TILTING command. The control must be locked.
- Lower the boom and repeat the commands, making sure they can be activated in this condition.
USE AND MAINTENANCE INSTRUCTIONS MANUAL
Make sure the manual is effectively in the cab and in good condition. In case of loss or damage, request a duplicate indicating,
if possible, the reference code at the bottom of the cover, otherwise use the SAV number of the machine.
POWER STEERING UNIT CALIBRATION PRESSURE
- Stop the engine and remove the ignition key.
- Connect the pressure gauge cable to the pressure connection on the pump (as for the HYDRAULIC OIL SYSTEM
PRESSURE check).
- Start the engine
- Hold the transmission in neutral position
- Accelerate to approx. 1800 rpm
- Turn the steering wheel on full lock to any side of the machine and continuing to exert a slight force and read the pressure
gauge in the cab
- System pressure should be over 180 bar (180 kg/cm²)
HYDRAULIC SYSTEM OIL PRESSURE
- Stop the engine and remove the ignition key.
- Connect the small cable in the engine bay to the pressure socket "A"
- Start the engine
- Fully retract the telescopic boom.
- Accelerate to 2,400 rpm, while keeping boom retraction activated.
- Check on the gauge in the cab that the pressure is between 205 and 215 Bar.
WARNING! If the gauge indicates a pressure value different from that
expected, please ask for assistance from qualified Merlo Service personnel.
When the checking of the pressure is ended, disconnect the small hose from
the pump and rearrange it in the engine compartment.
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