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5.4. WEEKLY CHECK
The cleaning must be done weekly also to better fi nd liquids leaking or loosened
tightening.
Any intervention has to be carried out by:
When the diesel engine is running, check the hydraulic pressure level, by completely
retiring one of the stabilizers and checking if this corresponds to the value shown in
chapter 1.
the integrity of the extension
boom chains and the connections (belleville washers,
nuts and cotter pins)
Check the tracks tension, (only for the track version). If they’re infl ected, it is
recommended to put them under tension by using a greasing pump (6bar), as shown
in Fig. 5.3. As the machine is raised up, the sagging of the rubber crawler is adjusted
to about 10 to 15 mm (Fig 5.3a)
Check the level of the endothermal engine fumes and its noise level.
Check the correct manual pump functioning, it is enough to pump some seconds
without making any maneuvers and check if the pressure increase during pumpin
check the instruction plates are legible and not damaged, in contrary case substitute
them
Check that the ground and cage commands are functioning. Using the controls the
movement must be correct.
Grease all the articulations arms, cylinders, stabilizers and the cage. Before applying
the greasing pump, clean the greasers and then keep on greasing until the old grease
comes out.
Execute all the checks as shown in the previous paragraph
the right operation of the block valve on the boom lifting cylinder in this way:
1. fi ft up the boom till about 10°
2. turn off the engin and act on the boom lifting level on the hydraulic distri
butor moving the lifting and the lowering maneuver alternately; verify that the boom
doesn’t lower.
Inform the responsible personnel about any failure encountered.
Fig.5.3
Fig.5.3a
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