JLG X20JPLUS, Operator, Safety, Maintenance And Service Manual

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MAINTENANCE
171
MUX20JP021602
Boom Lift Models X20JPLUS
8 Activate the movement of the extendible arms several times and check that the
residual loads on the ropes are 10Nm .
9 This procedure could require several attempts before it is completed correctly.
10 The adjustment is correct when the ropes do not emit any noise during ex ‐
tension or return and the torque value prescribed is reached on all of the ro ‐
pes.
11 Once calibration has been concluded, tighten the counternuts and re ‐ mount
the sump.
12.15.4.Five ‐ yearly inspection
The replacement of the cables and pulleys is advisable every 5 years, even in shor ‐
ter time according to the working hours.
Further inspections of the extension system are required in the following situa ‐
tions:
• Machine
exposed to extreme environmental conditions (for example low tem ‐
peratures, sea environments, etc.).
• Incorrect movement of the arms or noises caused by the movement of the ex ‐
tensions.
• Unused
machine for long periods.
• Overloaded machine or subject to collisions.
• Machine subject to short circuit, the ropes could be damaged internally.
Fig. 172 Exit ropes nuts
fixing
Fig. 173 Ropes terminal Fig. 174 Tension ropes re ‐
gulation
Do not subject the ropes to torsion.