JLG X23J Operator Manual - Manual (Page 152)

7.20 T HREE ‑ MONTHLY INSPECTION
• Remove all protection sumps from the third arm and the two extensions. Use an electric
torch to visually check the state of the ropes and the extension pulleys.
• Check the correct rope tension, trying to bend them manually. If they are pulled correctly
they should not be able to move more than a few millimetres.
• Check that in the extension arms exit phase the return ropes are sufficiently in traction in
a way not to allow relative contact with the third arm.
• Vice versa in the extension return phase, check that the outlet ropes are subject to a
tension that allows them not to come into contact with the second extension or the
cylinder.
• Use a dynamometric wrench to check the correct torque of al rope fixing nuts and the
respective rocker arms; recommended torque 10 Nm.
If the tension of the ropes should not be adequate the conditions for use must be restored by
scrupulously following the Ropes Tension Adjustment procedure reported below.
Ropes Tension Adjustment Procedure
1. Stabilise the machine on the flat.
2. Remove the cover in the rear part of the third arm.
3. Loosen the register counter‑nuts by a few turns, position them in a way to access the
adjustment nuts in order to make the adjustment.
(2 nuts with relative counter‑nut for outlet ropes and one nut with relative counter‑nut for
return ropes rocker arm).
4. Completely retract both extendible arms and make them escape for about 30‑40cm.
5. Tighten the nut for the traction of the fixing rocker arm of the return ropes to a torque
of 10Nm.
BOOM LIFT MODELS X23J
JLG
148 X23JR0620113
R
ETURN ROPES FIXING ROCKER ARM