SECTION 4 - BOOM & PLATFORM
4-12
3121784
4.5
ROPES TENSION ADJUSTMENT PROCEDURE
NOTE:
Do not clamp on threads.
Figure 4-6. Clamping Wire Ropes
1.
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. (two nuts
with relative counter-nut for extend ropes and
one nut with relative counter-nut for retract
ropes rocker arm).
2.
Completely retract both extendible arms and
make them escape for about 30-40cm.
3.
Tighten the nut for the traction of the fixing
rocker arm of the return ropes to a torque of
10Nm.
Figure 4-7. Return ropes fixing rocker arm
4.
Completely extend the extensions and retract
them by about 30-40cm.
5.
Tighten the bolts of the two output cables so
that the threaded terminals come out of 65±3
mm from the rocker arm. During adjustment
keep the ropes blocked to prevent them turning
with the nuts. Make use of the relevant seat for
the wrench on the cable socket.
Figure 4-8. Nuts for exit cables stop
Figure 4-9. Terminal with seat for anti-rotation key
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