28
8.8) Replacing the drive belt
(spare part code: 6003787)
Drive belt must be replaced if worn out.
The process is easier with a cutting disc fi tted:
– Disassemble the side cover (Ref. to § 8.7.1).
– Unscrew screw (V), remove the fan group (GA) and unthread the worn belt.
1
Place the belt on the drive shaft pulley, behind the rear pinion.
2
Thread it behind plate (P) and under rolls (R) and place it against the front split pulley.
– Assemble the fan group, polarizing it with respect to the two faces of the drive shaft
and lightly tighten the screw (V) into place.
NOTE:
During reassembly, fi rstly manually
alternate blocking and rotation of the disc.
This will counter the rotation of the drive
shaft produced by the two split pulleys
getting closer.
Secondly, the correct radial position of the
belt must be obtained with respect to the
internal surfaces of the split pulleys so that
the belt runs towards the exterior.
– Tighten screw (V)
50 Nm
.
– Reassemble the side cover.
1
2
WARNING:
During the Fan
group (GA) reassembly phase,
the belt absolutely must NOT be
compressed between the two split
pulleys, but should run towards the
exterior to avoid being deformed.
(V)
(GA)
(R)
(P)
Split pulleys
Drive
belt
