- Fit the driven pulley unit in the tool so as the bolt
get into the masses clutch support holes. After-
wards make the support screw make contact with
a minimum force.
- Using the specific wrench, inserted 46 mm from
the side, remove the clutch central locking nut.
- Separate the driven pulley into its components (clutch with fan and contrast spring with plastic fittings).
CAUTION
THE TOOL MUST BE FIRMLY FIXED IN THE VICE AND THE CENTRAL SCREW MUST NOT BE
TIGHTENED WITH EXCESSIVE TORQUE AS THIS MAY DAMAGE THE PULLEY OR DEFORM THE
SPECIFIC TOOL.
Specific tooling
020444Y Tool for fitting/ removing the driven pulley clutch
020444Y009 46x55 Wrench
Inspecting the clutch
- Check the thickness of the clutch mass friction
material.
- The masses must not show traces of lubricants;
otherwise, check the driven pulley unit seals.
N.B.
UPON RUNNING-IN, THE MASSES MUST EX-
HIBIT A CENTRAL CONTACT SURFACE AND
MUST NOT BE DIFFERENT FROM ONE AN-
OTHER.
VARIOUS CONDITIONS CAN CAUSE THE
CLUTCH TO TEAR.
CAUTION
DO NOT OPEN THE MASSES USING TOOLS
TO PREVENT A VARIATION IN THE RETURN
SPRING LOAD.
Characteristic
Check minimum thickness
1 mm
Engine Fly 125 - 150 4T
ENG - 88
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