Inspecting the clutch spring
- Measure the unloaded length of the spring of the
movable driven half-pulley.
Characteristic
Standard length:
106 mm
Refitting 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.
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
SO AS TO PREVENT A VARIATION IN THE RE-
TURN SPRING LOAD.
Characteristic
Minimum thickness permitted:
1 mm
- Support the driven pulley spring compressor ap-
propriate tool with the control screw in vertical axis.
- Arrange the tool with the medium length pins
screwed in position "C" on the inside.
- Introduce the adapter ring 11 with the chamfering
facing upwards.
- Insert the clutch on the adapter ring.
- Lubricate the end of the spring that abuts against
the servo-system closing collar.
- Insert the spring with its plastic holder in contact
with the clutch.
Engine Fly 125 - 150 4T
ENG - 92