30 / 34
28
Perception
D.M.F. fails
Problem
Strong noise and no torque transmission. Secondary
flywheel is blocked or free to rotate at 360°
Cause
Mechanical damage
Perception
D.M.F. malfunction, friction noise
Problem
Trace of liquid or solid grease from primary
flywheel welding
Cause
Defective primary flywheel
Perception
Loud humming, vibration
Problem
Balance weight missing (possible to see welding
spots)
Cause
Mechanical impact on balance weight
Perception
Noise and vibration
Problem
Secondary flywheel free to rotate beyond
permissible free movement
Cause
Springs’ loss of effectiveness
Perception
Frequent noise, and difficulty in changing gear
Problem
Folded or incorrectly fitted dowel pins
Cause
Mechanical damage
8
9
10
11
12