CLUTCH INVESTIGATION REPORT

1
Clutch Investigation Report
2
Characteristic of clutch disc
Sample
2)
1)
Noise vibration when idling

• Hysterisis torque high
• Gap in the hub shaft

3
Characteristic of clutch cover
Sample
Bad pedal feeling!

• Release function is not smooth
• Release load very high
• Clamp load very high

3)
4)
2)
1)
Disengage is not correctly!

• Pressure plate lift is not enough

4
Durability of clutch set (1)
Disc torsional durability test result
Detected at 696,594 cycle ltStandardgt 3million
cycle must be kept ! Stop Pin strength is not
satisfied !
5
Durability of clutch set (2)
Cover dis-assembled
The component parts material and heat
treatment are different from original EXEDY one.
6
Durability of clutch set (3)
Other important durability tests
7
Potential problems of the Samples
What would be happened, if you install them in
your car?

• The driver might feel heaver clutch pedal force.
• The clutch might become sticky.
• The disc will be damaged easily due to too much
  pressure.
• Difficult to engage or disengage gear.

8
Conclusion

• These products are imitation from the
  clutch.
• The specifications are poor.
• CD assembly Low durability.
• CC assembly All characteristics are out of
  specifications.
• There is no possibility to find any advantage
  compared with original one.
• To avoid any troubles with your customer, we
  recommend to use strongly the original brand
  clutches such as.