Clutch / Transmission Parts

PHC Valeo Flywheel

Advantages of PHC Valeo Flywheel

  • Lower fuel consumption owing to a lower engine speed
  • Reduction of rattle noise and body boom in all operational ranges
  • Reduction of synchronization wear
  • Reduction of gear shift effort
  • Protection of power train parts from excessive loading
  • Excellent capacity of releasing irregular vibration rising from engine and transmitting to transmission, increasing the quietness of engine and transmissions, improving durability and fuel efficiency.

1. SMF(Single Mass Flywheel)

SMF has greater thermal and warp resistance. The SMF is extremely durable, due to its efficient heat dissipation qualities and the lack of complex high wearing flywheel components. It allows for quicker engine revving; they are therefore suitable for frequent engine speed and gear change conditions, such as racing engines or off-road driving. Technically, the SMF reduces engine vibrations due to the increased inertia of the solid flywheel and offers greater longevity The SMF reduces engine noise, the crankshaft and in-pot shaft bending. It also increases the stability of the system by re-adjusting the clutch.

2. DMF(Dual Mass Flywheel)

PHC Valeo DMF provides driving comfort by improving rattle and booming noise to a great extent throughout the entire range of driving. PHC Valeo developed 2 types of DMF(KDMF, CDMF). PHC Valeo DMF has excellent NVH performance by primarily damping random vibration, transferred from the engine. The DMF is suitable for both passenger vehicles and commercial vehicles. Especially, The DMF is applicable to various vehicles such as manual transmission, automatic transmissions, continuously variable transmissions, wet-dct, hybrid transmissions etc.


IATF 16949 / ISO 14001/ OHSAS 18001

Flywheel Type

  • Dual Mass Flywheel

    Dual Mass Flywheel

  • Pendulum Dual Mass Flywheel

    Pendulum Dual Mass Flywheel

  • Direct Damper Flywheel

    Direct Damper Flywheel

  • C-Dual Mass Flywheel

    C-Dual Mass Flywheel

  • Dual Mass Damper

    Dual Mass Damper

  • Single Mass Flywheel

    Single Mass Flywheel

Marking & Details on Flywheel

Marking & Details on Flywheel

Box Details

  • Passenger vehicle box

Label Details

Label Details


  • Troubleshooting(DMF)
    • Finding : Discoloured blue/purple color on both sides, visible damage
    • Symptom : DMF malfunction, noise
    • Cause : Very high thermal load
  • Troubleshooting(DMF)
    • Finding : Trace of liquid or solid grease from primary flywheel welding
    • Symptom : DMF malfunction, noise
    • Cause : Defective primary flywheel
  • Troubleshooting(DMF)
    • Finding : DMF bearing is damaged
    • Symptom : DMF malfunction
    • Cause : Wear, mechanical impact
  • Troubleshooting(DMF)
    • Finding : Grease egress, sealing cap missing, discoloured brown due to overload
    • Symptom : DMF malfunction
    • Cause : Very high thermal load, mechanical damage
  • Troubleshooting(DMF)
    • Finding : Facing of clutch disc melted
    • Symptom : Limited operational reliability of DMF
    • Cause : Very high thermal load
  • Troubleshooting(DMF)
    • Finding : DMF ring starter gears heavily worn or broken
    • Symptom : Impaired starter operation, noise
    • Cause : Defective operation of starting engine
  • Troubleshooting(DMF)
    • Finding : Secondary flywheel scores the primary flywheel
    • Symptom : Impaired starter operation, noise
    • Cause : DMF bearing or bushing is worn out
  • Troubleshooting(DMF)
    • Finding : Cracks on the friction surface
    • Symptom : Limited operational reliability of DMF
    • Cause : Very high thermal load
  • Troubleshooting(DMF)
    • Finding : Damage on the friction surface, Worn out clutch
    • Symptom : The clutch is unable to generate the required torque
    • Cause : The clutch facing rivets score on the friction surface of DMF
  • Troubleshooting(DMF)
    • Finding : Folded or incorrectly fitted dowel pins
    • Symptom : Difficult changing gear, noise
    • Cause : Mechanical damage
  • Troubleshooting(DMF)
    • Finding : Secondary flywheel free to rotate beyond permissible free movement
    • Symptom : Vibration, noise
    • Cause : Springs’ loss of effectiveness
  • Troubleshooting(DMF)
    • Finding : Sensor ring teeth distorted
    • Symptom : Engine runs uneven
    • Cause : Mechanical damage

Clutch Installation Guide

Clutch Removal

  • Mark drive shafts to match up on reassembly.
  • Fully support transmission making sure that it’s securely fastened to transmission stand. Do not allow gearbox to hang on the input shaft.
  • Remove gearbox directly backward but not diagonally.
Clutch Removal
For Best Results
For Best Results
  • Install new release bearing and pilot bearing/bushing whenever installing a new clutch
  • Replace clutches as KIT
  • Surface of the pressure plate & flywheel should be even or flat.

Inspection & Checkpoint

Checking abnormality before replacement is important, i.e. checking hydraulics, bearing, clutch cable, oil leakage etc.
Make sure new products are exactly for your application.
If try to engage any same size clutch to your mission,

A. facing
No oil or contamination on facing is allowed.
B. clutch disc
Check spline teeth or flywheel runout.
Apply 'little' grease on teeth and drive shaft spline.
C. flywheel
Check overheating crack, scoring, warping and contact surface(with facing) flatness.
D. input shaft
Check spline wear. Apply little grease on the teeth.
E. release bearing
Remove old grease/Apply thin grease. New bearing must slide freely.
Apply thin grease on fork pivot and fingers. Ensure smooth operation.


  • Make flywheel/pressure plate/disc facing absolutely clean(No dust or rust using solvent or cleaner)
  • Use alignment tool to correctly align the disc to flywheel.
  • Assemble cover to flywheel dowel holes. Tighten bolts evenly according to diagonal order.
    Flywheel to crank(8 bolts)53 ft. lbs.
  • Install transmission housing carefully. Input shaft slowly with care as first picture shown above.
    DO NOT FORCE or use the tightening of the bell housing bolts to draw transmission to the engine block.
    Rotate input shaft if necessary to align splines.
    DO NOT HANG transmission jack lift, during installation.
  • Refer to the vehicle manufacturer's specifications for correct adjustment of the clutch.
  • After adjusting clutch pedal release distance and hydraulics, take a load test.

Production process

The Highest Quality for Customer Satisfaction

PHC Valeo has made unstinting investment in equipment to manufacture the best product for customer's satisfaction. We're realizing zero defects through building the newest cutting-edge automatic production system and production management which all processes are visible.

Also, we provide the optimal working environment with locating the equipment ergonomically for the workers. We have especially raised the efficiency of the working environment and lowered the dangers, utilizing CoBot. That is, we offer the optimal working environment which is the base of manufacturing products of zero defects.

Safety precautions

  • Handle with care
  • Check for smooth installation
  • Remove excess grease
  • Diagonal bolt tightening
  • Check alignment of clutch and transmission


  • Do not use this clutch for racing, high performance driving, hot rodding, or any situation whenever engine RPMs may exceed manufacturer's specifications for the engine.
  • The pressure plate can explode unexpectedly causing serious injury or death to vehicle occupants and bystanders.
  • The clutch cover and bell housing will not protect from exploding the pressure plate.
  • Always use the recommended clutch set for your specific application.