Imitated Clutch Disc - KOMATSU FORKLIFT - (Version JPG) - Page n° 2 - PDF Catalogue | Technical Documentation

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2) Differences in Characteristics

The characteristics of genuine parts are listed below:

• Superior start up

• Smooth startability

• Less noise

• Less vibration

• Long life expectancy

Differences by Symptom:

3) Differences in Dimensions

Although it is hard to distinguish by appearances, you can find some functional differences. Have a look closely and carefully to find critical points in the following photographs shown below.

[Genuine]

View from transmission side

[Imitation]

View from transmission side

[Differences]


Symptom	Genuine Parts	Imitation Parts
Judder	Smooth start with less vibration	Start with judder, abnormal vibration
Damping*	Less noise and vibration during traveling or idling	Easy to expect noise and judder during traveling
* Damper characteristics absorbing engine power alteration

Outer diameter of FA rivet: Genuine: 08.5 Imitation: 07.5

Note: The rivets may be copied from the genuine old type disc and are diverted to imitation unity disc.

View from engine side

CNP thickness

Genuine: 0.6 Imitation: 1.2

Note: Replacement of clutch facing is done only and you find rebuilt disc and old damper are used, since old and deformed damper won't work as expected.

4) Differences in Appearances [Damper]

You can see what happens if imitation parts are used:

[Damper]

Color of bushing Genuine: White Imitation: Light yellow The bushing for CP is used for RP.

Positioning holes for CP and

Imitation is not in alignment with standard bushing holes.

Torsion spring windows on CP and RP are in different shape, while imitation disc is in straight shape.

Problems caused by judder

Problems caused by noise

Easy wear and burnout disc with unmatched clutch facing.

Broken up damper with unmatched clutch disc to the engine.

Abbreviation FA: Facing CNP: Cushion Plate TSP: Torsion Spring CP: Clutch Plate RP: Retaining Plate STN: Stop Pin

Imitated Clutch Disc - KOMATSU FORKLIFT - #2

Engine powered forklift truck, Diesel forklift truck, Electric pallet truck, Wheel loader, Drum handler