V-SMART June 2018

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Technical BULLETINS

836004 flywheel spacer

Part Number: 836004

For Vehicle : Renault Megane, Renault Scenic, Nissan Micra, Nissan Note, Nissan NV200, Suzuki Jimni Valeo part number 836004 is a flexible flywheel. The flexible flywheel is Valeo technology, an evolution of a rigid flywheel. It incorporates a solid outer flywheel and a thinner flex plate. The aim of the flexible flywheel is to add an additional spring mass element to isolate the vibrations from the engine to the gearbox. In summary the flexible flywheel is a hybrid of the dual mass and solid flywheel technologies. There are a number of benefits of this technology including reduced engine noise at high rpm, a lower amount of vibration experienced through the clutch pedal and reduced stress on the crankshaft creating a greater life expectancy of the flywheel. The flexible flywheel 836004 may be visually different to the design of the flywheel you remove from the vehicle but the flywheel spacer (see image below) needs to be retained (OE number for flywheel spacer 82 00 432 132) and used in conjunction with the 836004. If this is not retained or replaced the bolts (OE number for bolts 12 31 568 46R) will be too long to bolt the flywheel into location.

Flywheel, flywheel spacer and bolts

Vibration dampening technology within the hydraulic clutch line The reduction of oscillations in the clutch actuation system is a top priority for automotive manufacturers with the end users driving experience at the forefront of this prioritisation. The clutch line frequency modulator and the ‘oscillation absorber’ are two components placed on many vehicles within a hydraulic clutch line that are specifically calibrated to different vehicles and engines to dampen vibrations felt through the clutch line. These oscillations/vibrations are experienced by the end user when the clutch pedal is actuated. These symptoms are sometimes incorrectly attributed to a faulty clutch or flywheel but these vibrations can be a result of a faulty/worn or missing frequency modulator or oscillation absorber.

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