Volkswagen Golf Diesel 2009 Mode D'emploi page 255

Engine Mechanicals
Vibration Damper
The chain drive sprocket is mounted to the
crankshaft face and driven by a spur gear forged in
the crankshaft. The other end of the chain sprocket
also has a spur gear surface which drives the
vibration damper. This method of joining allows high
torque to be transmitted to the chain sprocket and
vibration damper while keeping the diameter of the
components small. This allows better sealing by the
radial shaft seal at the vibration damper hub. Special
tools are required during disassembly/assembly of
these components to prevent damage to the gears.
6
Gears are coded for
assembly — they can only
be installed one way
Chain Sprocket
Center Bolt
Spur Gear Drive
On the transmission side of the engine, a dual
mass fl ywheel or torque converter (depending on
transmission) is mounted to the crankshaft with
eight bolts.