Belt Pulley; Intermediate Shaft - Porsche 911 GT3 2003 Service Information

Section1.qxd 2/28/07 2:05 PM
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Belt pulley

Since the moving masses in the crankgear could be significantly reduced,
a torsional vibration damper is no longer necessary. A weight-optimized
belt pulley is used.
1520

Intermediate shaft

The intermediate shaft is driven by the crankshaft via spur gears. In order
to ensure that the engine runs smoothly and to reduce wear, the gears
are made of steel and manufactured in pairs. The chain sprockets on the
intermediate shaft which drive the camshafts are made of sintered steel.
The code on the intermediate shaft gear (arrow) and on the left half of the
crankcase indicates tolerance group 0 or 1 (eccentricity in the
crankcase).
At the end of the intermediate shaft is an intermediate part which is linked
to and drives the oil pump. When the intermediate shaft and the oil pump
are fitted, it is important to ensure that the intermediate part has axial
clearance.
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911 GT3
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