Left Timing Chain

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Screw/replace → Initial tightening: 80 Nm (59 ftlb.) → Final tightening: +90°
Screw/replace → Initial tightening: 80 Nm (59 ftlb.) → Final tightening: +90°
Camshaft sprocket, for outlet camshaft
Camshaft controller, for intake camshaft
- "in-take" marking
Left timing chain
- For re-installation, mark rolling direction with paint/colormarker
- Remove from camshafts
Screw → Tightening torque: 9 Nm (6.5 ftlb.)
Slide
Chain tensioner, for left timing chain
Bearing plate, for drive sprocket
Screw/replace → Initial tightening: 8 Nm (6 ftlb.) → Final tightening: +45°
Drive sprocket, for left timing chain
Bearing pin, for drive sprocket for left timing chain
Screws/replace → Initial tightening: 5 Nm (3.5 ftlb.) → Final tightening: +60 Nm (+44 ftlb.)

Fig 1: Identifying Left Timing Chain Components

Courtesy of PORSCHE CARS NORTH AMERICA, INC.