Remove poly V-belt and tensioner for poly V-belt → Chapter.
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Detach air cleaner cover -arrow-.
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Unplug electrical connectors:
1 -
On secondary air pump motor -V101- (vehicles with secondary air system)
2 -
On activated charcoal filter solenoid valve 1 -N80-
3 -
On output stage -N122-
4 -
On air mass meter -G70-
5 -
On charge pressure control solenoid valve -N75-
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Move wiring harness clear and lay on top of engine.
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Detach hose connections and remove air cleaner housing -arrows-.
USA models:
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Disconnect vacuum line leading to fuel system diagnostic pump -V144--arrow-.
All vehicles (continued):
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Unplug electrical connector -1- at coolant temperature sender -G2-/coolant temperature sender -G62-.
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Remove vacuum hose at combination valve for secondary air -arrow-.
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Unclip/release all electrical wires on the cylinder head and move clear.
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Remove crankcase breather pipe -2-.
Vehicles with secondary air system:
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Detach pipe -1- on combination valve for secondary air from cylinder head cover and heat shield -3-.
All vehicles (continued):
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Remove heat shield -3-.
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Unscrew bolts -1- and -2- for oil supply pipe.
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Remove bolts -3- for turbocharger.
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Detach coolant hose for heat exchanger at rear of cylinder head (release retaining clip on connecting flange).
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Remove toothed belt cover (top section)
Caution
Irreparable damage can be caused if the toothed belt slips.
Turn crankshaft only in direction of engine rotation (in clockwise direction).
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Rotate crankshaft to “TDC” by turning bolt for toothed belt sprocket.
l
Marking on camshaft sprocket and marking on crankshaft must be aligned to “TDC”-arrows-.
Caution
Risk of damage to toothed belt tensioner.
The toothed belt tensioner is oil-damped and can therefore only be compressed slowly by applying constant pressure.
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Applying constant and moderate force, apply hexagon key through opening -2- to press toothed belt tensioning roller -1- anti-clockwise -arrow- until piston can be locked with locking pin -T40011-.
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Insert locking pin -T40011- and make sure that it remains in place.
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Mark rotation direction of toothed belt with chalk or felt-tip pen and remove toothed belt.