Unscrew screws -arrows- and remove pipe -1-.
Loosen clamp -2- and remove coolant hose. Remove screws -arrows- and swivel coolant hoses -1- to right.
Remove bolts -arrows- and remove bracket for heat shield -1-.
Unplug connector -arrow- from intake air temperature sender -C42-/intake manifold pressure sender -G71-.
Disconnect electrical connectors.
2. Valve 1 for camshaft adjuster -N205-.
4. Hall sender -G40-.
Remove screw -3-, unclip wiring harness and move to left. Remove oil dipstick -1-. Loosen bolts of camshaft housing in sequence -15...1- and unscrew them. Carefully separate the camshaft housing at the point where it is glued and remove. For reinstallation, note the belonging of the roller levers and hydraulic compensators. Remove the roller arms together with the hydraulic lifters and place them on a clean surface.
Installation
Note: Replace screws that are tightened to the specified angle. Replace gasket and seal with oil strainer.
Check position "TDC" Camshaft and crankshaft: Position camshaft clamp -T10494- on camshaft housing with screw -arrow-.
Carefully! Risk of valve train damage. During rotation, the camshafts must not be displaced in the axial direction.
The locking bolt -T10340- is screwed into the cylinder block as far as it will go and tightened to 30 Nm. Crankshaft turned forward until it touches locking screw -T1 0340- ="TDC" position". Check that the roller levers are correctly engaged at the ends of the valve stems and on the corresponding bearings.
Insert seal with oil filter -2- into cylinder head -1-. Place seal on dowel pins -arrows-.
Screw 2 studs into the cylinder head - pos. 2, 4-, for example -T10288/4-. Fit camshaft housing -3-, carefully lowering it vertically from top to bottom onto the studs screwed into the cylinder head.
Note: Do not tilt the camshaft housing.
Tighten the camshaft housing screws. Installation in reverse order. Install the high pressure pipe. Install toothed belt (adjust valve timing). Install ignition coils. Install coolant pump. Electrical connections and wiring.
Carefully! Risk of damage to valves and piston crowns after working on the valve train. To avoid damaging the valves and piston crowns, carefully crank the engine at least two revolutions.