Remove the right eccentric shaft adjustment drive motor, ignition coils of cylinders 1–4. Remove the right cylinder head cover and unscrew the spark plugs of cylinders 1–4. Remove the right VANOS intake and exhaust actuators.
Attention! First, it is necessary to turn the intake camshaft so that when removing the support bridge, the intermediate levers do not slip and damage the camshaft.
Turn the intake camshaft in the direction of rotation so that the inscription (1, Fig. 5.154) was directed upward in the direction of the axis of the 1st cylinder, and its cam (arrow) took a horizontal position.
Caution! The bearing caps of the camshafts of cylinders 1–4 and 5–8 cannot be interchanged.
The bearing caps of the intake camshaft on cylinder bank 1–4 are marked "LE1–LE5", read from the intake side. The pushrods move easily when installing the support bridge. Do not turn the support bridge upside down.
When assembling, install the bearing cover "LE1" so that the marking (fig. 5.155) read from the intake side. Install the nuts (M7) and tighten them to a torque of 14 N·m (1.4 kgf·m).
Turn the intake camshaft in the direction of rotation so that the cam of the 1st cylinder takes the inclined lower position (arrow), as shown in Figure 5.136. Marking (1) on the hexagon of the intake camshaft is located at the top.
Install the right-hand VANOS intake and exhaust actuators, screw in the spark plugs for cylinders 1–4, install the right-hand cylinder head cover and the ignition coils for cylinders 1–4.
Install the right eccentric shaft drive adjustment motor and assemble the motor.