Note: The technology for removing and installing intermediate levers has differences.
Prepare the equipment "11.9.470", "11.9.472", "11.9.473", "11.9.474", "11.9.475", "11.9.480" and "11.9.490" and "cash register" for the layout of the removed parts by cylinder numbers. Removal of the intermediate levers in the left cylinder head on the side of cylinders 5–8 must be carried out in the following order.
Remove the left eccentric shaft adjustment drive motor, the ignition coils of cylinders 5–8, the left cylinder head cover and unscrew the spark plugs of cylinders 5–8. Remove the left VANOS intake and exhaust actuators.
Attention, very important! 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 counterclockwise so that the inscription (1, see Fig. 5.132) was directed upwards in the direction of the axis of the 8th cylinder, and its cam took a horizontal position.
Caution! The bearing caps of the camshafts of cylinders 1–4 and 5–8 cannot be interchanged.
The inlet camshaft bearing caps on cylinder bank 5–8 are marked "RE1–RE5" as seen from the inlet side.
Loosen the mounting nuts (arrows, see Fig. 5.133) and remove the bearing cover "RE1".
Loosen and unscrew the eight nuts (arrows, see Fig. 5.134) fastening the support crossbar (1), starting from the outer nuts and moving towards the center.
Attention!
- When removing the support crossbar, do not turn it over.
- Push rods are divided into tolerance classes.
- On the intake side, only tappet levers of one tolerance class can be installed per cylinder. Tolerance classes are designated by numbers from 1 to 4.
- The push rods have new class markings.
After removing the support bridge, the roller levers of the pushrods become accessible. Levers (1, Fig. 5.152) do not remove the intake side tappets.
Clamp the "11.9.470" device in a vice. Carefully remove the support bridge from the cylinder head by moving it upwards. Do not turn the support bridge over.
Lay the support lintel (1, see Fig. 5.135) together with the intake camshaft and eccentric shaft, as shown in the figure, on the device "11.9.470".
Note: Removal of intermediate levers should begin with the 8th cylinder, for cylinders 5–7 the actions are similar.
The further technology for replacing the intermediate levers in the left cylinder head is discussed above, in the section "Replacing the pushrod levers on the intake side of the left cylinder head".
When installing the intermediate levers, it is necessary to fix the intake camshaft in the axial direction, for which purpose install the device "11.9.472" and fix it using the device "11.9.475" (fig. 5.153), which prevents the rotation and shifting of the intake camshaft when installing the pushrod levers.
