The rocker is always installed in the position in which it was before removal. If the rocker arm is replaced with a new one, then the camshaft must be checked and, if necessary, replaced.
A Press the pressure spring of the rocker arm with a screwdriver (only 6-cylinder engines); To do this, install the camshaft so that the rocker arm is unloaded. The engine must not be rotated by the camshaft sprocket.
Press down the valve disc using tool no. 110 589 0461 00 for 6-cylinder engines and no. 123 589 03 61 00 for 8-cylinder engines and remove the rocker arm.
Installation is made in an order, the return to removal.
Lubricate the contact surface of the rocker with oil before installation. On 6-cylinder engines, check the patency of the oil injection hole in the rocker arm and insert the pressure spring into the annular groove of the adjusting bolt.
Check valve clearance and adjust if necessary.
If necessary, check the basic fit of the hydraulic valve clearance compensator.