You will need: a hex L-shaped wrench for the drain plug (usually this wrench is attached to the car in the driver's tool kit), a special wrench for unscrewing the oil filter or a large screwdriver, a funnel, a clean rag

If checking the hinge reveals the need to replace it, replace it

The camshaft is replaced in the following cases:

To improve the appearance of the engine compartment, and to reduce noise from the engine, a decorative plastic casing (screen) is installed