How do you change hydrollic tappets on Renault traffic?

To change the hydraulic tappets on a Renault Trafic, start by removing the engine cover and any necessary components to access the cylinder head. Then, remove the camshaft by loosening the timing belt or chain, ensuring the engine is at TDC (top dead center). Replace the old tappets with new ones, ensuring they are properly aligned, and then reassemble the engine in reverse order. Always refer to the vehicle's service manual for specific torque settings and procedures.