How do you install tappet valve lifters Mercedes 190e?

To install tappet valve lifters on a Mercedes 190E, first, remove the valve cover and timing chain or belt to access the lifters. Carefully take out the old lifters using a magnet or a hook tool, ensuring not to damage the surrounding components. Clean the lifter bores, then apply a thin film of engine oil to the new lifters before installing them. Finally, reassemble the timing components and valve cover, ensuring all bolts are torqued to the manufacturer's specifications.