2. Remove the timing belt covers, crankshaft pulley, bring the piston of the first cylinder to the TDC position of the end of the compression stroke. (see sections Bringing the piston of the first cylinder to the top dead center (TDC) position at the end of the compression stroke, Removal and installation the timing belt and its covers, Removal, condition check and installation of gears and timing belt tensioner), remove the timing belt, tensioner and camshaft sprocket (see section Removal, condition check and installation of gears and timing belt tensioner).
3. Remove the mounting bolts...
..and remove the back one (internal) timing belt cover.
..There is a camshaft oil seal under the cover.
4. Remove the camshaft oil seal.
5. Without using any solvent, wipe the walls of the oil seal seat and the surface of the camshaft journal with a dry, lint-free cloth. Sand the surfaces, removing all burrs, nicks and roughness that could damage the new oil seal.
6. Lubricate the lips of the new oil seal with clean engine oil, then place the latter on the camshaft journal.
7. Using a hammer and a suitable sized mandrel (the mandrel should only rest against the hard outer edge of the seal) place the seal perpendicularly into the housing socket.
8. Install the inner timing belt cover onto the cylinder head and tighten its mounting bolts to the required torque.
9. Reinstall the removed components (see sections Bringing the piston of the first cylinder to the top dead center (TDC) position at the end of the compression stroke, Removal and installation the timing belt and its covers, Removal, condition check and installation of gears and timing belt tensioner).
10. Adjust the tension of the auxiliary drive belt (see section Removal, installation and adjustment of the tension force of the auxiliary drive belt).