Replacing the camshaft seals of the K4M engine

The camshaft oil seals are replaced during cylinder head repair and when oil leaks from under the seal.

If the seals are replaced on the engine, the drive belts and timing belt must be removed, and the phaser and exhaust valve pulley must also be removed.

For clarity, all operations are shown on a dismantled cylinder head.

The polymer oil seal of the 1.6 L engines has a flat working lip (1) and a protective sleeve (2) that serves for fitting the seal to the engine (see Fig. 1).

Fitting the exhaust valve camshaft oil seal

Always use the protective sleeve, as seals of this type are very easily damaged. It is strictly forbidden to touch the polymer seal itself, in order to exclude oil leaks after fitting the seal to the engine.

1. Screw the stud (1) of the Mot1632 tool into the camshaft (see Fig. 2).

2. Fit the protective sleeve with the seal placed on it onto the camshaft. Do not touch the seal (see Fig. 3).

3. Fit the pressure cap (2) and the nut with collar (1) of the Mot1632 tool (see Fig. 4).
4. Screw in the nut with collar until the cap touches the cylinder head.
5. Remove the nut, cap, protective sleeve and stud.

Fitting the intake valve camshaft oil seal

1. Fit the protective sleeve with the seal onto the camshaft, trying not to touch the seal itself with your hands (see the arrow, Fig. 5).
2. Press on the centre of the protective sleeve so that the seal is secured in its seat.

3. Pull out the protective sleeve so that the seal does not fall out of its seat (see Fig. 6).

4. Screw the stud of the Mot1632 tool into the camshaft (see Fig. 7).

5. Fit the pressure cap (2) and the nut with collar (1) of the Mot1632 tool (see Fig. 8).
6. Screw in the nut with collar until the cap touches the cylinder head.
7. Remove the nut, pressure cap and stud.