1 - Threaded rod

2 - Spring guide

4 - Compression spring

1.Remove cylinder-head cover. Screw a hex bolt, e.g. M 6 x 40 down into spring guide. Slacken threaded rod 2 turns and lift out valve guide.

2.Use a magnet to withdraw compression spring and ball. Thoroughly clean ball seat, ball, compression spring and oil duct. The ball seat remains in the cylinder head and great care must be taken to ensure that it is not damaged.

3.Replace 0-ring before installation. Tightening torque for threaded rod 3.5 Nm (2.8 ftlb).

17 - 10 Cleaning Oil Check Valve for Hydraulic Valve Tappets

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