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8. Unscrew tensioning screw, special tool 9632, from the tensioning element.
9. Remove be wrap and fit sprocket wheel with chain on the flange of the exhaust camshaft.
10. Position drive plate or driver star of the oil extraction pump on the sprocket wheel. Fit hexagon-head bolt M6 x 15 (10.9). Tighten hexagon-head
bolt by hand only.
11. Fit auxiliary chain tensioner of special tool 9599 on cylinder head 1 - 3. Fit auxiliary chain tensioner without sealing ring and fasten on the
crankcase only hand-tight. The mechanical auxiliary chain tensioners must be installed with the correct pretension when the valve timing is
adjusted or checked. The necessary pretension force has been achieved when the measuring pin is flush with the face surface of the pressure screw.
Turn the screw if necessary.
12. Unscrew the chain tensioner (fitted to the crankcase half of cylinder bank 4 - 6), attach auxiliary chain tensioner (special tool 9599) and adjust
pretension force (see Item 12).
Removing
Removing valve tappets of cylinder bank 4 - 6
This is a source reference. Confirm exact model applicability in the original material.