Operating instructions

  12 Valve Gear

Valve clearance adjustment

1. Release locknut (1).

2. Insert feeler gauge between valve bridge and

rocker arm.

3. Using Allen key, set adjusting screw (2) so that

the specified valve clearance is provided.

4. Feeler gauge must just pass through the gap.

5. Tighten locknut (1) to 90 + 9 Nm, holding

adjusting screw (2) firm.

6. Replace or rectify adjusting screws and/or

locknuts which do not move freely.

7. Check valve clearance.

Final steps

1. Remove barring tool (

Page 6  1).

2. Install cylinder-head cover (

Page 6  12).

6.4.3 Cylinder-head cover removal and installation

Preconditions

 Engine is stopped and starting disabled.

Special tools

Designation / Use Part No. Qty.

Torque wrench

Spare parts

Designation / Use Part No. Qty.

Gasket

SPC