## Cylinder Head

#### Valve Clearance Adjustment (cont'd)

6-5

1. Remove the injector seals from top of the cylinder head cover (A) and side of the cylinder head cover (B).

1. Remove the cylinder head cover.

1. Turn engine in direction of engine rotation to ''1st Cylinder TDC''.

1. Turn crankshaft in direction of engine rotation until cam pairs (A) and (B) point upwards. These valves are thus closed and can be checked.

1. The valve clearance is checked using a feeler gauge.

Valve clearance:

Intake valves:

0.40 + 0.05 mm

Exhaust valves:

0.40 + 0.05 mm

1. If you feel too much or too little drag, turn tappet until tappet groove points outwards.

Adjustment

1. Press down tappet using special tool (5-8840-9046-0 for intake) (5-8840-9047-0 for exhaust).

- Use different tool versions for exhaust and intake sides.
- It must be ensured that the valves are not adjusted when the pistons are at ''TDC''. The valves can strike the pistons.

1. Lever out shim using a small screwdriver and remove.

1. Example for determination of shim thickness:

1. Measurement between cam and tappets 0.45 mm
2. Thickness of installed shim + 3.15 mm

=3.6 mm

3. Nominal valve clearance (in) - 0.40 mm
4. Thickness of new shim = 3.20 mm

a a a