Installing the Cylinder Head

Special Tools
951 2050
951 2767
999 5450
999 5451
999 5452
999 5454
999 5718
999 5719

Note! As the illustrations in this service information are used for different model years and/or models, some variation may occur. However, the essential information in the illustrations is always correct.

Tightening torques
For tightening torques not in the text see Specifications.

Aligning the crankshaft
Turn the crankshaft counter-clockwise (viewed from the rear of the engine) until the piston in cylinder 1 reaches Top Dead Center (TDC).
Continue turning counter-clockwise until the piston in cylinder 1 is approximately 2 - 3 cm (0.79 - 1.2 inch) Before Top Dead Center (BTDC).





Install the crankshaft stop 5451. Ensure that it bottoms out against the cylinder block.
Now turn the crankshaft clockwise (viewed from the rear of the engine) until the crankshaft counter-weight is in contact with the crankshaft stop.

Installing the cylinder head





Install a new cylinder head gasket
Install the cylinder head.
Use new screws
Lubricate and install all the screws.
Tighten the screws in the following order. Tighten the screws alternately from the middle and outwards.
- 20 Nm (15 ft. lbs.)
- 60 Nm (44 ft. lbs.)
- Angle-tighten 130°. Use protractor 951 2050.

Installing valve lifters and camshafts
Lubricate the valve guide wells.





Install all valve lifters.
Lubricate the camshaft bearing seats.
Install the intake camshaft. Ensure that the groove at the back of the camshaft is above an imaginary center line
Position the exhaust camshaft. Ensure that the groove at the back of the camshaft is below an imaginary center line.

Applying liquid gasket





Install new O-rings around the spark plug wells at the cylinder head.
Apply liquid gasket 11 61 059 to the camshaft cover. The surface must be completely covered without any excess. Use roller 951 2767

Note! Ensure that no liquid gasket gets in to the oil ducts.

Installing the camshaft covers
Lubricate the camshaft lobes, the camshaft bearing surfaces and the valve lifters.





Install the camshaft cover.
Install press tool 999 5454 (x2).
Draw the camshaft cover alternately down, keeping it parallel to the cylinder head with press tool
Install all the screws and tighten.
Remove the press tools.
Install the variable valve timing solenoid with a new gasket. Tighten.

Installing the front camshaft seal





Use drift 999 5718 at the camshaft where the variable valve timing unit is to placed and drift 999 5719 at camshafts without variable valve timing.
Lubricate the surface of the seal that the camshaft rotates against.
Tap in the seal until the drift bottoms against the end of the camshaft.

Installing the rear camshaft seal
Use drift 999 5450.
Lubricate the surface of the seal that the camshaft rotates against.





Press in the seal until the drift bottoms out.

Note! If there are grooves on the camshaft the seal can be pressed in a further 2 mm, by reversing the sleeve.

Securing the camshafts
Use camshaft adjustment tool 999 5452. Separate the camshaft adjustment tool into two units.

Note! The camshafts must not be turned more than is listed in the text below. The valves may be damaged!





Install the exhaust camshaft section of the adjustment tool.
Counterhold the adjustment tool and screws it into place at the rear of the camshaft.
Screw the adjustment tool sections together into one.
Check that the screws retaining the adjustment tool to the camshafts and the screws holding the tool together are well tightened.