Cylinder Head, Installing

Cylinder Head, Installing

Special tools, testers and auxiliary items required

• Camshaft Bar (T10068 A)

Procedure

• Replace cylinder head bolts.

• Always replace self-locking nuts, bolts which have been tightened to tightening specifications as well as gaskets and O-rings.

• Carefully remove residual sealant from cylinder head and cylinder block. Make sure that no long scrapes or scratches result.

• Only unpack new cylinder head gasket immediately prior to installation.

• Handle gasket carefully. Damage in silicon layer and recessed area lead to leakage.

• The plastic protectors installed to protect the open valves must only be removed immediately before fitting the cylinder head.

• When installing exchanged cylinder head, contact surfaces between hydraulic adjusting elements, roller rocker levers and cam running surfaces must be oiled before installation.

• There must be no oil or coolant in the blind holes for the cylinder head bolts in the cylinder block.

• Secure all hose connections with hose clamps appropriate for the model.

• When replacing cylinder head or cylinder head seal, coolant and engine oil must be changed.

- Position camshafts at TDC marking before positioning cylinder head.

- Cams - A - of cylinder 1 must face each other.





- Verify camshaft TDC position:





• It must be possible to insert (T10068 A) into both shaft grooves.

- Check again if crankshaft is positioned at TDC - arrow -.





- Position cylinder head gasket.





• Observe the centering pins in cylinder block.

• Observe cylinder head seal location, identification: Part number must be visible from intake side.

- Install cylinder head.

- Insert cylinder head bolts and tighten by hand.

• The longer cylinder head bolts must be inserted in the middle holes of cylinder head.

- Tighten cylinder head bolts. Refer to => [ Cylinder Head - Tightening Specifications and Tightening Sequence ] Cylinder Head Component Overview.

• There is no requirement to tighten the cylinder head bolts after repairs.

- Install camshaft timing chain => [ Installing the camshaft timing
chain (adjusting the timing) ] Camshaft Timing Chain.

- Install cylinder head cover. Refer to => [ Cylinder Head Cover ] Service and Repair.

- Install intake manifold.

- Replace engine oil.

- Connect Ground (GND) cable to battery.

- Change coolant. Refer to => [ Cooling System, Draining and Filling ] Procedures.

Tightening Specifications






* Replace nuts