Cylinder Head, Installing

Installing Cylinder Head

Note:
- Always replace the cylinder head bolts.
- When performing repairs, replace seals, gaskets, self-locking nuts and bolts which have a specified tightening angle.
- Secure all hose connections with the correct hose clips (same as original equipment):
Refer to Parts Supplier.
- If repairing, carefully remove any remains of gasket material from the cylinder head and cylinder block. Make sure that no long scores or scratches are made on the surfaces.
- Carefully remove any remaining emery and abrasive material.
- Remove new cylinder head gasket from packaging, just before installation.
- Handle gasket extremely carefully. Damaging the silicone layer or the indented area will lead to leaks.
- No oil or coolant must be allowed to remain in the blind holes for the cylinder head bolts in the cylinder head.

- Before positioning cylinder head, set crankshaft and camshaft to TDC of cylinder 1.






- Loosen bolts -1 -and -2- on turbocharger bracket (about 2 full turns each) to avoid stressing when installing cylinder head.






- Place cylinder head gasket in position.
- Note position of centralizing pins in cylinder block -arrows-.
- Check installation position of cylinder head gasket. The Part No. should be legible from intake side.
- Position cylinder head.
- Insert cylinder head bolts and tighten by hand.






- Tighten cylinder head bolts in two stages in sequence shown as follows:
- Tighten using torque wrench:
- Stage 1: 40 Nm
- Tighten with rigid wrench:
- Stage 2: 180° (1 1/2turn) further (2 turns of 90° further is permissible)






Note: It is not necessary to retighten cylinder head bolts after repairs have been performed.

- Tighten exhaust turbocharger to exhaust manifold with new seal and attach bracket to cylinder block.
- Install cylinder head cover.
- Install toothed belt (adjust valve timing).

Note: Observe all instructions on removing and installing the toothed belt.

- Install ribbed belt and tensioner for ribbed belt. Refer to Drive Belts, Mounts, Brackets and Accessories - Drive Belt - Service and Repair - Procedures Service and Repair
- Install intake pipe.
- Replace coolant.
- After connecting battery, enter anti-theft code for radio.
Refer to, Radio operating instructions
- Close windows fully using window switches.
- Actuate all power window switches again for at least one second in the "close" direction to activate the automatic open/close function.
- Set clock to correct time.
- Perform throttle-valve control module adaption:

Tightening specifications






1) Replace bolts
2) Coat thread and head attachment area with high temperature lubricant G 052 112 A3