Loosen The Cylinder Head Bolts In The Following Sequence -1 Through 10-

WARNING: This page is about a different variant/trim than selected.

Fig 1: Identifying Cylinder Head Bolt Loosening Sequence

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-- Remove bolts and remove cylinder head.

Installing

Tightening specifications, refer to CYLINDER HEAD COVER AND CYLINDER HEAD OVERVIEW , Figure.

CAUTION:

The sealing surfaces could be damaged.

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

Risk of damaging cylinder block.

No oil or coolant must be in the cylinder head bolt blind holes in the cylinder block.

Risk of leaks in cylinder head seal.

Carefully remove sealant residue from cylinder head and cylinder block. Make sure that no long scrapes or scratches result.
Carefully remove all grinding and sanding residue.
Only unpack new cylinder head gasket immediately prior to installation.
To prevent cylinder head seal silicone layer and recessed area from being damaged, always handle seal extremely carefully.

Risk of damaging open valves.

If a replacement cylinder is installed, only remove plastic base right before cylinder head is installed to protect open valves.

NOTE:

Replace bolts which have been tightened to torque.

Replace self-locking nuts, sealing rings, seals and O-rings.

If a replacement cylinder is installed, the contact surfaces between the hydraulic adjusting elements, roller rocker levers and cam running surfaces must be lubricated before installing the camshaft housing.

The hose supports, air guide pipes and hoses must be free of oil and grease before installing.

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

To mount the charge hoses on their connectors securely, spray the bolts on the used clamps with rust remover before installing.

When replacing the cylinder head or cylinder head seal, all of the coolant and engine oil must be replaced.

-- Align the marking on the toothed belt camshaft pulley with the marking on the toothed belt guard -top arrow-.

Fig 2: Bringing Camshaft Gear To Marking For TDC Cylinder 1

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The cams -A- on both camshafts are symmetrical to each other.

Fig 3: Bringing Marking On Camshaft Gear To Alignment With Marking On Toothed Belt Guard
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The notches -arrows- on both camshafts must align.

-- Clean the sealing surfaces; they must be free of oil and grease.

-- Make sure the crankshaft is still at "TDC" and then turn it back 45° opposite the engine rotation.

-- Set cylinder head gasket in place.

Fig 4: Identifying Cylinder Block Centering Pins

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Installed position: It must be possible to read the part number.
Note the sleeves in the cylinder block.

-- Set cylinder head in place.

-- Tighten the cylinder head bolts. Refer to Figure.

NOTE:

Do not tighten cylinder head bolts after repairs.

-- Install cylinder head cover. Refer to CYLINDER HEAD COVER .

-- Rotate the crankshaft back to "TDC".

-- Install toothed belt (adjust timing) INSTALLING (ADJUSTING VALVE TIMING) .

-- Install the intake manifold support and throttle valve control module -J338-. Refer to Removal and Installation .

-- Tighten the oil dipstick guide tube. Refer to Fig 5.

Fig 5: Identifying Oil Dipstick Guide Tube - Tightening Specifications

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-- Install the air guide pipe. Refer to CHARGE AIR COOLER OVERVIEW .

-- Install the right front coolant pipe. Refer to RIGHT FRONT COOLANT PIPE .

-- Install the turbocharger. Refer to TURBOCHARGER .

-- Install fan shroud. Refer to FAN SHROUD .

-- Electrical connections and routing. Refer to Wiring Diagram.

-- Change engine oil. Refer to ENGINE OIL LEVEL, CHECKING

-- Replace coolant. Refer to COOLING SYSTEM, DRAINING AND FILLING .