11 12 105 Removing And Installing Left Cylinder Head (S85)

Special tools required: 

• 11 5 210
• 11 5 220
• 11 5 352

Necessary preliminary tasks: 

• Remove EXHAUST SYSTEM .
• Remove left exhaust manifold. See 18 40 010 REMOVING AND INSTALLING/REPLACING LEFT EXHAUST MANIFOLD (S85)
• Unfasten engine wiring harness and lay to one side.
• Remove left cylinder head cover .
• Remove left inlet camshaft .
• Remove left exhaust camshaft .

Attach special tool 11 5 220.

Insert special tool 11 5 210.

Unclip linkage (1).

Fig 1: Identifying Special Tool 11 5 220 And 11 5 210

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Detach hoses (2) from holder (1).

Fig 2: Identifying Hoses And Holder

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Release screws (1).

Fig 3: Identifying Screws

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Cylinder head bolt (1) with shim.

Fig 4: Identifying Cylinder Head Bolt

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Do not remove special tool 115 352.

Release cylinder head bolts from outside to inside in sequence (12 to 1).

Fig 5: Left Cylinder Head Bolts Tightening/Loosening Sequence

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Installation: 

Fit new cylinder head screws.

Tighten down cylinder head bolts from inside to outside in sequence (1 to 12).

Tightening torque 11 12 1AZ. See CYLINDER HEAD WITH COVER .

Fig 6: Left Cylinder Head Bolts Tightening/Loosening Sequence

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Insert screws (1).

Tightening torque 11 12 1AZ. See CYLINDER HEAD WITH COVER .

Fig 7: Identifying Screws

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Installation: 

Modifying check valves, refer to memory entries in DME.

In engines where it is not possible to connect check valves, replace the vacuum-controlled check valves with self-opening check valves.

Vacuum lines will then no longer be required.

Fig 8: Identifying Check Valve

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Assemble engine.