11 31 051 Replacing both timing chains (S85)

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2010 BMW M6, 2010 BMW M5, 2009 BMW M6, 2009 BMW M5, and 2008 BMW M6. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove cylinder head cover on left and right .
Remove VANOS gear.
Remove oil sump .
Remove oil pump .
Remove VANOS high-pressure pump .
Remove vibration damper .
Remove radial shaft seal at front .

Release central screw (1). Remove gear (2) towards front.

Fig 1: Remove Gear (2) Towards Front

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Remove special tool 11 5 352. Remove timing chain, cylinders 6 to 10, towards bottom.

Fig 2: Remove Special Tool 11 5 352 And Remove Timing Chain, Cylinders 6 To 10, Towards Bottom

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Remove special tool 11 5 351. Remove timing chain, cylinders 1 to 5, towards bottom.

Fig 3: Remove Special Tool 11 5 351 And Remove Timing Chain, Cylinders 1 To 5, Towards Bottom

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NOTE: Check tensioning and slide rails for wear, replace if necessary. Assemble engine.