11 31 051 Replacing both timing chains (S65)

WARNING: This page is about a different car, the 2011 BMW M3, 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove all VANOS gears . See 1136142 REMOVING AND INSTALLING/REPLACING LEFT INLET VANOS GEAR (S65) ; 1136144 REMOVING AND INSTALLING/REPLACING LEFT EXHAUST VANOS GEAR (S65) ; 1136148 REMOVING AND INSTALLING/REPLACING RIGHT INLET VANOS GEAR (S65) or 1136150 REMOVING AND INSTALLING/REPLACING RIGHT EXHAUST VANOS GEAR (S65) .
Remove RADIAL SHAFT SEAL at front.
Remove OIL PUMP .
Remove OIL RETURN PUMP .
Remove OIL FILTER HOUSING .

Release screw plug (1) on bank 1.

Tightening torque: 11 12 4AZ .

Fig 1: Identifying Screw Plug

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Release screw plugs (1).

Tightening torque: 11 11 6AZ .

Release screw (2).

Remove intermediate piece (3) without gearwheel towards front.

IMPORTANT: Gearwheel can fall out.

Fig 2: Identifying Screw Plugs, Screw And Intermediate Piece

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Arrangement of gearwheel and intermediate piece

Gearwheel (1) with dowel pin.

Intermediate piece (2).

Central bolt (3).

Fig 3: Identifying Intermediate Piece, Gearwheel And Central Bolt

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NOTE: Bearing pin (1) is only inserted.

Bearing pin (2) for two tensioning rails.

Remove bearing pin with special tool 11 5 290.

Tightening torque: 11 31 2AZ .

Fig 4: Removing Bearing Pin

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NOTE: Bearing pin (1) is only inserted.

Screw in special tool 11 5 292 at bearing pin (1) and pull out.

Fig 5: Removing Bearing Pin

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Remove bearing pin with special tool 11 5 290.

Tightening torque: 11 31 2AZ .

Fig 6: Identifying Bearing Pin

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Arrangement of both timing chains

Timing chain, bank 2.
Timing chain, bank 2.
Guide rail, bank 1.
Timing chain, bank 1.
Tensioning rail, bank 1.
Bearing pin, inserted type.
Bearing pin for two tensioning and guide rails.
Bearing pin, screwed type.
Guide rail, bank 2.

Fig 7: Identifying Tensioning Rail, Bank 1, Timing Chain, Bank 1 And Guide Rail, Bank 1

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Remove timing chain, bank 2.

Remove timing chain, bank 1.

Fig 8: Removing Timing Chain, Bank 1

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Assemble engine.