11 31 025 Removing and installing or replacing the intake camshaft (M57T2-SCR)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

Necessary preliminary work:

REMOVE CYLINDER HEAD COVER

Crank engine at crankshaft with special tool 11 6 480 .

The cams on the intake camshaft at the 1st cylinder point downwards.

Release screw (1).

NOTE: Bolt (1) must be removed beforehand as it is no longer accessible in TDC setting.

Camshaft sprocket classification (0) value from 0 to 9

Tightening torque: 11 31 1AZ .

Fig 1: Identifying Intake Camshaft Screw

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Unscrew the screw plug in the gear case cover at bottom.

Fig 2: Locating Screw Plug In Gear Case Cover

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IMPORTANT: No piston is permitted to be in the TDC setting Risk of damage .
Crank engine back at crankshaft through 45°.

Turn exhaust camshaft at hexagon head in direction of arrow.

The hydraulic chain tensioner can be secured in place in this position with special tool 11 3 340 .

Fig 3: Turning Exhaust Camshaft At Hexagon Head

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NOTE: The hydraulic chain tensioner is forced back by rotating the exhaust and intake camshafts.

Lock hydraulic chain tensioner with special tool 11 3 340 .

NOTE: If the camshaft sprocket is removed without the hydraulic chain tensioner being locked, the chain tensioner piston will slip out and can then only be pressed back again with a considerable amount of effort.

Fig 4: Identifying Hydraulic Chain Tensioner With Special Tool (11 3 340)

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Remove protective cap in direction of arrow.

Installation note:

Reinstall protective cap with some grease.

Fig 5: Removing Protective Cap

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Crank engine at crankshaft with special tool 11 6 480 .

Secure crankshaft at flywheel with special tool 11 6 080 .

Fig 6: Identifying Special Tool (11 6 080)

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Release camshaft sprocket bolts (1).

Tightening torque: 11 31 1AZ .

Release bearing journal (2) of guide rails.

Fig 7: Identifying Camshaft Sprocket Bolts

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Release camshaft sprocket with chain (1) from intake camshaft in direction of arrow.

Release guide rail (2) from bracket and pull out in direction of arrow.

Fig 8: Releasing Guide Rail From Bracket

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Remove camshaft sprocket (2) in direction of arrow to right from timing chain (3) and remove towards top.

Fig 9: Removing Camshaft Sprocket From Timing Chain

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Loosen screws (1) of intake camshaft bearing cap in 1/2 revolution increments evenly from outside to inside.

NOTE: Illustration shows M57TU.

Fig 10: Identifying Intake Camshaft Bearing Cap Screws

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Remove bearing caps of intake camshaft and lift out intake camshaft (1).

All bearing caps are marked.

E= intake camshaft.

A = exhaust camshaft.

Fig 11: Removing Bearing Caps Of Intake Camshaft

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NOTE: Worn rocker arms may only be reused on the same grooves of the camshaft.

Fig 12: Identifying Worn Rocker Arms On Grooves Of Camshaft

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IMPORTANT: These screws must "not" be removed.

Fig 13: Identifying Screws

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NOTE: E Intake camshaft
A Exhaust camshaft

Fig 14: Identifying Intake/Exhaust Camshafts

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Insert intake camshaft.

Position (1) of intake camshaft gear flush with cylinder head.

Position (2) of exhaust camshaft gear flush with cylinder head.

If necessary, re-secure camshafts.

Fig 15: Identifying Intake Camshaft With Cylinder Head Mark

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Mark (1) on intake camshaft must be between marks (2) on exhaust camshaft.

See Fig 16.

Fig 16: Identifying Intake Camshaft Gear Mark

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The intake camshaft bearing caps are legibly marked E 1... E 7 from the exhaust side.

Fit bearing caps.

Fig 17: Identifying Intake Camshaft Bearing Cap Mark

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Insert all screws (1) and initially tighten so that they are free of play.

Tighten down intake camshaft bearing caps in 1/2 revolution increments evenly from inside to outside.

Fig 18: Identifying Intake Camshaft Bearing Cap Screws

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Mount camshaft sprocket and release chain tensioner.

Cams of both camshafts must point to top right.

Fit special tool 11 6 321 on intake camshaft.

Secure special tool 11 6 321 with special tool 11 6 322 .

Installation note:

The exhaust camshaft only has to be checked, setting is not possible.

Fig 19: Locating Special Tool 11 6 321 On Intake Camshaft

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Secure special tool 11 6 254 on the cylinder head with screws (1).

NOTE: See Fig 20.

Fig 20: Identifying Special Tool 11 6 254 On Cylinder Head With Screws

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Check intake camshaft side clearance.

Set up special tool 11 6 252 with dial gauge.

Refer to TECHNICAL DATA .

Procedure for exhaust camshaft is identical.

Fig 21: Setting Special Tool 11 6 250 With Dial Gauge

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Adjust VALVE TIMING .

Assemble engine.