Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSBMW2007X3 STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROL SYSTEMSENGINE - REPAIR (N52)CAMSHAFT11 31 505 ADJUSTING TIMING OF CAMSHAFT(S) (N52K)

2007 BMW X3 Standard

11 31 505 Adjusting timing of camshaft(s) (N52K)

2007 BMW X3 StandardSECTION 11 31 505 Adjusting timing of camshaft(s) (N52K)

Special tools required:

00 9 120 TORQUE ANGLE MEASURING DIAL
00 9 250 TORSION ANGLE WRENCH WITH FLEXIBLE EXTENSION
11 0 300
11 4 280
11 4 281
11 4 282
11 4 283
11 4 290
11 9 340

Necessary preliminary tasks:

Remove cylinder head cover

Remove fastener (1) in direction of arrow.

Installation:

Install fastener (1) with bore facing outwards.

Fig 1: Fastener

Courtesy of BMW OF NORTH AMERICA, INC.

Rotate crankshaft at central bolt into TDC position.

Slide special tool 11 0 300 in direction of arrow into special tool bore and secure crankshaft.

IMPORTANT: On vehicles with optional extra SA205 (automatic transmission), there is a large bore for the TDC position shortly before the special tool bore. This bore can be confused with the special tool bore.

If the flywheel is secured in the correct special tool bore with special tool 11 0 300 , the engine can no longer be moved at the central bolt.

Fig 2: Securing Crankshaft Using Special Tool (11 0 300)

Courtesy of BMW OF NORTH AMERICA, INC.

With 1st cylinder in firing TDC position, cams of inlet camshaft (1) at 1st cylinder point upwards at an angle.

Fig 3: Inlet Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

Part numbers (2) on inlet and exhaust camshafts (1) point upwards.

Fig 4: Part Numbers On Inlet And Exhaust Camshafts

Courtesy of BMW OF NORTH AMERICA, INC.

With 1st cylinder in firing TDC position, cams of exhaust camshaft (3) at 6th cylinder point downwards at an angle.

Cam follower (1) is not actuated.

NOTE: When the engine is installed, the position of the exhaust camshaft (3) for the timing can only be checked with a mirror.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.