Tightening the VANOS central valve of the exhaust camshaft adjuster

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Have the special tool 0 496 855 ready.

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Have the special tool 2 450 487 ready.

Courtesy of BMW OF NORTH AMERICA, INC.
Have the special tool 2 469 138 ready.

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Have the commercially available torque wrench (1) ready.

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Have all the special tools and standard tools ready.

Number	Description
1	Standard torque wrench
2	Wrench socket set 2 450 487
3	Reversible ratchet 0 496 855
4	Commercially available reduction
5	adapter 2 469 138

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Assemble all the special tools and standard tools as shown.

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NOTE: The figure shows the rear of the engine.

Tighten the VANOS central valve (1) of the exhaust camshaft adjuster.

TIGHTENING TORQUES SPECIFICATION

VANOS central valve to camshaft
M21	VANOS central valve on the thread and on the contact surface must be coated with engine oil.	1. Tightening torque	50 Nm
		2. Tightening torque	140 Nm
M22	VANOS central valve on the thread and on the contact surface must be coated with engine oil.	1. Tightening torque	50 Nm
		2. Tightening torque	115 Nm

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Follow-up work

Refer to DISASSEMBLING ALL SPECIAL TOOLS .
Refer to INSTALLING CHAIN TENSIONER .
Refer to CHECKING THE TIMINGS OF THE CAMSHAFT .
Refer to INSTALLING THE HEAT SHIELD ON THE CYLINDER HEAD .
Refer to INSTALLING THE HOLDER OF THE POSITIVE BATTERY CABLE .