11 36 010 Removing and installing or replacing double VANOS adjustment unit (M52TU / M54 / M56): Installation:

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Installation of double VANOS adjustment unit is described separately from removal. Assembly sequence for removal and installation is different.

Check dowel sleeves (1) for damage and correct installation position.

Fig 1: Checking Dowel Sleeves

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Keep sealing faces clean and free of oil. Apply a thin and even coat of sealing compound Drei Bond 1209 (refer to BMW Parts Service) to contact surface edges of separating face between cylinder head and double VANOS adjustment unit.

Replace seal.

Install and secure double VANOS adjustment unit.

Fig 2: Installing Double VANOS Adjustment Unit

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Attach plug connections of camshaft sensor and solenoid valves on exhaust and inlet sides.

Fig 3: Attaching Plug Connections

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IMPORTANT: Left-hand threads.

Insert fitting screws for hydraulic piston on toothed shaft on inlet and exhaust sides and tighten down.

Fig 4: Inserting Fitting Screws

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Tightening torque 11 36 4AZ. Refer to ENGINE - TIGHTENING TORQUES .

Replace sealing caps and install with special tool 11 6 170 or with commercially available short flat nose pliers.

E85:

Use commercially available offset flat nose pliers.

Fig 5: Installing Sealing Caps With Special Tool

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Insert screw plugs with new sealing rings and tighten down.

Fig 6: Inserting Screw Plugs With Sealing Rings

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Tightening torque 11 36 3AZ. Refer to ENGINE - TIGHTENING TORQUES .

Fit suspension lug.

Fig 7: Fitting Suspension Lug

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NOTE: If the double VANOS adjustment unit has been replaced, you must check and, if necessary, adjust the camshaft timing.
If work has been carried out which has "no" effect on the timing and it is assured that the timing adjustment is correct, the timing check described in the following does not have to be conducted.

IMPORTANT: Cylinder for chain tensioning piston is under spring pressure.

Remove cylinder for chain tensioning piston.

Fig 8: Removing Cylinder For Chain Tensioning Piston

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Insert special tool 11 4 220 in cylinder head and bring adjustment screw into contact with tensioning rail.

Fig 9: Inserting Special Tool In Cylinder Head

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Preload tensioning rail with special tool 11 4 220 by rotating adjusting screw with special tool 00 9 250 or standard torque wrench to 0.7 N.m.

Fig 10: Rotating Adjusting Screw

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Pull special tool 11 2 300 back until flywheel is no longer secured in position.

Fig 11: Pulling Special Tool Back

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Remove special tool 11 3 240.

Fig 12: Removing Special Tool

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IMPORTANT: Cover double VANOS adjustment unit; when the compressed air supply is connected, several drops of oil are sprayed out of the bore.

Fig 13: Covering Double VANOS Adjustment Unit

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Connect compressed air (2 to 8 bar).

Fig 14: Connecting Compressed Air

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With compressed air supply connected, crank engine twice in direction of rotation until cam tips on inlet and exhaust camshafts on 1st cylinder face each other.

Fig 15: Identifying Camshafts Position

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Secure crankshaft with special tool 11 2 300 in TDC position of 1st cylinder.

Fig 16: Securing Crankshaft

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IMPORTANT: Do not turn the engine back.

Remove special tool 11 2 300 before switching on the engine.

Check camshaft setting:

Fit special tool 11 3 240 to camshafts.

Fig 17: Fitting Special Tool To Camshafts

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NOTE: The timing is correctly set if the special tool 11 3 240 rests without a gap on the cylinder head or protrudes up to 1 mm to the inlet side.
The timing must be reset if the special tool 11 3 240 protrudes to the exhaust side.

Fig 18: View Of Correct Camshaft Timing