11 31 038 Removing and installing/replacing right exhaust camshaft (N62): Installation

Installation of exhaust camshaft is described separately from removal.

Clean all bearings and cams of exhaust camshaft and lubricate with engine oil.

NOTE: Camshaft has a groove and sensor gear has a lug for fastening purposes.

Fig 1: Identifying Camshaft Groove

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Fit sensor gear (1) and align to groove in camshaft.

Insert screw (2) and tighten down.

Tightening torque of screw (2), see ENGINE - TIGHTENING TORQUES .

Fig 2: Fitting Sensor Gear And Aligning To Groove In Camshaft

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Installing compression rings (1):

CAUTION: Plain compression rings (1) can easily break.

Carefully pull compression ring (1) apart and install from front.

Press compression ring (1) on one side into groove, install catch on other side.

Fig 3: Installing Compression Rings

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NOTE: Rocker arms (1) of exhaust camshaft are of same design as rocker arms of inlet camshaft.

The classification 3 shown in the illustration has no affect on the function on the exhaust camshaft.

Fig 4: Identifying Rocker Arms Classification Number

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CAUTION: Rocker arms (1) slip slightly when exhaust camshaft is fitted.
Make sure rocker arms (1) are secured as illustrated on hydraulic valve clearance compensating elements and on valves.

Used rocker arms (1) may only be reused in the same position.

Align rocker arms (1) straight.

Fig 5: Securing Rocker Arms On Hydraulic Valve Clearance Compensating Elements

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Lubricate exhaust camshaft and bearing caps with engine oil.

Install exhaust camshaft (1).

Rotate exhaust camshaft (1) until exhaust cam on cylinder 2 is facing upwards.

Fig 6: Installing Exhaust Camshaft

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Check adapter sleeves (2) for damage and correct installation position.

Ends of compression rings (1) point upwards.

Make sure compression rings (1) are engaged at ends.

Fig 7: Checking Adapter Sleeves For Damage

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CAUTION: Do not mix up the camshaft bearing covers of cylinders 1 to 4 and 5 to 8.

NOTE: Bearing caps of exhaust camshaft are marked on cylinder bank 1 to 4 with L A1 to L A5 from inlet side.

Fit bearing caps L A2 to L A5.

Fig 8: Fitting Bearing Caps

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NOTE: Retaining clips (1) for oil line are fitted on bearing caps 3 and 5.

Insert nuts and tighten by hand without play.

Tighten down nuts on bearing caps L A2 to L A5 in 1/2 turn increments evenly from inside to outside.

Tightening torque, see ENGINE - TIGHTENING TORQUES .

Fig 9: Fitting Retaining Clips For Oil Line On Bearing Caps

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CAUTION: Do not mix up the camshaft bearing covers of cylinders 1 to 4 and 5 to 8.

Fit bearing cap L A1 in such a way that marking is legible from inlet side.

Install nuts and tighten down.

Tightening torque, see ENGINE - TIGHTENING TORQUES .

Fig 10: Fitting Bearing Cap L A1

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NOTE: A gasket (2) is installed between cylinder head and slide rail (1).

Replace gasket (2) and preinstall on slide rail (1).

Fig 11: Replacing Gasket And Preinstall On Slide Rail

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Install slide rail (1) with gasket, insert screw and tighten down.

Fig 12: Installing Slide Rail With Gasket

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Rotate exhaust camshaft against direction of rotation until cam on 1st cylinder points upwards at an angle as shown in illustration.

Fig 13: Rotating Exhaust Camshaft Against Direction Of Rotation Until Cam On 1st Cylinder Points Upwards At An Angle

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Install inlet and exhaust adjustment unit on right side.

Install spark plugs on cylinder bank 1 to 4.

Install right cylinder head cover.

Install ignition coils on cylinder bank 1 to 4. See IGNITION COIL .

Assemble engine.