11 33 517 Removing and installing/replacing rocker arms on right inlet side (N62 to 9/03): Installation

Installation of rocker arms is described separately from removal.

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

Ends of compression rings (1) point upwards.

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

Fig 1: Identifying Compression Rings

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Install rocker arms (1) on inlet side.

Fig 2: Installing Rocker Arms

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IMPORTANT: Rocker arms (1) slip slightly when bearing bracket is fitted.

Make sure rocker arms (1) are secured as illustrated on hydraulic valve clearance compensating elements and on valves.

Align rocker arms (1) straight.

Remove special tool 11 9 473.

Fig 3: Removing Bearing Bracket From Special Tool

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Remove bearing bracket (1) from special tool 11 9 470.

IMPORTANT: Do not tilt bearing bracket (1).

Lower bearing bracket (1) from above and carefully bring into contact with cylinder head.

Fig 4: Lowering Bearing Bracket

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Insert nuts and tighten by hand without play.

IMPORTANT: Make sure none of the intermediate levers or rocker arms have slipped out.

Tighten down nuts from inside to outside.

Tightening torque, 11 31 1AZ. Refer to ENGINE - TIGHTENING TORQUES .

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

Fit bearing cap L E1 in such a way that marking is legible from inlet side.

Fig 5: Identifying Bearing Cap Marking

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Install nuts and tighten down.

Tightening torque, 11 31 1AZ. Refer to ENGINE - TIGHTENING TORQUES .

Rotate eccentric shaft at dihedral head as illustrated in order to reduce tension on torsion spring (1).

Fig 6: Rotating Eccentric Shaft At Dihedral Head

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Pretension torsion spring (1) with a cable strap (2) and carefully fit on roller (3).

Rotate eccentric shaft at dihedral head as shown in illustration back to minimum stroke position.

Fig 7: Rotating Eccentric Shaft Back To Minimum Stroke Position

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Rotate inlet camshaft at hexagon head against direction of rotation until cam on 1st cylinder points downwards at an angle as shown in illustration.

Fig 8: Rotating Inlet Camshaft At Hexagon Head

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Install spark plugs on cylinder bank 1 to 4.

Install ignition coils on cylinder bank 1 to 4.

Assemble engine.