11 31 032 Removing And Installing/Replacing Left Inlet Camshaft (N62 To 9/03): Installation

WARNING: This page is about a different car, the 2008 BMW Alpina and 2007 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.

Installation of inlet camshaft is described separately from removal.

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

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

Fig 1: Identifying Camshaft Sensor Gear Groove

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

Insert screw (2) and tighten down.

Tightening torque. See ENGINE - TIGHTENING TORQUES -- ALPINA .

Fig 2: Identifying Sensor Gear And Screw

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Installing compression rings (1):

IMPORTANT: 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: Identifying Compression Ring Groove

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Insert inlet camshaft (1) so that cams point upwards at cylinder 5 as shown in illustration.

Fig 4: Identifying Inlet Camshaft

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Make sure bearing shells (1) of eccentric shaft are engaged in bearing bracket.

NOTE: Bearing shell (1) is guided in a groove in bearing cap.

Fig 5: Identifying Bearing Shell Groove

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

Fig 6: Identifying Dowel Sleeves

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NOTE: Bearing caps are marked as illustrated with R E2 to R E5.

Fit bearing caps R E2 to R E5.

Fig 7: Identifying Bearing Caps Numbers

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NOTE: Initially tighten special tool 11 9 473 without play only.

Secure bearing bracket and bearing cap with nut (special tool 11 9 473).

Fig 8: Identifying Special Tool (11 9 473)

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NOTE: The mounting of the bearing bracket described later can only be performed if the first bearing of the inlet camshaft is aligned with special tool 11 9 472.

Fit special tool 11 9 472 as shown in illustration and align inlet camshaft.

Fig 9: Identifying Special Tools

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Fit centering sleeves (special tool 11 9 475 ) and align special tool 11 9 472 to bearing caps 2 and 3.

Fig 10: Identifying Special Tools

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Insert special tool 11 9 474 and initially tighten without play.

NOTE: Special tools 11 9 472 / 11 9 474 and 11 9 475 remain fitted until all torsion springs and intermediate levers have been installed.

Fig 11: Identifying Special Tools

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NOTE: Installation of the intermediate levers and torsion springs is described on the 8th cylinder. The same procedure is applicable to cylinders 5 to 7.

Attach special tool 11 9 490 to ends of torsion spring.

Install torsion spring (1).

Fig 12: Identifying Torsion Spring And Special Tool (11 9 490)

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Insert screw (1) and tighten down.

Fig 13: Identifying Screw

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IMPORTANT: Intermediate levers (2) are divided into individual tolerance classes.
Only intermediate levers of the same tolerance class may be fitted in a single engine.
The tolerance classes are designated as illustrated with the numbers from 1 to 5.
Used intermediate levers (2) may only be reused in the same position.

Lubricate all sliding surfaces on intermediate lever (2) with engine oil.

Fig 14: Identifying Intermediate Levers

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Raise torsion spring (1) with special tool 11 9 480.

Detach special tool 11 9 490.

Fig 15: Identifying Special Tools

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Hold torsion spring (1) with special tool 11 9 480.

Install intermediate lever (2) from above.

Insert end of torsion spring (1) into guide on intermediate lever (2).

Fig 16: Identifying Torsion Spring With Special Tool (11 9 480)

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Raise second end of torsion spring with special tool 11 9 480.

Detach special tool 11 9 490.

Fig 17: Identifying Special Tool On Torsion Spring

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Hold torsion spring (1) with special tool 11 9 480.

Install intermediate lever (2) from above.

Insert end of torsion spring (1) into guide on intermediate lever (2).

Fig 18: Identifying Torsion Spring And Intermediate Lever

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Install eccentric shaft sensor (2).

Insert screws and tighten down eccentric shaft sensor (2).

Fig 19: Identifying Eccentric Shaft Sensor

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Remove special tool 11 9 474.

Fig 20: Identifying Special Tool (11 9 474)

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Remove special tool 11 9 472 and special tool 11 9 475.

Fig 21: Identifying Special Tools (11 9 472) And (11 9 475)

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Ends of compression rings (1) point upwards.

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

Fig 22: Identifying Ends Of Compression Rings Point

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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.

Fig 23: Identifying Rocker Arms

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Remove special tool 11 9 473.

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

Fig 24: Identifying Bearing Bracket

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IMPORTANT: Do not tilt bearing bracket (1).

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

Insert nuts and tighten by hand without play.

Fig 25: Identifying Bearing Bracket Nuts

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

Tighten down nuts from inside to outside.

Tightening torque. See ENGINE - TIGHTENING TORQUES -- ALPINA .

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

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

Install nuts and tighten down.

Tightening torque. See ENGINE - TIGHTENING TORQUES -- ALPINA .

Fig 26: Identifying Bearing Cap Number

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

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

Fig 27: Identifying Pretension Torsion Spring With Cable Strap

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

Fig 28: Rotating Eccentric Shaft

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Rotate inlet camshaft in direction of rotation until cam on 5th cylinder points upwards at an angle as shown in illustration.

Fig 29: Identifying Camshaft Lobe

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Install inlet and exhaust adjustment unit on left side. See 11 36 047 REMOVING AND INSTALLING/REPLACING INLET AND EXHAUST ADJUSTMENT UNITS ON LEFT SIDE (N62/N62TU) .

Install spark plugs on cylinder bank 5 to 8.

Install left cylinder head cover. See 11 12 005 REMOVING AND INSTALLING/SEALING LEFT CYLINDER HEAD COVER (N62/N62TU) .

Install ignition coils on cylinder bank 5 to 8.

Install servomotor for left eccentric shaft. See 11 37 022 REMOVING AND INSTALLING/REPLACING SERVOMOTOR FOR LEFT ECCENTRIC SHAFT (N62/N62TU) .

Assemble engine.