11 31 032 Removing and installing/replacing left inlet camshaft (N62 to 9/03)

NOTE:

For Special Tool identification, see ENGINE- SPECIAL TOOLS - 5-SERIES (E60) .

Special Tools Required:

11 9 470
11 9 472
11 9 473
11 9 474
11 9 475
11 9 480
11 9 490

(Cylinder Bank 5 To 8)

Removal:

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

Remove ignition coils on cylinder bank 5 to 8.

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

Remove spark plugs on cylinder bank 5 to 8.

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

IMPORTANT: The inlet camshaft must first be rotated so that when the bearing bracket is removed the intermediate levers do not slip out and damage the camshaft.

Rotate inlet camshaft against direction of rotation until lettering (1) on 8th cylinder points upwards in cylinder axis and cam is horizontal.

Fig 1: Identifying Lettering On Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.

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), feed out from roller (3) and carefully relieve tension.

Fig 2: Aligning Eccentric Shaft

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 3: Aligning Eccentric Shaft To Minimum Stroke Position

Courtesy of BMW OF NORTH AMERICA, INC.

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

NOTE: Bearing caps of inlet camshaft are marked on cylinder bank 5 to 8 with R E1 to R E5 from inlet side.

Release nuts and remove bearing cap R E1.

Fig 4: Identifying Bearing Cap R E1

Courtesy of BMW OF NORTH AMERICA, INC.

Release 8 nuts of bearing bracket (1) from outside to inside.

Fig 5: Locating Nuts Of Bearing Bracket

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Rocker arms are freely accessible after bearing bracket has been removed. Do "not" remove rocker arm (1) on inlet side.

IMPORTANT: Rockers arms (1) are divided into individual tolerance classes. The tolerance classes are designated as illustrated with the numbers from 1 to 4. Used rocker arms (1) may only be reused in the same position.

When replacing rocker arms (1) on inlet side: install rocker arms of the same tolerance class in the same position.

Fig 6: Identifying Rocker Arm

Courtesy of BMW OF NORTH AMERICA, INC.

Clamp special tool 11 9 470 as illustrated in a vise.

Fig 7: Clamping Special Tool In Vise

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Do not tilt bearing bracket (1).

Carefully lift out bearing bracket (1).

Fig 8: Identifying Bearing Bracket

Courtesy of BMW OF NORTH AMERICA, INC.

Place bearing bracket (1) with inlet camshaft and eccentric shaft as illustrated on special tool 11 9 470.

Secure bearing bracket (1) with a nut (special tool 11 9 473).

Fig 9: Securing Bearing Bracket With Nut

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: The lower section of the bearing bracket (1) is machined with the cylinder head and must not be mixed up.

NOTE: Lower section of bearing bracket (1) remains on cylinder head.

Fig 10: Identifying Lower Section Of Bearing Bracket

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: This work step will only be necessary if after the inlet camshaft has been removed the eccentric shaft is also to be removed.

If necessary, remove eccentric shaft sensor (2).

Fig 11: View Of Eccentric Shaft Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

Lift out intermediate lever (2) and set down in an orderly fashion.

IMPORTANT: Keep holding torsion spring (1) with special tool 11 9 480.

Fig 12: Identifying Torsion Spring And Intermediate Lever

Courtesy of BMW OF NORTH AMERICA, INC.

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

Support end of torsion spring protected with special tool 11 9 490 on inlet camshaft.

Fig 13: Attaching Special Tool To End Of Torsion Spring

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Intermediate levers (2) are divided into individual tolerance classes. Only intermediate levers of the same tolerance class may be fitted in a single cylinder head. 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.

Fig 14: Identifying Intermediate Levers

Courtesy of BMW OF NORTH AMERICA, INC.

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

Lift out intermediate lever (2) and set down in an orderly fashion.

IMPORTANT: Keep holding torsion spring (1) with special tool 11 9 480.

Fig 15: Retaining Torsion Spring With Special Tool 11 9 480

Courtesy of BMW OF NORTH AMERICA, INC.

Attach special tool 11 9 490 to second end of torsion spring.

Support end of torsion spring protected with special tool 11 9 490 on inlet camshaft.

Fig 16: Attaching Holding Sleeve To End Of Torsion Spring

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Fig 17: Locating Retaining Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Remove torsion spring (1) and special tool 11 9 490.

Fig 18: Removing Torsion Spring And Holding Sleeve

Courtesy of BMW OF NORTH AMERICA, INC.

Remove the intermediate levers and torsion springs of cylinders 5 to 7 according to the same procedure and set down in an orderly fashion.

Unscrew nut (special tool 11 9 473).

Fig 19: Identifying Knurled Nut (Special Tool 11 9 47

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Camshaft bearing caps of cylinders 1 to 4 and 5 to 8 must not be mixed up.

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

Remove bearing caps R E2 to R E5 and place to one side in order.

Fig 20: Locating Bearing Caps R E2 To R E5

Courtesy of BMW OF NORTH AMERICA, INC.

Lift out inlet camshaft (1).

Fig 21: View Of Inlet Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Further tasks:

The article removing and installing left eccentric shaft contains important installation instructions. Refer to 11 37 006 REMOVING AND INSTALLING/REPLACING LEFT ECCENTRIC SHAFT (N62 FROM 9/03 AND N62TU) .

If necessary, replace plain compression rings (1).

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

Plain compression rings (1) are engaged at joint.

Press compression ring (1) on one side into groove, pull up on other side and remove catch.

Carefully pull compression ring (1) apart and remove towards front.

Fig 22: Identifying Plain Compression Rings

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Inlet camshaft of cylinder bank 5 to 8 is marked with "EIN 58".

If necessary, replace sensor gear (1).

Release screw (2) and remove sensor gear (1).

Installation:

Installation of inlet camshaft is described separately from removal.

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

Fig 23: View Of Sensor Gear

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 24: Identifying Camshaft Groove

Courtesy of BMW OF NORTH AMERICA, INC.

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

Insert screw (2) and tighten down.

Tightening torque, refer to of screw (2) 11 31 14AZ in ENGINE - TIGHTENING TORQUES - 545I (4.4L) E60 .

Fig 25: Aligning Sensor Gear To Groove In Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

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 26: Installing Compression Rings

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 27: Aligning Inlet Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

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 28: Identifying Bearing Shell

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 29: Locating Dowel Sleeves

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fit bearing caps R E2 to R E5.

Fig 30: View Of Bearing Caps

Courtesy of BMW OF NORTH AMERICA, INC.

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 31: Securing Bearing Bracket Using Knurled Nut

Courtesy of BMW OF NORTH AMERICA, INC.

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 32: Aligning Inlet Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 33: Identifying Centering Sleeves

Courtesy of BMW OF NORTH AMERICA, INC.

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 34: View Of Special Tool 11 9 474

Courtesy of BMW OF NORTH AMERICA, INC.

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 35: Attaching Holding Sleeves To Ends Of Torsion Spring

Courtesy of BMW OF NORTH AMERICA, INC.

Insert screw (1) and tighten down.

Fig 36: Installing Retaining Screw

Courtesy of BMW OF NORTH AMERICA, INC.

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 37: Identifying Intermediate Levers

Courtesy of BMW OF NORTH AMERICA, INC.

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

Detach special tool 11 9 490.

Fig 38: Raising Torsion Spring With Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.

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 39: Holding Torsion Spring With Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.

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

Detach special tool 11 9 490.

Fig 40: Raising Second End Of Torsion Spring

Courtesy of BMW OF NORTH AMERICA, INC.

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 41: Holding Torsion Spring With Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.

Install eccentric shaft sensor (2).

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

Fig 42: Installing Eccentric Shaft Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

Remove special tool 11 9 474.

Fig 43: View Of Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 44: Removing Special Tools 11 9 472/11 9 475

Courtesy of BMW OF NORTH AMERICA, INC.

Ends of compression rings (1) point upwards.

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

Fig 45: Aligning Ends Of Compression Rings

Courtesy of BMW OF NORTH AMERICA, INC.

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 46: Aligning Rocker Arms

Courtesy of BMW OF NORTH AMERICA, INC.

Remove special tool 11 9 473.

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

Fig 47: View Of Bearing Bracket In Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.

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.

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

Tighten down nuts from inside to outside.

Tightening torque, refer to 11 31 1AZ in ENGINE - TIGHTENING TORQUES - 545I (4.4L) E60 .

Fig 48: Locating Nuts Of Bearing Bracket

Courtesy of BMW OF NORTH AMERICA, INC.

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, refer to 11 31 1AZ in ENGINE - TIGHTENING TORQUES - 545I (4.4L) E60 .

Fig 49: Identifying Bearing Cap R E1

Courtesy of BMW OF NORTH AMERICA, INC.

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 50: Aligning Eccentric Shaft

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 51: Aligning Eccentric Shaft To Minimum Stroke Position

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 52: View Of Inlet Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

Install inlet and exhaust adjustment unit on left side. Refer to 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. Refer to 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. Refer to 11 37 022 REMOVING AND INSTALLING/REPLACING SERVOMOTOR FOR LEFT ECCENTRIC SHAFT (N62/N62TU) .

Assemble engine.