11 31 011 Replacing left camshafts (S62)

WARNING: This page is about a different car, the 2003 BMW Z8, 2002 BMW Z8, 2001 BMW Z8, and 2000 BMW Z8. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 2 300
11 7 120
11 7 130
11 7 140
11 7 150
11 7 200
12 6 050
12 6 410
12 6 411

(cylinder bank 5 to 8)

Read fault memory and make a documentary record.

Open drain plug on radiator. Open drain plug for coolant on right side of engine block. Drain and dispose of coolant.

Installation:

Replace sealing ring for drain plug on engine block.

Tightening torque, 11 11 5AZ. Refer to 11 11 ENGINE BLOCK .

Top up coolant. Vent cooling system and check for leaks. Refer to 17 00 005 DRAINING AND ADDING COOLANT (S62) .

Remove intake filter housing upper section with air-mass flow sensor.

Remove intake air manifold. Refer to 11 61 050 Removing and installing intake air manifold (S62) .

Remove both cylinder head covers. Refer to 11 12 004 REMOVING AND INSTALLING/SEALING BOTH CYLINDER HEAD COVERS (S62) .

Remove all spark plugs.

Remove water hose between radiator and thermostat housing.

Remove fan clutch with fan impeller and fan cowl. Refer to 11 52 020 Removing and installing or replacing fan clutch (S62) and 17 11 031 REPLACING FAN COWL (S62) .

Remove oil lines (1) from cylinder head on cylinder banks 1 to 4 and 5 to 8.

NOTE: The oil lines (1) of cylinder banks 1 to 4 and 5 to 8 are different.

Fig 1: Removing Oil Lines

Courtesy of BMW OF NORTH AMERICA, INC.

Removal:

Removal of the VANOS adjustment unit and the camshafts is described separately from installation. The assembly sequence for removal and installation is different.

When the engine is switched off, VANOS moves the camshafts to a position which is advantageous to engine starting.

CAUTION: Before the VANOS adjustment unit is removed, the camshafts on cylinder bank 5 to 8 must be rotated back to their initial position.

Rotate crankshaft in direction of rotation as far as ignition TDC position of cylinder 1. Secure vibration damper in position with special tool 11 2 300.

Fig 2: Securing Vibration Damper

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Remove oil line from VANOS adjustment unit.

Fig 3: Removing Oil Line From Vanos Adjustment Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Fit special tool 11 7 130 to VANOS adjustment unit.

Connect compressed air (2 to 8 bar).

Fig 4: Connecting Compressed Air

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Disconnect plug connection for solenoid valves on cylinder bank 5 to 8.

Connect special tool 12 6 050 in conjunction with special tool 12 6 411 (from special tool kit 12 6 410) to solenoid valves on cylinder bank 5 to 8. Connect special tool 12 6 411 to correct terminals on car battery.

Fig 5: Connecting Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.

Alternately press toggle switch buttons 4 and 3 several times on special tool 12 6 050.

CAUTION: Do not damage the cylinder head.
If necessary, machine open-end wrench accordingly.

Fig 6: Fitting Open-End Wrench

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Press and hold down toggle switch button 4 on special tool 12 6 050.

At same time, rotate inlet camshaft at hexagon drive against direction of rotation as far as it will go.

Fig 7: Rotating Inlet Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Spline teeth in VANOS gear are engaged; and inlet camshaft cannot be rotated further.

Cylinder bank 5 to 8:

Alternately press toggle switch buttons 2 and 1 several times on special tool 12 6 050.

Fig 8: Identifying Toggle Switch Buttons

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Press and hold down toggle switch button 2 on special tool 12 6 050.

At same time, rotate exhaust camshaft at hexagon drive against direction of rotation as far as it will go.

Fig 9: Rotating Exhaust Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Spline teeth in VANOS gear are engaged; and exhaust camshaft cannot be rotated further.

Remove special tool 11 2 300. Rotate crankshaft in direction of rotation a further revolution up to overlap TDC position.

Cylinder bank 5 to 8:

Slacken six accessible bolts two turns.

Fig 10: Locating Six Accessible Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

Crank engine at central bolt in direction of rotation until 1st cylinder is at TDC firing position. Secure vibration damper in position with special tool 11 2 300.

Fig 11: Securing Vibration Damper

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Slacken remaining six bolts two turns.

Fig 12: Locating Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

NOTE: The camshafts have an opening. The 1st bearing caps have a locating bore.

Align camshaft opening to locating bore in bearing cap and secure in position with special tool 11 7 120.

Fig 13: Securing Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Release screws on VANOS adjustment unit.

Fig 14: Releasing Screws On Vanos Adjustment Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Carefully lever out VANOS adjustment unit at "intended" openings with a screwdriver on left and right.

Fig 15: Levering Out VANOS Adjustment Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Pull off VANOS adjustment unit.

Fig 16: Pulling Off VANOS Adjustment Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Remove special tool 11 2 300.

Fig 17: Removing Special Tool

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CAUTION: No piston must be in the TDC position when the camshafts are removed.

When the VANOS adjustment unit is removed, the chain wheels of the inlet and exhaust camshafts are not non-positively connected to the camshafts. Camshafts on cylinder bank 5 to 8 do not rotate.

Crank engine at central bolt against direction of rotation to 45° before TDC position.

Fig 18: Cranking Engine

Courtesy of BMW OF NORTH AMERICA, INC.

Remove left timing case cover (cylinder bank 5 to 8). Refer to 11 14 080 Removing and installing timing case cover, top left (S62) .

Remove chain tensioning piston. Refer to 11 31 090 REMOVING AND INSTALLING/REPLACING PISTON FOR CHAIN TENSIONER (S62) .

Cylinder bank 5 to 8 (inlet side):

Remove slackened bolts. Take off spacer ring (1).

Fig 19: Removing Spacer Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8 (inlet side):

NOTE: The spline hub (1) accommodates a plate spring and a supporting ring.
Take care: the supporting ring can easily fall out when removed.

Remove spline hub (1) with plate spring and supporting ring.

Fig 20: Removing Spline Hub

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8 (inlet side):

Detach inlet chain wheel (3) from centering sleeve.

Keep inlet chain wheel (3) and chain tensioned.

Feed out inlet chain wheel (3).

Secure chain against slipping down.

Fig 21: Detaching Inlet Chain Wheel

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8 (exhaust side):

NOTE: The spline hub (1) accommodates a plate spring and a supporting ring.
Take care: the supporting ring can easily fall out when removed.

Remove slackened screws on exhaust side.

Remove spacer ring (2) and spline hub (1) with plate spring and supporting ring.

Fig 22: Identifying Spacer Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8 (exhaust side):

Take off spacer ring (2).

Fig 23: Removing Spacer Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Compress secondary chain tensioner at top and lock with special tool 11 7 140.

Fig 24: Compressing Secondary Chain Tensioner

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Remove special tool 11 7 120.

Fig 25: Removing Special Tools

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Cylinder bank 5 to 8:

NOTE: Grip camshafts at hexagon head.
Release bolts on centering sleeves (1).

Fig 26: Releasing Bolts On Centering Sleeves

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Remove centering sleeves (1) on exhaust and inlet sides.

Fig 27: Removing Centering Sleeves

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Remove secondary chain drive with chain (1) and sprocket wheels (2).

Fig 28: Removing Secondary Chain Drive

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Withdraw toothed sleeves (2) from exhaust and inlet camshafts.

Fig 29: Withdrawing Toothed Sleeves

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Rotate exhaust camshaft at hexagon head until exhaust cam on cylinder 6 is facing upwards.

Rotate inlet camshaft at hexagon head until inlet cam on cylinder 8 is facing upwards.

NOTE: The camshafts are now in the removal position.

Fig 30: Rotating Camshafts

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Release exhaust and inlet camshaft bearing caps in 1/2 turn increments evenly from outside to inside.

Fig 31: Releasing Exhaust And Inlet Camshaft Bearing Caps

Courtesy of BMW OF NORTH AMERICA, INC.

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

NOTE: Bearing caps are secured with adapter sleeves. Remove bearing caps and place to one side in orderly fashion. Lift out camshaft.

If necessary, remove signal ring.

CAUTION: Do not damage camshafts. Use protective vise jaws.

Grip camshaft at hexagon head in a vise and release banjo bolt (1).

Fig 32: Removing Banjo Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Installation of camshafts and the VANOS adjustment unit is described separately from removal. The assembly sequence for installation and removal is different.

NOTE: Signal rings of inlet and exhaust camshafts are different.

Signal ring of inlet camshaft with one dowel pin
Signal ring of exhaust camshaft with two dowel pins

Fig 33: Identifying Signal Rings
Courtesy of BMW OF NORTH AMERICA, INC.

Fit signal rings, align bores (1 and 2).

Install banjo bolt (1) and tighten down.

Fig 34: Installing Banjo Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque, 50 Nm.

NOTE: Clean dirty parts.

Oil following parts before installation:

Camshaft contact face in cylinder head
Bucket tappets
Camshafts
Bearing caps

Cylinder bank 5 to 8:

Insert exhaust and inlet camshafts.

Rotate exhaust camshaft until exhaust cam on cylinder 6 is facing upwards.

Rotate inlet camshaft until inlet cam on cylinder 8 is facing upwards.

Fig 35: Inserting Exhaust And Inlet Camshafts

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Bearing caps are secured with adapter sleeves (1).

Fig 36: Identifying Adapter Sleeves

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fit bearing covers.

Exhaust camshaft bearing caps are marked A1 to A5 from inlet side.

Inlet camshaft bearing caps are marked E1 to E5 from exhaust side.

Fig 37: Identifying Camshaft Bearing Caps Marks

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Tighten down camshaft bearing caps in 1/2 turn increments evenly from inside to outside.

Fig 38: Tightening Down Camshaft Bearing Caps

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque, 10 Nm.

Cylinder bank 5 to 8:

Rotate exhaust camshaft at hexagon head until exhaust cam on cylinder 5 is facing upwards.

Rotate inlet camshaft at hexagon head until inlet cam on cylinder 7 is facing upwards.

Fig 39: Rotating Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Coat all sliding surfaces on VANOS gear with engine oil as antiseize agent.

Cylinder bank 5 to 8:

Install toothed sleeves (2) in exhaust and inlet camshafts.

Align openings in toothed sleeves (2) to tapped holes in camshafts.

Fig 40: Installing Toothed Sleeves

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

NOTE: The position of the tapped hole on the sprocket wheels is important for bolt accessibility. It has no influence on the function.

Place chain (1) on sprocket wheels (2) so that tapped holes on sprocket wheels are situated vertically.

Fig 41: Placing Chain On Sprocket Wheels

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Place chain (1) and sprocket wheels (2) on camshafts.

Align chain (1) and sprocket wheels (2) so that stud (3) on bearing cap is flush with a tapped hole (3) on sprocket wheel.

Fig 42: Aligning Chain And Sprocket Wheels

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Push on centering sleeves (1) for exhaust and inlet sides, align bore holes to tapped holes in camshafts.

Fig 43: Pushing On Centering Sleeves For Exhaust And Inlet Sides

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Insert bolts for centering sleeves (1).

Fig 44: Installing Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Grip camshafts at hexagon head.
Tighten down bolts on centering sleeves (1).

Cylinder bank 5 to 8:

NOTE: The camshafts have an opening. The 1st bearing caps have a locating bore.

Align camshafts so that camshaft openings line up with locating bore in bearing cap.

Secure camshafts with special tool 11 7 120.

Fig 45: Securing Camshafts

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Compress secondary chain tensioner at top and remove special tool 11 7 140.

Fig 46: Compressing Secondary Chain Tensioner

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8 (exhaust side):

Fit spacer ring (2).

Align bores in spacer ring (2) to threads in sprocket wheel.

Fig 47: Aligning Bores In Spacer Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8 (exhaust side):

Version up to 9/2001

CAUTION: Risk of mixing up parts.

NOTE: Plate spring (2) and supporting ring (3) form a set and may only be fitted together.

Thickness of plate spring (2) = 0.85 mm.

Thickness of supporting ring (3) = 3.55 mm.

Fig 48: Identifying Plate Spring & Supporting Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8 (exhaust side):

Version from 9/2001

CAUTION: Risk of mixing up parts.

NOTE: Plate spring (4) and supporting ring (5) form a set and may only be fitted together.

Thickness of plate spring (4) = 1.25 mm.

Thickness of supporting ring (5) = 3.20 mm.

Fig 49: Identifying Plate Spring And Supporting Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Plate spring (4) and supporting ring (5) may also be fitted in engine before 9/2001.

Cylinder bank 5 to 8 (exhaust side):

Version up to 9/2001

CAUTION: Observe installation direction of plate spring (2).

Fig 50: Identifying Direction Of Plate Spring

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: The small support diameter of the plate spring (2) points in the direction of the supporting ring (3). Supporting ring is supported with retaining lugs in spline hub (1).

Insert plate spring (2) and supporting ring (3) in spline hub (1).

Cylinder bank 5 to 8 (exhaust side):

Version from 9/2001

CAUTION: Observe installation direction of plate spring (4).

Fig 51: Identifying Direction Of Plate Spring

Courtesy of BMW OF NORTH AMERICA, INC.

The small support diameter of the plate spring (4) points in the direction of the spline hub (1). Supporting ring is supported with retaining lugs in spline hub (1).

Insert plate spring (4) and supporting ring (5) in spline hub (1).

Cylinder bank 5 to 8 (exhaust side):

NOTE: Fit spline hub (1) with plate spring and supporting ring so that bore hole (2) is positioned as shown in illustration.

Fig 52: Fitting Spline Hub With Plate Spring

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8 (exhaust side):

Fit spacer ring (2).

Fig 53: Fitting Spacer Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Insert all bolts and initially tighten without play.

Then slacken bolts again until spline hub (1) can be moved with fingers.

Cylinder bank 5 to 8 (inlet side):

Keep timing chain tensioned and feed on inlet chain wheel (3).

NOTE: The position of the bores in the inlet chain wheel (3) can be freely selected; they do not have to line up with the threads yet.

Position inlet chain wheel (3) on centering sleeve. Do not insert "any" screws into inlet chain wheel (3) yet.

Fig 54: Positioning Inlet Chain Wheel On Centering Sleeve

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: If a chain tensioning piston is reused, the oil chamber in the chain tensioner must be drained.

Install chain tensioning piston. Refer to 11 31 090 Removing and installing/replacing piston for chain tensioner (S62) .

"No" screws are inserted in inlet sprocket wheel yet. Inlet sprocket wheel must not slip off centering sleeve.

Rotate crankshaft from 45° before TDC position in direction of rotation up to TDC firing position. Secure vibration damper in position with special tool 11 2 300.

Fig 55: Securing Vibration Damper

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8 (inlet side):

Check position of inlet chain wheel (3) to threads.

In event of large deviation (thread not visible):

Detach inlet sprocket wheel (3) from centering sleeve; in so doing, keep timing chain tensioned, realign inlet sprocket wheel (3) and refit.

In event of small deviation:

Position special tool 11 7 150 at toothed sleeve on exhaust side. Align secondary chain drive to bores of inlet chain wheel (3).

Fig 56: Aligning Secondary Chain Drive

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8 (inlet side):

Version up to 9/2001

CAUTION: Risk of mixing up parts.

NOTE: Plate spring (2) and supporting ring (3) form a set and may only be fitted together.

Thickness of plate spring (2) = 0.85 mm.

Thickness of supporting ring (3) = 3.55 mm.

Cylinder bank 5 to 8 (inlet side):

Fig 57: Identifying Plate Spring And Supporting Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Version from 9/2001

CAUTION: Risk of mixing up parts.

NOTE: Plate spring (4) and supporting ring (5) form a set and may only be fitted together.

Thickness of plate spring (4) = 1.25 mm.

Thickness of supporting ring (5) = 3.20 mm.

Plate spring (4) and supporting ring (5) may also be fitted in engine before 9/2001.

Fig 58: Identifying Plate Spring And Supporting Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8 (inlet side):

Version up to 9/2001

CAUTION: Observe installation direction of plate spring (2).

NOTE: The small support diameter of the plate spring (2) points in the direction of the supporting ring (3). Supporting ring is supported with retaining lugs in spline hub (1).

Insert plate spring (2) and supporting ring (3) in spline hub (1).

Fig 59: Installing Direction Of Plate Spring

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8 (inlet side):

Version from 9/2001

CAUTION: Observe installation direction of plate spring (4).

The small support diameter of the plate spring (4) points in the direction of the spline hub (1). Supporting ring is supported with retaining lugs in spline hub (1).

Insert plate spring (4) and supporting ring (5) in spline hub (1).

Fig 60: Installing Direction Of Plate Spring

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8 (inlet side):

Install spline hub (1) with plate spring and supporting ring.

Fig 61: Installing Spline Hub

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Align spline hub (1) so that oil pump is positioned as shown in picture.

Cylinder bank 5 to 8 (inlet side):

Fit spacer ring (2).

Fig 62: Fitting Spacer Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Insert all bolts and initially tighten without play.

Then slacken bolts again until spline hub (1) can be moved with fingers.

Install left timing case cover. Refer to 11 14 080 Removing and installing timing case cover, top left (S62) .

CAUTION: Risk of mixing up parts.

The VANOS adjustment units of cylinder banks 1 to 4 and 5 to 8 are different.

Cylinder bank 1 to 4
Cylinder bank 5 to 8

Fig 63: Identifying VANOS Adjustment Units

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Install VANOS adjustment unit so that solenoid valve cables are at bottom.

Oil is sprayed when splined shafts are pressed back. Cover bore (1) with a cloth.

Fig 64: Pressing Splined Shafts

Courtesy of BMW OF NORTH AMERICA, INC.

Connect special tool 12 6 050 in conjunction with special tool 12 6 411 (from special tool kit 12 6 410) to solenoid valves of VANOS adjustment unit. Connect special tool 12 6 411 to correct terminals on car battery.

Press buttons 2 and 4 on special tool 12 6 050. Solenoid valves are actuated.

Press splined shafts by hand up to stop into initial position.

Replace O-rings (1 and 2) on VANOS adjustment unit.

Coat O-rings (1) with oil as antiseize agent.

CAUTION: O-rings (2) fall out very easily, secure with grease if necessary.

Fig 65: Replacing O-Rings

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Turn spline hubs (1) of inlet and exhaust camshafts to right limit position.

Fig 66: Turning Spline Hubs

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Attach VANOS adjustment unit.

Fig 67: Attaching VANOS Adjustment Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

CAUTION: Make sure both VANOS splined shafts remain in initial position during installation.

Rotate splined shafts of inlet and exhaust sides until spur toothing is engaged.

Push VANOS adjustment unit with splined shaft into VANOS gear until helical cut splines (2) are positioned shortly before meshing with spline hub (1).

Fig 68: Pushing VANOS Adjustment Unit Into VANOS Gear

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8 (exhaust side):

If the helical cut splines cannot be pushed into the spline hub (1):

Place special tool 11 7 150 on bore in spline hub (1). Rotate spline hub (1) against direction of rotation until splined shaft (2) is positioned with spline hub (1) exactly "tooth-to-tooth gap".

Fig 69: Rotating Spline Hub

Courtesy of BMW OF NORTH AMERICA, INC.

CAUTION: The "first" matching tooth must engage.

Cylinder bank 5 to 8 (inlet side):

Place special tool 11 7 150 on bore in spline hub (1). Rotate spline hub (1) against direction of rotation until splined shaft (2) is positioned with spline hub (1) exactly "tooth-to-tooth gap".

Fig 70: Rotating Spline Hub

Courtesy of BMW OF NORTH AMERICA, INC.

CAUTION: The "first" matching tooth must engage.

Cylinder bank 5 to 8 (inlet side):

Align radial piston pump to driver on spline hub.

NOTE: Picture shows a schematic representation.

Fig 71: Aligning Radial Piston Pump To Driver

Courtesy of BMW OF NORTH AMERICA, INC.

Push on VANOS adjustment unit only until O-rings of VANOS adjustment unit rest against timing case cover.

CAUTION: If this position is not reached, realign position of radial piston pump to driver.

Insert one bolt each on left and right and initially tighten without play. The bolts serve to locate the VANOS adjustment unit in position. Do "not" tighten down screws yet. VANOS adjustment unit must "not" rest against timing case cover.

Fig 72: Locating Bolts Of Vanos Adjustment Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

NOTE: Use special tool 11 7 200 to tighten down bolts on VANOS gear.

Tighten down six accessible screws (three on exhaust side and three on inlet side) on VANOS gear to 10 Nm.

Fig 73: Tightening Accessible Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Then slacken all six screws again by a 1/4 turn.

Cylinder bank 5 to 8:

Install all bolts. Alternately tighten down bolts in 1/2 turn increments carefully and evenly until VANOS adjustment unit rests against timing case cover.

Tighten down all bolts.

Fig 74: Installing All Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

Remove special tool 11 2 300.

Fig 75: Removing Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.

CAUTION: The camshafts remain locked in position with special tool 11 7 120.
Carefully rotate engine at central screw against direction of rotation until there is noticeable resistance and spline hubs are at the stop.

NOTE: This procedure creates compensation for play. Only with this compensation for play is the timing diagram correctly set.

Then crank engine again in direction of rotation until 1st cylinder is at TDC firing position.

Secure vibration damper in position with special tool 11 2 300.

Fig 76: Securing Vibration Damper

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

NOTE: To tighten down screws on VANOS gear: Use special tool 11 7 200.

Tighten down six accessible screws (three on exhaust side and three on inlet side) on VANOS gear to 10 Nm.

Fig 77: Tightening Down Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Remove special tool 11 7 120.

Fig 78: Removing Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.

Remove special tool 11 2 300. Crank engine at central bolt in direction of rotation a further revolution up to overlap TDC position.

Cylinder bank 5 to 8:

NOTE: To tighten down screws on VANOS gear: Use special tool 11 7 200.

Tighten down remaining six bolts on VANOS gear to 10 Nm.

Fig 79: Tightening Down Remaining Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

Rotate crankshaft in direction of rotation as far as ignition TDC position of cylinder 1. Secure vibration damper in position with special tool 11 2 300.

Fig 80: Securing Vibration Damper

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 1 to 4:

Remove oil line from VANOS adjustment unit.

Fig 81: Removing Oil Line From Vanos Adjustment Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 1 to 4:

Fit special tool 11 7 130 to VANOS adjustment unit.

Connect compressed air (2 to 8 bar).

Fig 82: Connecting Compressed Air

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 1 to 4:

Disconnect plug connection for solenoid valves on cylinder bank 1 to 4.

Connect special tool 12 6 050 in conjunction with special tool 12 6 411 (from special tool kit 12 6 410) to solenoid valves on cylinder bank 1 to 4. Connect special tool 12 6 411 to correct terminals on car battery.

Fig 83: Connecting Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.

Alternately press toggle switch buttons 1 and 2 several times on special tool 12 6 050.

CAUTION: Do not damage the cylinder head.
If necessary, machine open-end wrench accordingly.

Fig 84: Fitting Open-End Wrench

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 1 to 4:

Press and hold down toggle switch button 1 on special tool 12 6 050.

At same time, rotate inlet camshaft at hexagon drive against direction of rotation as far as it will go.

Fig 85: Rotating Inlet Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Spline teeth in VANOS gear are engaged; and inlet camshaft cannot be rotated further.

Cylinder bank 1 to 4:

Alternately press toggle switch buttons 3 and 4 several times on special tool 12 6 050.

Fig 86: Pressing Toggle Switch Buttons

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 1 to 4:

Press and hold down toggle switch button 3 on special tool 12 6 050.

At same time, rotate exhaust camshaft at hexagon drive against direction of rotation as far as it will go.

Fig 87: Rotating Exhaust Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Spline teeth in VANOS gear are engaged; and exhaust camshaft cannot be rotated further.

Cylinder bank 1 to 4:

Check camshaft adjustment.

NOTE: Groove on 1st bearing cap is a little wider than groove in camshaft.
Groove of inlet and exhaust camshafts must be inside groove on 1st bearing cap.

Fig 88: View Of Groove

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 5 to 8:

Check camshaft adjustment.

Fig 89: View Of Groove

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Groove on 1st bearing cap is a little wider than groove in camshaft.
Groove of inlet and exhaust camshafts must be inside groove on 1st bearing cap.

If necessary, adjust camshaft timing. Refer to 11 31 505 ADJUSTING CAMSHAFT TIMING (S62) .

Cylinder bank 5 to 8:

Replace sealing rings.

Fit oil line to VANOS adjustment unit.

Fig 90: Fitting Oil Line

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque, 13 Nm.

Cylinder bank 1 to 4:

Remove special tool 11 7 130 from VANOS adjustment unit.

Replace sealing rings.

Attach oil line to VANOS adjustment unit.

Fig 91: Attaching Oil Line

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque, 13 Nm.

Assemble engine.

CAUTION: There is air in the VANOS system once it is opened.
In the first few seconds after startup this results in a clearly discernible "rattling noise".
This rattling noise does "not" indicate incorrect assembly.
The rattling noise will disappear as soon as the oil pressure has built up and the system has vented.