11 12 106 Removing and installing right cylinder head (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:

00 9 120
11 2 250
11 2 300
11 7 120
11 7 130
11 7 150
11 7 200
12 6 050
12 6 410
12 6 411

(cylinder bank 1 to 4)

Remove right exhaust manifold.

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

Installation:

Replace sealing rings for drain plugs on engine block.

Tightening torque, 25 Nm.

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

Remove right intake filter housing with air-mass flow sensor. Refer to 13 71 020 REMOVING AND INSTALLING RIGHT INTAKE FILTER HOUSING (S62) .

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

Detach engine wiring harness section from both cylinder heads and lay to one side.

The procedure is described in the work step Replacing wiring harness section for motor. Refer to 12 51 001 REPLACING WIRING HARNESS SECTION FOR ENGINE (S62) .

Disconnect fuel line with injector valves on cylinder bank 1 to 4 and lay to one side.

Remove idle speed control valve. Refer to 13 41 500 REPLACING IDLE SPEED CONTROL VALVE (S62) .

Remove molded hoses from supplementary air distributor to tank venting valve and throttle (cylinder bank 1 to 4).

Disconnect vacuum hoses to solenoid-operated valve.

Remove hose for brake booster from throttle body, cylinder (4).

Remove heating feed line from engine block and from both return lines on cylinder heads.

Unhook pull rod on throttle actuator.

CAUTION: The work step Removing and installing throttle actuator describes important instructions on installing the pull rods and throttles. Refer to 12 72 010 REMOVING AND INSTALLING/REPLACING THROTTLE ACTUATOR .

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

Remove all spark plugs.

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 coolant thermostat. Refer to 11 53 000 Removing and installing/replacing coolant thermostat (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

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Removal of cylinder head is described separately from installation.

Remove bracket (1) for cable channel.

NOTE: Illustration with engine removed.

Fig 2: Removing Bracket For Cable Channel

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NOTE: Cylinder head bolts on cylinder 4 are only accessible after signal rings have been removed.

CAUTION: Risk of damage to pulse generators (2).
Remove pulse generator (2) of exhaust and inlet camshafts or release screws (1) with a long socket.

NOTE: For purposes of picture clarity, the lug for raising the engine is not shown.

Fig 3: Removing Pulse Generator Or Screws

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

Remove signal rings.

Fig 4: Removing Signal Rings

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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 1 to 4 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 5: Securing Vibration Damper

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Cylinder bank 1 to 4:

Remove oil line from VANOS adjustment unit.

Fig 6: Removing Oil Line From VANOS Adjustment Unit

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Cylinder bank 1 to 4:

Fit special tool 11 7 130 to VANOS adjustment unit.

Connect compressed air (2 to 8 bar).

Fig 7: Connecting Compressed Air

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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.

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

Fig 8: View Of Special Tool

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

Fig 9: Fitting Open-End Wrench

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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.

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

Fig 10: Rotating Inlet Camshaft

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Cylinder bank 1 to 4:

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

Fig 11: Pressing Toggle Switch Buttons

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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.

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

Fig 12: Rotating Exhaust Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

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

Cylinder bank 1 to 4:

Slacken six accessible bolts two turns.

Fig 13: Locating Bolts

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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 14: Securing Vibration Damper

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Cylinder bank 1 to 4:

Slacken remaining six bolts two turns.

Fig 15: Locating Remaining Bolts

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Cylinder bank 1 to 4:

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 16: Aligning Camshaft Opening To Locating Bore

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Cylinder bank 1 to 4:

Release screws on VANOS adjustment unit.

Fig 17: Releasing Screws On VANOS Adjustment Unit

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Cylinder bank 1 to 4:

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

Fig 18: Locating VANOS Adjustment Unit Openings

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Cylinder bank 1 to 4:

Pull off VANOS adjustment unit.

Fig 19: Removing VANOS Adjustment Unit

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Remove special tool 11 2 300.

Fig 20: Removing Special Tool

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CAUTION: No piston must be in the TDC position when the cylinder head is 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 1 to 4 do not rotate.

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

Fig 21: Cranking Engine At Central Bolt

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

Remove right timing case cover (cylinder bank 1 to 4). Refer to 11 14 085 Removing and installing timing case cover, top right (S62) .

Cylinder bank 1 to 4 (inlet side):

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

Fig 22: Removing Spacer Ring

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Cylinder bank 1 to 4 (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 23: Removing Spline Hub

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Cylinder bank 1 to 4 (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 24: Feeding Out Inlet Chain Wheel

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: To release cylinder head bolts: Use special tool 11 2 250.
At narrow points, use a socket with 3/8" drive and a short extension.

Release cylinder head bolts in sequence 10 to 1.

Fig 25: Identifying Cylinder Head Bolt Removal Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

Lift off cylinder head.

Installation

Installation of cylinder head is described separately from removal.

Clean sealing faces of cylinder head and engine block, if necessary, remove gasket debris using a wooden scraper.

Make sure no gasket debris drops into the oil and coolant ducts. Threaded bores in engine block must be free of dirt and oil (risk of cracking).

Coat joint between engine block and timing case cover with Drei Bond 1209 (refer to BMW Parts Service ).

Fig 26: Coating Joint

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Check dowel sleeves for damage and correct installation position.

Install new cylinder head seal.

Fig 27: Locating Dowel Sleeves

Courtesy of BMW OF NORTH AMERICA, INC.

Put the cylinder head on. Install new cylinder head bolts. Do not wash off screw coating.

NOTE: To tighten down cylinder head bolts: Use special tool 11 2 250.
At narrow points, use a socket with 3/8" drive and a short extension.
Use special tool 00 9 120 as a torsion angle bracket.

Fig 28: Tightening Cylinder Head Bolts

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Tighten down cylinder head bolts in sequence 1 to 10.

Tightening torque, refer to 11 12 8AZ 11 12 CYLINDER HEAD WITH COVER .

Fig 29: Right Cylinder Head Bolts Tightening/Loosening Sequence (S62)

Courtesy of BMW OF NORTH AMERICA, INC.

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

Cylinder bank 1 to 4 (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 30: Installing Inlet Chain Wheel

Courtesy of BMW OF NORTH AMERICA, INC.

CAUTION: Timing chain must not skip.

Press tensioning rail against chain and keep tensioned.

"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 31: Securing Vibration Damper

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Cylinder bank 1 to 4 (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 32: Aligning Secondary Chain Drive

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Cylinder bank 1 to 4 (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.

Fig 33: Identifying Supporting Ring & Plate Spring

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 1 to 4 (inlet 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.

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

Fig 34: Identifying Plate Spring And Supporting Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 1 to 4 (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 35: Inserting Plate Spring And Supporting Ring In Spline Hub

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 1 to 4 (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 36: Inserting Plate Spring And Supporting Ring In Spline Hub

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 1 to 4 (inlet side):

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

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

Fig 37: Aligning Spline Hub

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Cylinder bank 1 to 4 (inlet side):

Fit spacer ring (2).

Insert all bolts and initially tighten without play.

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

Fig 38: Fitting Spacer Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Install right timing case cover. Refer to 11 14 085 Removing and installing timing case cover, top right (S62) .

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) .

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 39: Identifying VANOS Adjustment Unit

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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 40: Actuating Solenoid Valves

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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 1 and 3 on special tool 12 6 050 simultaneously.

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 41: Replacing O-Rings On Vanos Adjustment Unit

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Cylinder bank 1 to 4:

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

Fig 42: Turning Spline Hubs

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Cylinder bank 1 to 4:

Attach VANOS adjustment unit.

Fig 43: Attaching VANOS Adjustment Unit

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Cylinder bank 1 to 4:

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 44: Pushing VANOS Adjustment Unit Into VANOS Gear

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 1 to 4 (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".

CAUTION: The "first" matching tooth must engage.

Fig 45: Rotating Spline Hub

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Cylinder bank 1 to 4 (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".

CAUTION: The "first" matching tooth must engage.

Fig 46: Rotating Spline Hub

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 1 to 4 (inlet side):

Align radial piston pump to driver on spline hub.

NOTE: Picture shows a schematic representation.

Fig 47: Aligning Radial Piston Pump To Driver On Spline Hub

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.

CAUTION: 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 48: Installing Vanos Adjustment Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 1 to 4:

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.

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

Fig 49: Tightening Screws

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Cylinder bank 1 to 4:

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 50: Tightening Down All Bolts

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Remove special tool 11 2 300.

Fig 51: Removing Special Tool

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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 positions with special tool 11 2 300.

Fig 52: Securing Vibration Damper

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Cylinder bank 1 to 4:

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 53: Tightening Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder bank 1 to 4:

Remove special tool 11 7 120.

Fig 54: Removing Special Tool

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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 1 to 4:

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

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

Fig 55: Tightening Remaining Bolts

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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 56: Securing Vibration Damper

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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 57: Identifying Signal Rings

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

Install banjo bolt (1).

Fig 58: Installing Banjo Bolt

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Grip camshaft at hexagon head and tighten down banjo bolt (1).

Tightening torque, 50 Nm.

Cylinder bank 5 to 8:

Remove oil line from VANOS adjustment unit.

Fig 59: 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 60: Connecting Compressed Air

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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 61: Connecting Special Tools

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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 62: 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 63: Rotating Inlet Camshaft At Hexagon Drive

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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 64: Pressing Toggle Switch Buttons

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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.

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

Fig 65: Rotating Exhaust Camshaft At Hexagon Drive

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Pull special tool 11 2 300 back until vibration damper is no longer secured in position.

Crank engine "twice" in direction of rotation until 1st cylinder is at TDC firing position.

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

Fig 66: Securing Vibration Damper

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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 67: Checking Camshaft Adjustment

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Cylinder bank 5 to 8:

Check camshaft adjustment.

Fig 68: Checking Camshaft Adjustment

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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.

Tightening torque, 13 Nm.

Fig 69: Adjusting Camshaft Timing

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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.

Tightening torque, 13 Nm.

Assemble engine.

Fig 70: Replacing Sealing Rings

Courtesy of BMW OF NORTH AMERICA, INC.

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.