11 12 517

Note:

The cylinder heads can also be removed and installed inside the vehicle. To improve access, it is advantageous to remove the engine.

Remove intake air manifold.

Remove engine wiring harness with cable channels from engine.

Remove left exhaust manifold.

Suspend special tool 11 0 250 from front and rear lugs for raising engine and raise engine.

Removing and installing both cylinder heads on engine BMW S62

Remove guide tube for oil dipstick.

Remove bearing pedestal for A/C compressor.

Fit special tool 11 0 081 .

Removing and installing both cylinder heads on engine BMW S62

Remove engine support on cylinder bank 5 to 8.

Removing and installing both cylinder heads on engine BMW S62

Installation:

Replace sealing rings, ensure that seals are correctly located and, if necessary, secure with grease.

Fit special tool 11 0 082 .

Install engine in special tool 00 1 450 .

Snap locking pin (1) into place.

Close locking detent (2) on right and left and screw down.

Remove both cylinder head covers.

Remove all spark plugs.

Remove complete fuel line holder.

Remove throttle actuator.

Caution!

The work step Removing and installing throttle actuator describes important instructions on installing the pull rods and throttles.

Remove idling speed control valve. Remove molded hoses from supplementary air distributor to tank venting valve and throttles.

Remove knock sensor cable guide from return line (cylinder bank 5 to 8).

Disconnect vacuum hose for pressure regulator.

Disconnect vacuum hoses to solenoid-operated valve.

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

Remove coolant thermostat.Installation:

Replace O-rings (1).

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.

Note:

Joint removal and installation of the cylinder heads on cylinder banks 1 to 4 and 5 to 8 requires a step-by-step procedure.

The work steps alternate between the cylinder heads on cylinder banks 1 to 4 and 5 to 8.

Removal

Removal of cylinder heads is described separately from installation.

Cylinder bank 1 to 4:

Remove bracket (1) for cable channel.

Cylinder bank 1 to 4:

Note:

Cylinder head bolts on cylinders 4 and 8 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.

Cylinder bank 1 to 4:

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

Remove signal rings.

Cylinder bank 5 to 8:

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.

Cylinder bank 5 to 8:

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

Remove signal rings.

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 both cylinder banks 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 .

Cylinder bank 1 to 4:

Remove oil line from VANOS adjustment unit.

Cylinder bank 1 to 4:

Fit special tool 11 7 130 to VANOS adjustment unit.

Connect compressed air (2 to 8 bar).

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 .

Caution!

Do not damage the cylinder head.

If necessary, machine open-end wrench accordingly.

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.

Cylinder bank 1 to 4:

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

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.

Cylinder bank 5 to 8:

Remove oil line from VANOS adjustment unit.

Cylinder bank 5 to 8:

Fit special tool 11 7 130 to VANOS adjustment unit.

Connect compressed air (2 to 8 bar).

Cylinder bank 5 to 8:

Unclip plug connection for solenoid valves on cylinder bank 5 to 8 from bracket.

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.

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

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.

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 .

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.

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.

Cylinder bank 5 to 8:

Slacken six accessible bolts two turns.

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 .

Cylinder bank 1 to 4:

Slacken remaining six bolts two turns.

Cylinder bank 5 to 8:

Slacken remaining six bolts two turns.

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 .

Cylinder bank 5 to 8:

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

Cylinder bank 1 to 4:

Release screws on VANOS adjustment unit.

Cylinder bank 1 to 4:

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

Cylinder bank 1 to 4:

Pull off VANOS adjustment unit.

Cylinder bank 5 to 8:

Release screws on VANOS adjustment unit.

Cylinder bank 5 to 8:

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

Cylinder bank 5 to 8:

Pull off VANOS adjustment unit.

Remove special tool 11 2 300 .

Caution!

No piston must be in the TDC position when the cylinder heads 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 do not rotate.

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

Remove chain tensioning piston.

Remove right timing case cover on cylinder bank 1 to 4.

Remove left timing case cover on cylinder bank 5 to 8.

Cylinder bank 1 to 4 (inlet side):

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

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.

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.

Cylinder bank 5 to 8 (inlet side):

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

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.

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.

Cylinder bank 5 to 8:

Detach sliding rail from cylinder head.

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 on both cylinder heads in sequence 10 to 1.

Lift off cylinder heads.

Installation

Installation of cylinder heads is described separately from removal.

Clean sealing faces of cylinder heads 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).

Check dowel sleeves for damage and correct installation position.

Install new cylinder head seals.

Install cylinder heads. 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.

Use special tool 00 9 120 for torsion angle tightening.

Tighten down cylinder head bolts on both cylinder heads in sequence 1 to 10.

Tightening torque, 11 12 8AZ:

Type Thread Tightening specification Torque
7AZ Cylinder head bolts
M70 / S70 / M73 M10 Replace screws

Do not wash off coating

Jointing torque 30 Nm
Torque angle 60 °
Torque angle 60 °
8AZ Cylinder head bolts
M60 / M62 / S62 M10 Replace screws

Do not wash off coating

Jointing torque 30 Nm
Torque angle 80 °
Torque angle 80 °
N62 / N62TU / N73 M10 Replace screws

Do not wash off coating

Jointing torque 30 Nm
Torque angle 90 °
Torque angle 90 °

Cylinder bank 5 to 8:

Insert the screw and tighten down the slide rail.

Pull up timing chain on both sides and keep tensioned.

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 .

Note:

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

Cylinder bank 5 to 8 (inlet side):

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.

Feed timing chain onto inlet chain wheel (3).

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

Cylinder bank 1 to 4 (inlet side):

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

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

Press tensioning rail against chain and keep tensioned.

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 chain wheel (3) from centering sleeve, realign chain 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).

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):

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.

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).

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).

Cylinder bank 5 to 8 (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.

Cylinder bank 5 to 8 (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.

Cylinder bank 1 to 4 (inlet side):

Press tensioning rail against chain and keep tensioned. Check position of inlet chain wheel (3) to threads.

In event of large deviation (thread not visible):

Detach inlet chain wheel (3) from centering sleeve, realign chain 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).

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.

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.

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).

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).

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.

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.

Install right timing case cover.

Note:

If the chain tensioning piston is reused, you must drain the oil chamber in the chain tensioner.

Install chain tensioning piston.

Install left timing case cover.

Caution!

Risk of mixing up parts.

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

  1. Cylinder bank 1 to 4
  2. Cylinder bank 5 to 8

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.

Connect special tool 12 6 050 in conjunction with special tool 12 6 411 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.

Cylinder bank 1 to 4:

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.

Cylinder bank 1 to 4:

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

Cylinder bank 1 to 4:

Attach VANOS adjustment unit.

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).

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 ”toothto-tooth gap”.

Caution!

The ”first” matching tooth must engage.

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 ”toothto-tooth gap”.

Caution!

The ”first” matching tooth must engage.

Cylinder bank 1 to 4 (inlet side):

Align radial piston pump to driver on spline hub.

Note:

Picture shows a schematic representation.

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.

Cylinder bank 1 to 4:

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.

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

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.

Cylinder bank 5 to 8:

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

Connect special tool 12 6 050 in conjunction with special tool 12 6 411 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.

Cylinder bank 5 to 8:

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

Cylinder bank 5 to 8:

Attach VANOS adjustment unit.

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).

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 ”toothto-tooth gap”.

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 ”toothto-tooth gap”.

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.

Cylinder bank 5 to 8:

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.

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.

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.

Remove special tool 11 2 300 .

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 .

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.

Cylinder bank 1 to 4:

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.

Cylinder bank 1 to 4:

Remove special tool 11 7 120 .

Cylinder bank 5 to 8:

Remove special tool 11 7 120 .

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

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.

Cylinder bank 1 to 4:

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.

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 .

Cylinder bank 5 to 8:Note:

Signal rings of inlet and exhaust camshafts are different.

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

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

Install banjo bolt (1).

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

Tightening torque 11 31 13AZ:

13AZ Signal disk to camshaft
S62 / S54 M16 x 1.5 50 Nm

Cylinder bank 1 to 4:Note:

Signal rings of inlet and exhaust camshafts are different.

  1. Signal ring of inlet camshaft with one dowel pin
  2. Signal ring of exhaust camshaft with two dowel pins Fit signal rings, align bores (1 and 2).

Cylinder bank 1 to 4:

Install banjo bolt (1).

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

Tightening torque 11 31 13AZ.

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 .

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.

Cylinder bank 5 to 8:

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.

If necessary, adjust camshaft timing.

Removing and installing both cylinder heads on engine BMW S62

Remove special tool 11 2 300 .

Removing and installing both cylinder heads on engine BMW S62

Cylinder bank 5 to 8:

Replace sealing rings.

Fit oil line to VANOS adjustment unit.

Tightening torque 11 36 9AZ:

9AZ Pressure line to VANOS adjustment unit
S62 / S54 M10 x 1 13 Nm

Removing and installing both cylinder heads on engine BMW S62

Cylinder bank 1 to 4:

Replace sealing rings.

Attach oil line to VANOS adjustment unit.

Tightening torque 11 36 9AZ.

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.