Disassemble cylinder head

Checking the position of the intake camshaft (cylinder head removed)

Check

Check position of the intake camshaft on the respective cylinders.

Courtesy of BMW OF NORTH AMERICA, INC.

Result

» Cam (1) of the intake camshaft runs on the intermediate lever.

Measure

Continue to crank the intake camshaft on the mounting flats.

Remove torsion springs

Torsion spring

Courtesy of BMW OF NORTH AMERICA, INC.

CAUTION: Spring preload.
Injury hazard!

The use of the specified special tool (tool) is mandatory.
Carry out the described steps properly.

NOTE: TECHNICAL INFORMATION
Wear safety goggles.
For disassembly and installation of the torsion spring, special tool 2 359 088 is used. Due to technical modifications in the torsion spring, special tool 5 A0B 120 is mounted on the existing special tool 2 359 088 .
Information on modification can be found in the additional information.

NOTE: TECHNICAL INFORMATION

Alternative to the new special tool 5 A24 F30 , the already known special tool SWZ: 2 359 088 can be used in modified form.

Information on modification can be found in the additional information.
The modified special tool is upward compatible.

NOTE: TECHNICAL INFORMATION
When replacing one or more torsion springs:
When removing the torsion spring, it is imperative to note the part number of the torsion spring.
A mixed installation of torsion springs is only permitted in combination with the appropriate intermediate lever.
For further information on possible combinations, see the applicable BMW parts catalogue.

Prepare set of special tools 2 359 088 for removing the torsion spring with an S-shaped contour:

Number	Description
1	Clamping lever
2	Mount for the clamping lever (for a torsion spring with an S-shaped contour)

Courtesy of BMW OF NORTH AMERICA, INC.

Prepare set of special tools 5 A24 F30 or, alternatively, modified special tool 2 359 088 for removing the torsion spring with an L/S-shaped contour:

Number	Description
1	Clamping lever
2	Mount for the clamping lever (for a torsion spring with an L/S-shaped contour)

Courtesy of BMW OF NORTH AMERICA, INC.

Version with a torsion spring with an S-shaped contour with special tool 5 A24 F30 or modified special tool 2 359 088 :
Move shaped part (1) to the contact surface in the arrow direction .

Hand-tighten wing screw (2) .

Courtesy of BMW OF NORTH AMERICA, INC.
Version with a torsion spring with an L-shaped contour with special tool 5 A24 F30 or modified special tool 2 359 088 :
Move shaped part (1) to the contact surface in the arrow direction.

Hand-tighten wing screw (2) .

Courtesy of BMW OF NORTH AMERICA, INC.
Open clamping lever (1) and position it on torsion spring (2) .

Courtesy of BMW OF NORTH AMERICA, INC.

Ensure that clamping lever (1) lies flat on the cylinder head in area (2) .
Carefully close clamping lever (1) until snap-in hooks (3) engage audibly.

Courtesy of BMW OF NORTH AMERICA, INC.

Check
Check if clamping lever (1) is positioned correctly on the torsion spring in the marked areas.

Courtesy of BMW OF NORTH AMERICA, INC.

Result

» Clamping lever (1) is not positioned correctly on the torsion spring.

Measure

Carefully release clamping lever (1) and repeat the process.

Clamp mount (1) into vice (2) .
Position clamping lever (3) with the preloaded torsion spring (5) in mount (1) in the arrow direction.

Snap-in hooks (4) of clamping lever (3) are used to release clamping lever (3) .

Torsion spring (5) is thus released.

Courtesy of BMW OF NORTH AMERICA, INC.

Version with a torsion spring with an S-shaped contour and the special tool 2 359 088 .
Carefully unlock clamping lever (1) of special tool 2 359 088 in the corresponding mount.

Ensure that torsion spring (2) lies correctly in the lateral guides (arrows) and mark of clamping lever (1) during releasing.

Place torsion spring (2) neatly in special tool 0 495 105 (11 4 480) .

Courtesy of BMW OF NORTH AMERICA, INC.
Version with a torsion spring with an S-shaped contour and special tool 5 A24 F30 or modified special tool 2 359 088 :
Carefully unlock clamping lever (1) of special tool 5 A24 F30 or, alternatively, of modified special tool 2 359 088 in the corresponding mount.

Ensure that torsion spring (2) lies correctly in the lateral guides (arrows) and mark of clamping lever (1) during releasing.

Place torsion spring (2) neatly in special tool 0 495 105 (11 4 480) .

Courtesy of BMW OF NORTH AMERICA, INC.
Version with a torsion spring with an L-shaped contour and special tool 5 A24 F30 or modified special tool 2 359 088 :
Carefully unlock clamping lever (1) of special tool 5 A24 F30 or of modified special tool 2 359 088 in the corresponding mount.

Ensure that torsion spring (2) lies correctly in the lateral guides (arrows) and mark of clamping lever (1) during releasing.

Place torsion spring (2) neatly in special tool 0 495 105 (11 4 480) .

Courtesy of BMW OF NORTH AMERICA, INC.

Repeat the steps for the remaining torsion springs.

Removing all gates

Loosen screw (1) .
Remove the gate (2) and place it arranged in order into 0 495 105 (11 4 480) .
Repeat the step for all the gates.

Courtesy of BMW OF NORTH AMERICA, INC.

Removing all intermediate levers

Intermediate lever

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: TECHNICAL INFORMATION
When replacing one or more intermediate levers:
When removing the intermediate lever, it is imperative to note the part number of the intermediate lever.
A mixed installation of intermediate levers is only permitted in combination with the appropriate torsion spring.
For further information on possible combinations, see the applicable BMW parts catalogue.

NOTE: The description is provided only at one component. The procedure is the same for all other components.

Remove the intermediate lever (1) and arrange it in the special tool 0 495 105 (11 4 480) in order.

Courtesy of BMW OF NORTH AMERICA, INC.

Remove intake camshaft

Make sure that the exhaust camshaft bearing cap is placed in the correct position in the special tool 0 495 105 (11 4 480) .

NOTE: The intake sprocket bearing caps are legibly labeled from the intake side with E1, E2, E3, E4 and E.

NOTE: Intake camshaft bearing cap E is a thrust bearing.

Courtesy of BMW OF NORTH AMERICA, INC.

Loosen all screws on the intake camshaft bearing caps in sequence from (10) to (1) .

Fig 1: Intake Camshaft Bearing Caps Screws Loosening Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

Take off intake camshaft bearing caps (E1) , (E2) , (E3) , (E4) and (E) and place them in order in the special tool 0 495 105 (11 4 480) .

Courtesy of BMW OF NORTH AMERICA, INC.

Remove the intake shaft (1) in the direction of the arrow.

Courtesy of BMW OF NORTH AMERICA, INC.

Remove the servomotor for the eccentric shaft (cylinder head removed)

NOTE: RISK OF DAMAGE
Electrostatic discharge.
Damage to or destruction of electrical components.

Leave the electrical components in their original packaging until they are being installed. Only use the original packaging for returning the product. Always package removed components straight away.
Read and comply with user information on using the associated special tool 12 7 060.
Only tap the housings of electrical components. Do not tap pins or multi-pin connectors directly.
Wear electrically conductive clothing and antistatic shoes (with ESD symbol).
For additional information see: NOTES ON ESD (ELECTROSTATIC DISCHARGE) PROTECTION .

Loosen screws (1) .
Slow adjust the servomotor (3) for the eccentric shaft with a standard Allen wrench (2) with 4 mm in the direction of arrow to minimum lift.
This releases the eccentric shaft.

Do not screw out the eccentric shaft beyond the end stop.
Feed out and remove the servomotor (3) for the eccentric shaft.

Courtesy of BMW OF NORTH AMERICA, INC.

Remove eccentric shaft

Release screws (1) and set down the bearing cap neatly in special tool 0 495 105 (11 4 480) .
Release screws (2) and set down the bearing bracket neatly in special tool 0 495 105 (11 4 480) .
For an engine that has been in use, make sure all bearing brackets are reinstalled in the same position.

Courtesy of BMW OF NORTH AMERICA, INC.

Remove the eccentric shaft (1) in the direction of the arrow.

Courtesy of BMW OF NORTH AMERICA, INC.

Remove exhaust camshaft.

Subsequently ensure that the exhaust camshaft bearing cap is placed in 0 495 105 (11 4 480) in the special tool.

NOTE: The exhaust camshaft bearing caps are legibly labeled from the intake side and marked with A1, A2 and A.

NOTE: Exhaust camshaft bearing cap A is a thrust bearing.

Courtesy of BMW OF NORTH AMERICA, INC.

Loosen all screws on the exhaust camshaft bearing cap in sequence from (10) to (1) in half turn.

Fig 2: Exhaust Camshaft Bearing Caps Screws Loosening Sequence
Courtesy of BMW OF NORTH AMERICA, INC.
Drop the exhaust camshaft bearing cap (A1) , (A2) and (A) and place in order in the special tool 0 495 105 (11 4 480) .

Courtesy of BMW OF NORTH AMERICA, INC.

Remove the roller tappet (1) .

Remove the high pressure pump bracket (2) .

Courtesy of BMW OF NORTH AMERICA, INC.

Remove the exhaust camshaft (1) in the direction of the arrow.

Courtesy of BMW OF NORTH AMERICA, INC.

Remove all roller cam followers

Detach and remove the roller cam followers (1) on the intake side from hydraulic valve clearance compensating elements (arrows).
Place all the roller cam followers (1) in order in the special tool 0 495 105 (11 4 480) .

Courtesy of BMW OF NORTH AMERICA, INC.

Detach and remove the roller cam followers (1) on the exhaust side from hydraulic valve clearance compensating elements (arrows).
Place all the roller cam followers (1) in order in the special tool 0 495 105 (11 4 480) .

Courtesy of BMW OF NORTH AMERICA, INC.

Removing all hydraulic valve clearance compensating elements

Remove all hydraulic valve clearance compensating elements (1) up and out in the arrow direction.
Lay the hydraulic valve clearance compensating elements (1) , together with the rocker arms, orderly in the special tool 0 495 105 (11 4 480) .

Courtesy of BMW OF NORTH AMERICA, INC.

Remove all valve springs

Mount and bolt special tool 0 494 366 (11 9 001) on special tool 0 495 187 (00 2 300) .

Mount and bolt the cylinder head to the special tool 0 494 366 (11 9 001) .

Courtesy of BMW OF NORTH AMERICA, INC.

Prepare the special tools 0 494 371 (11 9 006) , 0 494 372 (11 9 007) and 0 494 373 (11 9 008) as shown.

Courtesy of BMW OF NORTH AMERICA, INC.

Make sure that the special tools 0 494 373 (11 9 008) are positioned as shown in the next operation.

Courtesy of BMW OF NORTH AMERICA, INC.

Turn round special tool 0 494 371 (11 9 006) and insert as shown.
Slide the special tool 0 494 370 (11 9 005) in the direction of the arrow.

Courtesy of BMW OF NORTH AMERICA, INC.

Lock special tool 0 494 370 (11 9 005) in the direction of the arrow.

Rotate the cylinder head with the special tool 0 494 362 (11 9 000) by 180° into the installation position.

Courtesy of BMW OF NORTH AMERICA, INC.

Align special tool 0 494 374 (11 9 009) in direction of valve axis.

CAUTION: Component with preload.
Injury hazard!

Reduce preload as far as possible before disassembly. Relieve component.

Courtesy of BMW OF NORTH AMERICA, INC.

Press down the valve spring on the upper spring cup with the special tools 0 494 374 (11 9 009) and 0 495 028 (11 9 017) .
Keep the valve spring pressed down with the special tool 0 495 028 (11 9 017) .
Remove the valve shims (1) with a magnet from the valve (2) .
Carefully relieve the valve spring.

Courtesy of BMW OF NORTH AMERICA, INC.

Set the spring cup (1) and the valve spring (2) down in the special tool 0 495 105 (11 4 480) in order.

Courtesy of BMW OF NORTH AMERICA, INC.

Remove valve stem seals

NOTE: RISK OF DAMAGE
Contaminant or foreign body.
Contamination can result in malfunctions, loss of function or leaks.

Adhere to the utmost cleanliness.
Protect components from contamination e.g. by covering.
Close off line connections with seal plugs.

NOTE: The description is provided only at one component. The procedure is the same for all other components.

Remove the valve stem seal (1) in the arrow direction using the special tool 0 490 796 (11 1 480) .

Courtesy of BMW OF NORTH AMERICA, INC.

Remove all valves

NOTE: RISK OF DAMAGE
Contaminant or foreign body.
Contamination can result in malfunctions, loss of function or leaks.

Adhere to the utmost cleanliness.
Protect components from contamination e.g. by covering.
Close off line connections with seal plugs.

B38:

Turn the special tool 0 494 366 (11 9 001) on the crank by 180°.

Courtesy of BMW OF NORTH AMERICA, INC.

B46B48:

Turn the special tool 0 494 366 (11 9 001) (2) on the crank (1) by 180° in arrow direction.

Courtesy of BMW OF NORTH AMERICA, INC.

B58:

Turn the special tool 0 494 366 (11 9 001) (2) on the crank (1) by 180° in arrow direction.

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock the special tools 0 494 370 (11 9 005) in arrow direction.

Courtesy of BMW OF NORTH AMERICA, INC.

B38 :

Remove the special tools 0 494 373 (11 9 008) if necessary.

Courtesy of BMW OF NORTH AMERICA, INC.

B46B48:

Remove the special tools 0 494 373 (11 9 008) if necessary.

Courtesy of BMW OF NORTH AMERICA, INC.

B58:

Feed out and remove the special tools 0 494 371 (11 9 006) , 0 494 372 (11 9 007) and 0 494 373 (11 9 008) in arrow direction.

Courtesy of BMW OF NORTH AMERICA, INC.

Slide the valve stem (1) in arrow direction in the cylinder head.

Courtesy of BMW OF NORTH AMERICA, INC.

Remove the valve (1) and position in special tool 0 495 105 (11 4 480) in order.

Courtesy of BMW OF NORTH AMERICA, INC.