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Home >> Mini >> 2010 >> Cooper S, 2D Hatchback, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 4158 (Camshafts, Rocker Arms, Engine VALVETRAIN, Engine Lubrication System. Engine Oil Cooler - Repair - F12) >> Variable Camshaft Timing >> 11 36 047 Removing and installing/renewing inlet and exhaust adjustment units on left side (N63)

11 36 047 Removing and installing/renewing inlet and exhaust adjustment units on left side (N63)

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Special tools required: 

IMPORTANT: When the engine is shut down, the inlet and exhaust camshaft adjuster is normally locked in its initial position.
The situation may arise in some individual cases where this initial position is not reached and the camshaft can continue to be rotated in the adjustment range of the camshaft adjuster.
Where central bolts are not greased at the bolt contact points up to engine number 20024295  , the camshaft adjuster must be renewed due to safety reasons.
The central bolts is greased from engine number 20024296  .

(cylinder bank 5 to 8) 

Necessary preliminary work: 

To release central bolts, use special tool 11 9 890 or grip at hexagon head of camshaft.

Fig 1: Releasing Central Bolts Using Special Tool 11 9 890
G10043210Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: If special tool 11 9 890 can not be fitted, it is necessary when releasing the central bolt to grip the hexagon head of the respective camshafts.

Release central bolts (1 and 2) of intake and exhaust camshaft adjusters.

Installation note: 

Replace central bolts after releasing.

Fig 2: Identifying Central Bolts Of Intake And Exhaust Camshaft Adjusters
G10043211Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Check whether head of central bolt (1) is greased (see arrow in illustration).
If no grease can be seen on the bolt head of central bolt (1), the intake and exhaust camshaft adjuster must be renewed due to safety reasons.

Installation note: 

Coat contact face of central bolt (1) with copper paste.

Fig 3: Coating Contact Face Of New Central Bolt With Copper Paste
G10043212Courtesy of BMW OF NORTH AMERICA, INC.

Release hexagon socket screw.

Release special tool 11 9 900 at knurled screws and remove.

Fig 4: Mounting Special Tool 11 9 900 And Pre-Loading Hex Socket Screw
G10043213Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Remove upper tensioning rail (2).

NOTE: Shown without special tools for purposes of clarity.
Fig 5: Identifying Upper Tensioning Rail And Screws
G10043214Courtesy of BMW OF NORTH AMERICA, INC.

Remove central bolt (2) of inlet adjustment unit.

Installation note: 

Replace central bolts after releasing.

Fig 6: Identifying Inlet Adjustment Unit Central Bolt
G10043215Courtesy of BMW OF NORTH AMERICA, INC.

Detach inlet adjustment unit (1) in direction of arrow from inlet camshaft.

Fig 7: Detaching Inlet Adjustment Unit
G10043216Courtesy of BMW OF NORTH AMERICA, INC.

Feed out inlet adjustment unit (2) from timing chain (1).

Lift out inlet adjustment unit (2).

Fig 8: Identifying Inlet Adjustment Unit And Timing Chain
G10043217Courtesy of BMW OF NORTH AMERICA, INC.

Remove central bolt (1) of exhaust adjustment unit.

Installation note: 

Replace central bolts after releasing.

Fig 9: Identifying Exhaust Adjustment Unit Central Bolt
G10043218Courtesy of BMW OF NORTH AMERICA, INC.

Detach exhaust adjustment unit (1) in direction of arrow from exhaust camshaft.

Fig 10: Detaching Exhaust Adjustment Unit From Exhaust Camshaft
G10043219Courtesy of BMW OF NORTH AMERICA, INC.

Feed out exhaust adjustment unit (2) from timing chain (1).

Lift out exhaust adjustment unit (2).

Fig 11: Identifying Exhaust Adjustment Unit And Timing Chain
G10043220Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Danger of mix-up:
Intake and exhaust camshaft adjusters are different.
Mixing up the inlet and exhaust adjustment units will cause damage to the engine.
  1. Intake camshaft adjuster (1) is marked IN 
  2. Exhaust camshaft adjuster (2) is marked OUT 
    Fig 12: Identifying Intake And Exhaust Adjuster With Mark
    G10043221Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: 

Coat contact face of central bolt (1) with copper paste.

Fig 13: Coating Contact Face Of New Central Bolt With Copper Paste
G10043222Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Position of adjustment units in relation to timing chain can be freely selected.

Feed adjuster into timing chain and position on camshafts.

Insert central bolts (1 and 2) on adjustment units without gaps.

Release central bolts (1 and 2) by 90°  .

Fig 14: Identifying Central Bolts On Adjustment Units
G10043223Courtesy of BMW OF NORTH AMERICA, INC.

Fit sliding rail (2) and secure with screws (1).

Tightening torque: 11 31 4AZ .

Fig 15: Identifying Sliding Rail With Screws
G10043224Courtesy of BMW OF NORTH AMERICA, INC.

Get set of special tools 11 9 890 ready for securing camshafts.

Fig 16: Identifying Set Of Special Tools
G10043225Courtesy of BMW OF NORTH AMERICA, INC.

Place special tool 11 9 893 on exhaust camshaft.

Fig 17: Checking Timing Adjustment - Exhaust Camshaft
G10043226Courtesy of BMW OF NORTH AMERICA, INC.

Fit special tool 11 9 893 on intake camshaft.

Fig 18: Checking Timing Adjustment - Intake Camshaft
G10043227Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: 

Align exhaust and intake camshafts so that special tools 11 9 893 lie on the cylinder head without any gap.

Screw special tool 11 9 894 into cylinder head.

Fig 19: Screwing Special Tool 11 9 894 Into Cylinder Head
G10043228Courtesy of BMW OF NORTH AMERICA, INC.

Press special tool 11 9 892 down with special tool 11 9 891 .

Fig 20: Pressing Special Tool 11 9 892
G10043229Courtesy of BMW OF NORTH AMERICA, INC.

Screw in special tool 11 9 900 .

Pretension timing chain with special tool 11 9 900 .

Preload hexagon socket screw with special tool 00 9 250, see 00 9 460 to 0.6 Nm  .

Fig 21: Mounting Special Tool 11 9 900 And Pre-Loading Hex Socket Screw
G10043230Courtesy of BMW OF NORTH AMERICA, INC.

Check special tools 11 9 190 for correct seating.

Fig 22: Securing Vibration Damper At 150° Before Cylinder No. 1 Firing TDC Position 1
G10043231Courtesy of BMW OF NORTH AMERICA, INC.

Tighten down central screw (1 and 2) of the adjustment units with special tool 00 9 120 .

Tightening torque 11 36 1AZ .

Fig 23: Identifying Intake And Exhaust Camshaft Adjusters Central Screws
G10043232Courtesy of BMW OF NORTH AMERICA, INC.

Remove special tools 11 9 190 and 11 8 570 .

Crank engine at central bolt twice in direction of rotation until engine is in the 150° firing TDC position cylinder 1  again.

Mount special tool 11 8 570 on vibration damper with a bolt.

Secure special tool 11 9 190 in 150° firing TDC position cylinder 1  .

Fig 24: Securing Vibration Damper At 150° Before Cylinder No. 1 Firing TDC Position 1
G10043233Courtesy of BMW OF NORTH AMERICA, INC.

Check timing. See 11 31 070 CHECKING CAMSHAFT TIMING ON LEFT SIDE (N63)  and 11 31 071 CHECKING CAMSHAFT TIMING ON RIGHT SIDE (N63)  again.

Remove all special tools.

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