LEMON Manuals: Even more car manuals for everyone
Home >> BMW >> 2012 >> X5 M >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine - Repair >> Variable Camshaft Timing >> 11 36 048 Removing and installing/replacing inlet and exhaust adjustment units on right side (S63) >> Cylinder bank 1 to 4 >> Necessary preliminary tasks

Necessary preliminary tasks

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)
G06178601
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 inlet and exhaust adjustment units.

Installation: 

Replace central bolts after releasing.

Fig 2: Identifying Intake And Exhaust Camshaft Adjusters Central Bolts
G06178589
IMPORTANT: Check whether head of central bolt (1) is greased (see arrow).
If no grease can be seen on the bolt head of central bolt (1), the inlet and exhaust adjustment unit must be replaced for safety reasons.

Installation: 

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

Fig 3: Locating Contact Surface Of Central Bolt
G06178590

Release hexagon socket screw.

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

Fig 4: Releasing Special Tool (11 9 900) At Knurled Screws
G06178562

Release screws (1).

Remove upper tensioning rail (2).

Fig 5: Identifying Upper Tensioning Rail And Screws
G06178677

Remove central bolt (1) of exhaust adjustment unit.

Installation: 

Replace central bolts after releasing.

Fig 6: Identifying Exhaust Adjustment Unit Central Bolt
G06178692

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

Fig 7: Detaching Exhaust Adjustment Unit
G06178693

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

Lift out exhaust adjustment unit (2).

Fig 8: Identifying Exhaust Adjustment Unit And Timing Chain
G06178694

Remove central bolt (1) of inlet adjustment unit.

Installation: 

Replace central bolts after releasing.

Fig 9: Identifying Inlet Adjustment Unit Central Bolt
G06178695

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

Fig 10: Detaching Inlet Adjustment Unit
G06178696

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

Lift out inlet adjustment unit (2).

Fig 11: Identifying Inlet Adjustment Unit And Timing Chain
G06178673
IMPORTANT: Danger of mix-up:

Intake and exhaust adjustment units are different.

Mixing up the inlet and exhaust adjustment units will cause damage to the engine.

  1. Inlet adjustment unit (1) is marked with ON 
  2. Exhaust adjustment unit (2) is marked with OFF 
    Fig 12: Identifying Intake And Exhaust Camshaft Adjuster Markings (EIN And AUS)
    G06178674

Installation: 

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

Fig 13: Locating Contact Surface Of Central Bolt
G06178590
NOTE: Position of adjustment units in relation to timing chain can be freely selected.

Feed adjustment unit 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 Adjustment Unit Central Bolts
G06178664

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

Tightening torque: 11 31 4AZ .

Fig 15: Identifying Sliding Rail And Screws
G06178677

Get special tool 11 9 890 ready for securing camshafts.

Fig 16: Identifying Special Tools
G08526700

Place special tool 11 9 893 on exhaust camshaft.

Fig 17: Checking Exhaust Camshaft Timing Adjustment Using Special Tool (11 9 893)
G06178576

Fit special tool 11 9 893 on intake camshaft.

Installation: 

Align exhaust and inlet camshafts in such a way that special tools 11 9 893 rest without a gap on the cylinder head.

Fig 18: Checking Intake Camshaft Timing Adjustment Using Special Tool (11 9 893)
G06178577

Screw special tool 11 9 894 into cylinder head.

Fig 19: Screwing Special Tool (11 9 894) Into Cylinder Head
G06178600

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

Fig 20: Screwing Special Tool (11 9 894) Into Cylinder Head
G08526728

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 to 0.6 Nm  .

Fig 21: Mounting Special Tool (11 9 900) At Position Of Chain Tensioner
G06178562

Check special tools 11 9 190 for correct seating.

Fig 22: Securing Vibration Damper Using Special Tools
G06178565

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 Adjustment Units Central Screw
G06178589

Remove special tools 11 9 190 and 11 8 570 .

Crank engine at central bolt twice in direction of rotation until engine returns to 150° before cylinder no. 1 firing TDC position  .

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

Secure special tool 11 9 190 at 150° before cylinder no. 1 firing TDC position  .

Fig 24: Securing Vibration Damper Using Special Tools
G06178565

Check timing  . See 11 31 070 CHECKING CAMSHAFT TIMING ON LEFT SIDE (S63)  or 11 31 071 CHECKING CAMSHAFT TIMING ON RIGHT SIDE (S63)  again.

Remove all special tools.

scientia non olet · About LEMON Manuals