Removing and installing/replacing inlet and exhaust adjustment units on right side (S63T2) (X5 M)

Special tools required: 

• 2 249 117
• 2 249 162
• 2 249 137
• 2 249 140
• 00 9 250
• 00 9 460
• 11 9 190
• 11 8 570
• 11 4 350
• 00 9 120

(cylinder bank 1 to 4) 

Necessary preliminary tasks: 

• Read fault memory and make a documentary record 
• Remove RIGHT CYLINDER HEAD COVER .
• Remove RIGHT GEAR CASE COVER .
• Check TIMING .

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

Installation note: 

Replace central bolts after releasing.

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Installation note: 

Coat contact surface of new central bolt (1) with 4.4  copper paste.

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Release screw (1).

Remove special tool 2 249 162.

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Release screws (1).

Remove upper tensioning rail (2).

Graphic N63.

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Remove central bolt (1) of exhaust adjustment unit.

Installation note: 

Replace central bolts after releasing.

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

Graphic N63.

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

Lift out exhaust adjustment unit (2).

Graphic N63.

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Remove central bolt (2) of inlet adjustment unit.

Installation note: 

Replace central bolts after releasing.

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Pull off inlet adjustment unit (1) in direction of arrow from intake camshaft.

Graphic N63.

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

Lift out inlet adjustment unit (2).

Graphic N63.

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1. Intake adjuster is marked with {EIN}  .
2. Exhaust camshaft adjuster is marked with {AUS}  .

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Installation note: 

Coat contact surface of new central bolt (1) with 4.4  copper paste.

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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 45°  .

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Position top slide rail (2) and secure with screws (1).

Tightening torque: 11 31 4AZ .

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Position special tool 2 249 137 on intake camshaft and secure with screws (1).

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Position special tool 2 249 140 on special tool 2 249 140 and secure with screws (1).

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Screw in special tool 2 249 162.

Pretension timing chain with special tool 2 249 162.

Pretension timing chain with special tool 00 9 250 or 00 9 460 to 0.6 Nm  .

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Remove special tool 11 9 190.

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Position engine with special tool 11 9 190 in front of special tool 11 8 570 as illustrated in the graphic.

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Join central bolt (1) of intake camshaft with special tool 11 4 350.

Joining torque 5 Nm  .

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Join central bolt (1) of exhaust camshaft with special tool 11 4 350.

Joining torque 5 Nm  .

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Remove special tool 11 9 190.

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Turn engine at central bolt further until special tool 11 9 190 gear case cover can be positioned.

The engine is now 150° before TDC firing position cylinder 1.

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Installation note: 

Tighten central bolts beginning with the intake camshaft.

Insert central bolt (1) of intake camshaft with torque.

Tightening torque of 30 Nm 

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Insert central bolt (1) of exhaust camshaft with torque.

Tightening torque of 30 Nm 

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Secure central bolt (1) of intake camshaft with special tool 00 9 120.

TORSION ANGLE ADJUSTMENT120°  .

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Secure central bolt (1) of exhaust camshaft with special tool 00 9 120.

TORSION ANGLE ADJUSTMENT120° 

Remove special tool 2 249 117.

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Check TIMING  again.

Remove all special tools.