11 31 574 Adjusting Camshaft Timing On Right Side (N63O1)

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Special Tools Required:

IMPORTANT: Release Central Bolts On Adjuster Only with Special Tool 2 249 117 .
Risk of Damage To Timing Drive.

(Cylinder Bank 1 To 4)

Necessary Preliminary Tasks:

Remove RIGHT-HAND GEAR CASE COVER .
CHECKING CAMSHAFT TIMING ON RIGHT SIDE .

Get Set of Special Tools 2 249 117 Ready for Securing Camshafts.

Fig 1: Identifying Set of Special Tools 2 249 117 for Securing Camshafts

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Position Special Tool 2 249 137 On Intake Camshaft.

Position Exhaust Camshaft with Special Tool 2 249 140 and Attach To Special Tool 2 249 137 .

Fig 2: Positioning Special Tools On Exhaust Camshaft and Checking Timing Adjustment

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Release Central Bolts (1 and 2) of Intake and Exhaust Camshaft Adjusters.

Installation Note:

Replace Central Bolts After Releasing.

Fig 3: Identifying Central Bolts of Intake and Exhaust Camshaft Adjusters

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IMPORTANT: Check Whether Head of Central Bolt (1) Is Greased (See Arrow In Illustration).

Installation Note:

Coat Contact Surface of New Central Bolt (1) with Copper Paste.

Fig 4: Checking Central Bolt Head To See If Required Grease Is Present

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Insert Central Bolts (1 and 2).

IMPORTANT: Loosen The Central Bolts (1 and 2) By Maximum 40°.

Fig 5: Identifying Central Bolts

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Remove Special Tool 11 9 190 .

Fig 6: Turning Engine At Central Bolt and Positioning Special Tool 11 9 190 In Gear Case Cover

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IMPORTANT: Crank Engine Back At Central Bolt Through 8°. Position Engine with Special Tool 11 9 190 In Front of Special Tool 11 8 570 As Shown In Graphic.

Fig 7: Positioning Engine Using Special Tool 11 9 190 In Front of Special Tool 11 8 570

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Installation Note:

The Tightening Sequence Begins with the Exhaust Camshaft.

Insert Central Bolt (1) of Exhaust Camshaft with Special Tool 11 4 350 .

Joining Torque 5 Nm.

Fig 8: Inserting Central Bolt of Exhaust Camshaft Using Special Tool 11 4 350

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Insert Central Bolt (1) of Intake Camshaft with Special Tool 11 4 350 .

Joining Torque 5 Nm .

Fig 9: Inserting Central Bolt of Intake Camshaft Using Special Tool 11 4 350

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Remove Special Tool 11 9 190 .

Fig 10: Positioning Engine Using Special Tool 11 9 190 In Front of Special Tool 11 8 570

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Turn The Engine At The Central Bolt Further Until The Special Tool 11 9 190 Can Be Positioned In The Gear Case Cover.

The Engine Is Now In The 150° Crankshaft Position Before The TDC Firing Position of Cylinder 1.

Fig 11: Turning Engine At Central Bolt and Positioning Special Tool 11 9 190 In Gear Case Cover

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Installation Note:

Tighten Central Bolts Beginning with the Exhaust Camshaft.

Insert Central Bolt (1) of Exhaust Camshaft with Torque.

Tightening torque of 30 Nm

Fig 12: Inserting Central Bolt of Exhaust Camshaft

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Insert Central Bolt (1) of Intake Camshaft with Torque.

Tightening torque of 30 Nm

Fig 13: Inserting Central Bolt of Intake Camshaft

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Insert Central Bolt (1) of Exhaust Camshaft with Special Tool 00 9 120 .

TORSION ANGLE ADJUSTMENT90°

Fig 14: Inserting Central Bolt of Exhaust Camshaft Using Special Tool 00 9 120

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Insert Central Bolt (1) of Intake Camshaft with Special Tool 00 9 120 .

TORSION ANGLE ADJUSTMENT90°

Remove Special Tool 2 249 117 .

Fig 15: Inserting Central Bolt of Intake Camshaft Using Special Tool 00 9 120

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Remove Special Tools 11 9 190 and 11 8 570 .

Crank Engine At Central Bolt Twice In Direction of Engine Rotation Until Engine Returns To 150° Before Cylinder No. 1 Firing TDC Position.

Secure Vibration Damper with Special Tools 11 8 570 and 11 9 190 In The 150° TDC Firing Position, Cylinder 1 .

Fig 16: Turning Engine At Central Bolt and Positioning Special Tool 11 9 190 In Gear Case Cover

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Fit Special Tool 2 249 137 On Intake Camshaft and Check Timing Adjustment.

NOTE: Timing Is Correctly Adjusted When Special Tool 2 249 137 Rests Without A Gap On Cylinder Head.

Fig 17: Fitting Special Tool 2 249 137 On Intake Camshaft and Checking Timing Adjustment

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Place Special Tool 2 249 140 On The Exhaust Camshaft and Check Timing Adjustment.

NOTE: Timing Is Correctly Adjusted When Special Tool 2 249 140 Rests Without A Gap On Special Tool 2 249 137 .

Fig 18: Positioning Special Tools On Exhaust Camshaft and Checking Timing Adjustment

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Remove All Special Tools.

Assemble Engine.